Short answer: A legitimate HVAC quote should include 15 specific items: exact equipment make/model/efficiency, a Manual J load calculation, an itemized breakdown of new vs. reused components, ductwork assessment, permits and inspection, manufacturer warranty terms, labor warranty terms, warranty registration responsibility, payment terms and financing, project timeline, crew details and licensing, old equipment disposal, post-installation testing and walkthrough, a clear list of what is NOT included, the quote validity period, and the contractor's license number with proof of insurance. If any of these are missing, you do not have a real quote — you have a trap. Print this checklist, take it with you, and use it to compare every bid you receive.
Want to see a quote that includes all 15 items? Call (702) 567-0707 or request your free quote online.
Key Takeaways
- Most HVAC quotes are not comparable because they do not contain the same information. One contractor gives you a one-page price, another gives you a five-page breakdown, and a third gives you a verbal number over the phone. Without a standard checklist, you cannot make an apples-to-apples comparison — and some contractors count on that.
- A good HVAC quote is a binding document that protects both you and the contractor. It is not a sales tool. It is not a rough estimate. It should read like a contract because, once you sign it, it IS a contract. Every detail that is missing from the quote is a detail that can change after the work begins.
- The 15-point checklist in this article covers everything a legitimate quote must include — from equipment model numbers and efficiency ratings to warranty registration timelines, permit responsibilities, and explicit exclusions. If a contractor's quote is missing more than two of these items, that is a red flag.
- Real Las Vegas pricing ranges for 2026: central AC (3-ton) runs $6,325 to $9,775 installed, heat pumps (3-ton) run $7,500 to $12,650 installed, and furnaces (80k BTU) run $4,500 to $7,500 installed. NV Energy PowerShift rebates of $300 to $2,000 can reduce your net cost further. Any quote significantly below these ranges is either missing scope or cutting corners.
- A written quote protects you legally in ways a verbal estimate never can. Under Nevada Revised Statutes, home improvement contractors must provide written contracts for work over $1,000. If a contractor refuses to put everything in writing, they are either unaware of the law or deliberately avoiding accountability.
- The "cheapest" quote almost never means the lowest total cost. The lowest bid often excludes permits, uses mismatched components, skips ductwork modifications, or offers minimal warranty coverage. When you add back the items they left out, the "cheap" quote is often the most expensive option over the life of the system.
Why Most Homeowners Cannot Compare HVAC Quotes
I am the co-CEO of The Cooling Company, a Lennox Premier Dealer in Las Vegas. I have reviewed thousands of competitor quotes over the years — quotes that homeowners bring to us for a second opinion — and here is the uncomfortable truth: most HVAC quotes are deliberately designed to be incomparable.
That is not an accident. It is a strategy.
Contractor A gives you a one-line quote: "New 3-ton AC system, installed — $5,200." Contractor B gives you a detailed three-page proposal with model numbers, warranty terms, permit fees, and a project timeline totaling $8,400. Contractor C gives you a verbal price over the phone: "Probably around seven grand."
Which is the best deal? You have no idea. And neither do I — because Contractor A did not tell you what equipment, what warranty, whether permits are included, whether they are reusing your old line set, whether they assessed your ductwork, or what happens when something goes wrong. That $5,200 number is meaningless without context. It could be $5,200 for a quality installation with a few items excluded, or it could be $5,200 for a system that will cost you $15,000 over the next five years in repairs, energy waste, and premature replacement.
I am writing this article because I want you to be able to compare quotes fairly. Not because I think we will always be the cheapest option — we will not — but because when homeowners can see exactly what they are getting for their money, quality contractors win. The only companies that lose when customers are informed are the ones relying on confusion to close deals.
Here is the checklist I wish every homeowner had before they called anyone — including us.
The 15-Point HVAC Quote Checklist
Print this section. Take it with you to every in-home consultation. If a contractor's quote is missing any of these items, ask them to add it in writing before you sign. If they refuse, you have your answer.
1. Equipment: Exact Make, Model Number, SEER2/EER2 Rating, and Tonnage
This is the foundation. A legitimate quote specifies exactly what equipment will be installed — not "a Lennox" or "a 16 SEER system" but the actual model numbers for every major component: the outdoor condensing unit, the indoor evaporator coil or air handler, the furnace (if applicable), and the thermostat.
Why model numbers matter: two systems from the same manufacturer at the same SEER2 rating can differ by thousands of dollars depending on the technology inside them. A single-stage system and a variable-speed system might both be labeled "high efficiency," but they deliver dramatically different comfort, humidity control, noise levels, and long-term energy savings.
The quote should also specify the unit's tonnage (cooling capacity) and BTU rating (heating capacity). For cooling, a 3-ton system produces 36,000 BTU/hr. For heating, an 80,000 BTU furnace is common in Las Vegas homes. These numbers should match the results of a load calculation — not be chosen arbitrarily.
What to look for on the quote:
- Outdoor unit: manufacturer, model number, SEER2 and EER2 rating, tonnage
- Indoor unit: manufacturer, model number, type (air handler, furnace, coil)
- Thermostat: specific model and features (programmable, smart, communicating)
- Matched system confirmation: are all components rated to work together?
Red flag: The quote says "equivalent unit" or "or similar." This gives the contractor the flexibility to substitute a cheaper model after you have signed. Insist on locked model numbers.
2. Manual J Load Calculation
A Manual J load calculation determines the correct system size for your specific home — accounting for square footage, insulation quality, window size and orientation, ceiling height, number of occupants, duct configuration, and local climate data. In Las Vegas, where cooling loads are among the most extreme in the country, this calculation is not optional — it is essential.
Your quote should state one of two things: (a) a Manual J was performed and the recommended system size is based on its results, or (b) a Manual J will be performed before final equipment selection. Either way, the calculation should be documented and available for you to review.
What to look for: A reference to the Manual J report, the calculated cooling load in BTU/hr or tons, and an explanation of why the recommended size was chosen.
Red flag: The contractor sized the system by matching your old unit's tonnage or by using a square-footage rule of thumb ("500 square feet per ton"). Two identical 2,000-square-foot homes on the same street in Henderson can require different system sizes depending on west-facing windows, attic insulation, and roof color. If the contractor did not calculate, they are guessing — and an incorrectly sized system is one of the most expensive mistakes in HVAC. An oversized system short-cycles, wastes energy, and fails early. An undersized system runs nonstop and never reaches setpoint on the hottest days. Both outcomes cost you thousands. I wrote about this in depth in our 17 questions to ask before buying a new HVAC system.
3. New vs. Reused Components
A new HVAC system involves more than just the big-ticket items. There are supporting components that connect and support the system, and the quote must specify whether each one is new or being reused from your existing installation.
Components that should be addressed:
- Refrigerant line set: The copper tubing that connects the indoor and outdoor units. If the new system uses a different refrigerant (R-410A vs. the newer R-454B) or a different line size, the old line set cannot be reused. Even if the refrigerant matches, old line sets may have contamination from a failed compressor. The quote should state whether lines are new or reused, and the rationale.
- Electrical disconnect: The outdoor safety switch. If it is corroded, undersized for the new unit, or does not meet current code, it should be replaced.
- Thermostat: Is the existing thermostat compatible with the new system? A communicating variable-speed system requires a communicating thermostat. A basic thermostat paired with a premium system means you lose features you paid for.
- Condenser pad: The concrete or composite pad the outdoor unit sits on. If cracked, unlevel, or the wrong size, it needs replacement.
- Drain line and safety switch: The condensate drain line and overflow safety switch. Old, clogged, or improperly routed drains cause water damage.
Red flag: The quote makes no mention of these items. That means either the contractor has not assessed them, or they plan to reuse everything without telling you — and you will not discover the issue until installation day when they present you with "additional charges."
4. Ductwork Assessment
Your ductwork is the delivery system for conditioned air. A new HVAC system is only as effective as the ducts it pushes air through. If your ductwork is undersized, leaking, poorly insulated, or damaged, even the best equipment will underperform.
A good quote addresses ductwork in one of three ways:
- Ductwork inspected, no modifications needed — with a brief note on condition.
- Ductwork modifications required — with a specific scope: sealing, insulation, resizing specific runs, adding or relocating supply registers.
- Ductwork inspection to be performed before installation — with a note that additional costs may apply and an estimate of what those costs might be.
What to look for: A statement about current duct condition, any recommended or required modifications, and the cost of those modifications (included or itemized separately).
Red flag: No mention of ductwork at all. This is one of the most common omissions in cheap quotes. The contractor assumes your ducts are fine without inspecting them, then discovers problems on installation day. At that point, you either pay extra or accept a compromised installation. Read more about HVAC upgrades in older Las Vegas homes where ductwork issues are most common.
5. Permits and Inspection
Nevada law requires a building permit for HVAC installations. The permit ensures the work is inspected by the local building authority to verify it meets code requirements for safety, electrical, mechanical, and refrigerant handling. This is not optional — it is the law.
Your quote should explicitly state:
- Whether the permit fee is included in the quoted price
- Who pulls the permit (it should be the installing contractor)
- Whether the installation includes a post-installation inspection by the building department
Las Vegas permit context: In Clark County and the City of Las Vegas, the mechanical permit for an HVAC installation typically costs $150 to $350 depending on the scope. Some contractors exclude this to lower the quote price, then add it later — or worse, skip it entirely.
Red flag: "We do not pull permits for residential AC replacements." This is illegal. A contractor who does unpermitted work exposes you to code violations, insurance complications, and potential issues when you sell your home. The inspection exists to verify the work was done safely. Skipping it means no one checks the electrical connections, refrigerant charge, drainage, or structural support. I consider this one of the most serious red flags in the industry — right up there with the scams I have written about in our AC repair scams guide.
6. Manufacturer Warranty: Parts Coverage
Every major HVAC manufacturer offers a warranty on their equipment — but the coverage varies significantly depending on the equipment tier and whether the system is properly registered.
Your quote should specify:
- Compressor warranty: Typically 5 to 12 years depending on the manufacturer and product line. Some premium units (like Lennox's top tier) offer limited lifetime compressor warranties.
- Parts warranty: Typically 5 to 10 years for other components.
- Heat exchanger warranty: On furnaces, this is often 20 years or limited lifetime on premium models.
Critical detail: Most manufacturer warranties require the system to be registered within 60 to 90 days of installation to receive the full warranty period. If registration is missed, the warranty may default to a shorter base period (often 5 years instead of 10). Your quote should specify who handles registration — more on that in item 8.
Red flag: The quote says "10-year warranty" without specifying whether that is manufacturer parts, labor, or both. A manufacturer parts warranty does not cover the labor cost to diagnose and install the replacement part. In Las Vegas, an evaporator coil replacement under parts warranty still costs $800 to $1,500 in labor alone. You need to know what is covered and what is not.
7. Contractor Labor Warranty
The manufacturer warranty covers the parts. The contractor's labor warranty covers the cost of the technician's time to install the replacement part. These are two separate warranties, and most homeowners do not realize they are different until they have a covered failure and still receive a labor bill.
Your quote should specify:
- How many years of labor warranty the contractor provides
- What the labor warranty covers (all components? specific items only?)
- Whether there are any conditions or exclusions
Quality contractors in Las Vegas typically offer 1 to 5 years of labor warranty. Some, including us, extend labor coverage further on premium installations. The length and scope of the labor warranty is one of the clearest indicators of a contractor's confidence in their own installation quality.
Red flag: No mention of labor warranty at all. This means the moment the manufacturer parts warranty kicks in for a covered failure, you are paying full labor rates to have the repair performed. On a compressor replacement, that can be $1,200 to $2,500 in labor — a cost most homeowners do not anticipate when they chose the "cheap" quote.
8. Warranty Registration Responsibility
This is the item most homeowners overlook completely — and it can cost thousands.
Manufacturer warranties must be registered after installation, typically within 60 to 90 days. If registration does not happen, your warranty coverage may drop from 10 years to 5 years or less. That is five years of parts coverage — potentially thousands of dollars — gone because someone did not fill out a form.
Your quote should state:
- Who is responsible for registering the warranty (the contractor or the homeowner)
- The deadline for registration
- What happens if registration is missed
Best practice: The contractor should register the warranty on your behalf and provide you with confirmation. At The Cooling Company, we handle registration as part of every installation and provide homeowners with documentation. This is not exceptional service — it is the bare minimum. But many contractors leave registration as the homeowner's responsibility without clearly communicating that, and the homeowner discovers the gap years later when they file a warranty claim.
Red flag: The quote does not mention warranty registration at all. Ask directly: "Who registers the warranty, and when?" If the contractor says "that is on you," make sure you know the exact process, the deadline, and what documentation you need.
9. Payment Terms
A legitimate quote clearly outlines how and when you pay. No ambiguity. No surprises.
Your quote should specify:
- Deposit amount: If a deposit is required, how much and when it is due. Typical deposits in Las Vegas range from $0 to 30% of the project total. Be cautious of contractors demanding more than 50% upfront.
- Balance due: When is the remaining balance due — upon completion, upon inspection, net 30?
- Accepted payment methods: Check, credit card, ACH, cash. If credit card, is there a processing fee?
- Financing options: If available, the quote should reference available financing terms. Many contractors offer 0% promotional financing for 12 to 60 months through third-party lenders.
- Rebates and incentives: NV Energy PowerShift rebates range from $300 to $2,000 for qualifying high-efficiency equipment. The quote should indicate whether the contractor assists with rebate applications or whether that is the homeowner's responsibility.
Important 2026 note: The federal Section 25C tax credit for high-efficiency HVAC equipment has been terminated. If a contractor's quote still lists a "federal tax credit" as a line-item discount, they are using outdated information — which raises questions about what else in their quote is inaccurate.
Red flag: Vague payment terms like "50% down, balance on completion" without specifying what "completion" means. Does completion mean the system is running? That the inspection passed? That you are satisfied? Define the trigger.
10. Project Timeline
An HVAC installation in a Las Vegas home typically takes 4 to 10 hours for a straightforward like-for-like replacement. More complex projects — system conversions, ductwork modifications, multi-zone installations — can take 1 to 3 days.
Your quote should include:
- Estimated start date (or scheduling process)
- Estimated hours or days to complete
- What time the crew arrives and what time they expect to finish
- Contingency plan: What happens if the installation takes longer than expected? Do they come back the next day? Is there additional cost?
Las Vegas context: During summer, every HVAC company in the valley is slammed. If you are getting quotes in May or June, the timeline matters enormously. A quote that says "installation within 2 weeks" versus "we can install tomorrow" tells you something important about demand, preparation, and whether the contractor has the equipment in stock or is ordering it.
Red flag: No timeline at all. If the contractor cannot estimate when the work will start and how long it will take, they either have not planned the installation or are overcommitting their schedule.
11. Crew Details
You deserve to know who is working on your home.
Your quote should indicate:
- Number of installers assigned to the project. A standard residential HVAC installation should have a minimum of two people. A one-person crew suggests cost-cutting.
- Licensing and certification: Are the installers EPA Section 608 certified for refrigerant handling? Does the lead installer hold a Nevada journeyman card? Is the crew employed by the contractor or subcontracted?
- Background checks: Does the company perform background checks on employees entering your home?
Why this matters: In Las Vegas, the HVAC industry sees significant turnover. Some contractors subcontract installations to independent crews they have limited control over. That is not inherently wrong, but you should know who is in your house and whether they are properly trained and vetted.
Red flag: "Our best guys will handle it." That is not an answer. Ask for specifics.
12. Disposal of Old Equipment
Your old HVAC equipment contains refrigerant, which must be recovered by an EPA-certified technician before the unit can be removed. The old equipment itself weighs hundreds of pounds and contains metals, oils, and potentially hazardous materials.
Your quote should state:
- Whether removal and disposal of the old equipment is included in the price
- How refrigerant will be recovered (EPA-compliant process)
- Whether there are any additional charges for hauling away the old system
Red flag: The quote does not mention disposal, and the contractor plans to leave your old equipment in your yard or charge you separately on installation day. This should be included and specified upfront.
13. Post-Installation: Testing, Walkthrough, and Programming
Installation is not complete when the last bolt is tightened. A professional installation includes commissioning — testing the system to verify it is performing to specification.
Your quote should include:
- System testing: Verifying airflow, refrigerant charge, temperature differential (typically 18 to 22 degrees across the coil), and electrical measurements.
- Homeowner walkthrough: Walking you through the new system, explaining how to operate the thermostat, showing where the filter is, identifying the disconnect location, and answering your questions.
- Thermostat programming: Setting up schedules, connecting to Wi-Fi (for smart thermostats), and optimizing settings for Las Vegas climate.
Red flag: The crew installs the system, turns it on, verifies cold air is coming out of a vent, and leaves. That is not commissioning — that is the bare minimum to avoid an immediate callback. A system can produce cold air while being 20% overcharged on refrigerant, with restricted airflow, and an improperly configured defrost cycle. Those problems show up as inflated energy bills and premature failure months later.
14. What Is Explicitly NOT Included
This might be the most important item on the entire checklist. A good quote tells you what you ARE getting. A great quote also tells you what you are NOT getting.
Common exclusions that should be clearly listed:
- Electrical panel upgrades (if your panel does not support the new equipment)
- Ductwork modifications beyond what is specified
- Attic insulation improvements
- Drywall or ceiling repair if access cuts are needed
- Smart home integration beyond basic thermostat setup
- Extended warranty purchases
- Maintenance plan enrollment
Why this matters: If a quote does not list exclusions, you have no way to know what surprises are coming. Every item that is NOT listed as included or excluded is ambiguous — and ambiguity always resolves in the contractor's favor after the contract is signed.
Red flag: The quote has no exclusions section. Either the contractor thinks they have covered everything (unlikely) or they are leaving room to add charges. Ask: "What is NOT included in this quote?" and get the answer in writing.
15. Contractor License Number and Insurance Proof
Nevada requires HVAC contractors to hold a valid state contractor's license. This is not a suggestion — it is a legal requirement enforced by the Nevada State Contractors Board (NSCB).
Your quote should include:
- Nevada contractor's license number — you can verify this on the NSCB website
- License classification — for HVAC work, this should be C-21 (Refrigeration and Air Conditioning)
- Proof of insurance — both general liability and workers' compensation
- Bond information — Nevada requires contractors to be bonded
Why it is on the quote: Including the license number directly on the quote makes it easy for you to verify before you sign. It also signals that the contractor is legitimate and accountable. Licensed contractors are subject to the NSCB's complaint and disciplinary process, which provides you with recourse if something goes wrong.
Red flag: No license number on the quote, or the contractor hesitates to provide one. Verify every license number at the NSCB website before signing anything. An unlicensed contractor has zero accountability to the state board, your warranty may be void, and your homeowner's insurance may not cover damage caused by unlicensed work.
Side-by-Side: Good Quote vs. Bad Quote
To make this concrete, here is what a quote looks like when it includes these 15 items versus when it does not. Both quotes are for the same job: a 3-ton central AC replacement in a 1,800-square-foot home in Summerlin.
| Item | Good Quote | Bad Quote |
|---|---|---|
| Equipment | Lennox XC16S, 3-ton, 17.2 SEER2/12.5 EER2, matched with CBX27UH air handler, iComfort M30 thermostat | "New 3-ton AC system" |
| Load calculation | "Manual J performed 3/10/26, home requires 2.8-3.2 ton range, 3-ton selected" | Not mentioned |
| Components | "New line set (3/4" x 3/8" R-410A), new disconnect, new condenser pad, existing drain line in good condition" | Not mentioned |
| Ductwork | "Ductwork inspected — two supply boot connections require resealing, included in price" | Not mentioned |
| Permits | "Clark County mechanical permit included ($225)" | Not mentioned |
| Manufacturer warranty | "10-year parts, 10-year compressor (with registration within 60 days)" | "Comes with warranty" |
| Labor warranty | "3-year labor warranty on all installed components" | Not mentioned |
| Warranty registration | "TCC registers warranty within 14 days, homeowner receives confirmation" | Not mentioned |
| Payment | "No deposit, balance due upon completion and inspection, financing available at 0% for 36 months OAC" | "50% deposit" |
| Timeline | "Installation March 18, 7:00 AM start, estimated 6-8 hours, one-day completion" | "We can do it next week" |
| Crew | "2-person crew, lead installer is EPA 608 Universal certified, all employees background-checked" | Not mentioned |
| Disposal | "Old system removal and EPA-compliant refrigerant recovery included" | Not mentioned |
| Post-installation | "System commissioning, temperature differential verification, homeowner walkthrough, thermostat setup" | Not mentioned |
| Exclusions | "Does NOT include: electrical panel upgrades, attic insulation, ductwork beyond specified repairs" | No exclusions listed |
| License/insurance | "NV License #0089893, C-21 classification, insured and bonded" | Not on quote |
| Total price | $8,750 | $5,200 |
The bad quote is $3,550 cheaper on paper. But it is not a real comparison. The bad quote does not include a load calculation. It does not include permits. It says nothing about ductwork, components, labor warranty, disposal, or commissioning. Once the homeowner adds back the missing items — or pays for them as change orders during installation — the actual cost often exceeds the good quote. I have seen this pattern hundreds of times.
The bad quote is not cheaper. It is incomplete.
Real Pricing Data for Las Vegas (2026)
So you have a frame of reference when reviewing quotes, here are the actual installed price ranges we see in the Las Vegas market for 2026. These include equipment, labor, standard materials, permit, and disposal.
| System Type | Size | Low Range (Builder Grade) | Mid Range | High Range (Premium/Variable-Speed) |
|---|---|---|---|---|
| Central AC | 3-ton | $6,325 | $7,800 | $9,775 |
| Central AC | 4-ton | $7,200 | $9,100 | $11,500 |
| Central AC | 5-ton | $8,100 | $10,400 | $13,200 |
| Heat pump | 3-ton | $7,500 | $9,800 | $12,650 |
| Heat pump | 4-ton | $8,600 | $11,200 | $14,500 |
| Gas furnace | 80k BTU | $4,500 | $5,800 | $7,500 |
| Gas furnace | 100k BTU | $5,200 | $6,700 | $8,400 |
Financial incentives (2026): NV Energy PowerShift rebates range from $300 to $2,000 depending on the equipment type and efficiency level. Heat pumps and high-efficiency systems typically qualify for the largest rebates. Your contractor should help you identify applicable rebates and assist with the application process. For the latest details, visit our pricing page.
Any quote significantly below the low range in the table above should prompt you to ask: what is missing? The equipment alone costs a known amount. The labor takes a known number of hours. If the math does not add up, something is being excluded.
How to Get 3 Comparable Quotes
Getting three quotes is standard advice. But three incomparable quotes are worse than one good one, because they create the illusion of due diligence without actually informing your decision. Here is how to make the process work.
Step 1: Define your project before you call anyone. Know what you are replacing (AC only? AC and furnace? Heat pump conversion?), what concerns you have (high energy bills, uneven cooling, age of system), and what budget you are working with. This gives every contractor the same starting point.
Step 2: Require in-home assessments. Never accept a quote based on a phone call or a description of your home. A legitimate HVAC quote requires a physical inspection of the existing system, ductwork, electrical, and installation location. Any contractor willing to quote without visiting your home is guessing.
Step 3: Give every contractor this checklist. Tell them upfront: "I need your quote to include all 15 of these items." This levels the playing field. It also tells the contractor that you are an informed buyer — which immediately changes the dynamic of the conversation.
Step 4: Compare line by line. Once you have three quotes that each address the same 15 items, compare them item by item. You may find that the "middle" quote actually offers the best value because it includes a longer labor warranty, better equipment tier, or ductwork modifications the other contractors ignored.
Step 5: Do not automatically choose the lowest price. Read our analysis of what high-efficiency AC systems actually save over 15 years. The cheapest installation often becomes the most expensive system to own because of higher energy costs, more frequent repairs, and shorter equipment lifespan.
12 Red Flags in HVAC Quotes
Beyond the checklist, here are specific warning signs that should make you pause, ask more questions, or walk away.
1. Verbal-only pricing. If it is not in writing, it does not exist. Period. Nevada law requires written contracts for home improvement work over $1,000.
2. Same-day pressure. "This price is only good today." No, it is not. A legitimate quote is good for 30 to 60 days. The only reason to pressure you into signing today is to prevent you from getting other quotes or doing research. This is the oldest tactic in the book.
3. No permit mentioned. As discussed above, permits are required by law. A contractor who does not mention permits is either planning to skip them or planning to charge you separately.
4. Dramatically low price. If a quote is $2,000 or more below every other bid, something is being excluded. Equipment costs are relatively fixed — contractors pay similar wholesale prices. A dramatically low labor charge usually means fewer hours, fewer workers, or cut corners.
5. No model numbers. "We install Carrier" is not a quote. It is a brand preference. Without model numbers, you cannot verify the efficiency rating, compare across bids, or confirm the warranty terms.
6. "We do not need a permit for replacements." This is false in Clark County, Henderson, North Las Vegas, and every other jurisdiction in the Las Vegas valley. Residential HVAC replacements require permits. Full stop.
7. No mention of load calculation. If the contractor is recommending equipment without calculating what your home needs, they are guessing. That guess costs you money for the entire lifespan of the system.
8. Cash-only payment. Legitimate businesses accept multiple payment forms. Cash-only demands suggest the contractor wants to avoid documentation — which should concern you for tax, warranty, and legal protection reasons.
9. No physical address or license number on the quote. If the quote does not include a company address and license number, you have no way to verify the business is legitimate or pursue recourse if something goes wrong.
10. The "federal tax credit" is listed as a 2026 incentive. The Section 25C residential energy efficiency tax credit was terminated under the One Big Beautiful Bill Act. It does not apply to 2026 installations. A contractor still advertising this incentive is either uninformed or deliberately misleading you to make the net price appear lower.
11. No labor warranty. A contractor who will not warranty their own workmanship for at least one year does not trust the quality of their own installation. Why should you?
12. Reluctance to answer questions. A quality contractor welcomes informed buyers. If asking about model numbers, load calculations, or warranty terms makes the salesperson uncomfortable, defensive, or dismissive, that tells you everything about how they will treat you after the sale.
Questions to Ask After Reading the Quote
Once you have a complete quote in front of you, here are the follow-up questions that separate good contractors from great ones.
"Can you walk me through the Manual J results for my home?" A contractor who performed a real load calculation can explain the results. A contractor who faked it or skipped it will not be able to answer this question.
"Why did you recommend this specific equipment over the alternatives?" The answer should reference your home's needs, your budget, and the trade-offs between efficiency tiers. If the answer is "it is what we carry in stock" or "it is our best seller," the recommendation is not personalized to your situation.
"What happens if you find problems during installation that are not on the quote?" The right answer: "We call you, explain the issue, provide a cost estimate, and get your approval before doing any additional work." The wrong answer: anything that gives the contractor authority to add charges without your consent.
"Can I speak with three recent customers in my area?" Legitimate contractors with a strong track record will happily provide references. We have 4.9 stars across 740+ reviews — and we will connect you with homeowners in your neighborhood who have had the exact same work done.
"What does the first year of ownership look like?" A good contractor will explain the warranty registration timeline, when to schedule the first maintenance visit, what the system's break-in period looks like, and who to call if anything seems off. They are setting you up for long-term success, not just closing the sale.
"What efficiency rebates does this system qualify for, and do you help with the paperwork?" NV Energy PowerShift rebates are significant — $300 to $2,000 depending on the equipment — and a contractor who stays current on the rebate programs demonstrates professionalism. If they mention a federal tax credit for 2026, they are not current.
What Happens After You Accept a Quote at The Cooling Company
I am showing you our specific process because I believe transparency builds trust — and because I want you to use this as a benchmark for any contractor you are considering.
Day of acceptance:
- You sign the proposal, which includes all 15 checklist items
- No deposit required on standard installations
- We order equipment (or confirm availability from our local Lennox warehouse)
- We schedule the installation date and communicate the timeline
Before installation day:
- We pull the building permit
- We confirm the crew assignment and communicate arrival time
- If any pre-work is needed (electrical panel upgrade, ductwork modifications), we coordinate the schedule
Installation day:
- Two to three person crew arrives at the scheduled time
- Old system removal and EPA-compliant refrigerant recovery
- New system installation per manufacturer specifications and local code
- System commissioning: refrigerant charge verification, airflow measurement, temperature differential testing, electrical measurements
- Homeowner walkthrough: thermostat programming, filter location, disconnect location, maintenance schedule, what to watch for in the first 30 days
- Job site cleanup — we leave your home cleaner than we found it
After installation:
- We register your manufacturer warranty within 14 days and provide you with written confirmation
- Building department inspection is scheduled (we coordinate)
- We follow up within 7 days to confirm the system is performing as expected
- We assist with your NV Energy PowerShift rebate application
- Your first maintenance visit is scheduled at the appropriate interval
That is what a complete process looks like. If a contractor cannot describe their post-sale process in that level of detail, they do not have one — and that should concern you.
Why I Published This Checklist
Some of my competitors will read this article and be annoyed. They will say I am making the sales process harder, that I am "setting unrealistic expectations," that homeowners do not need this level of detail.
They are wrong.
Homeowners absolutely need this level of detail. An HVAC system costs $6,000 to $15,000. It affects your energy bills, comfort, and safety for 15 to 20 years. It is the most expensive mechanical system in your home. That purchase deserves a quote that answers every question — not a single number on a piece of paper.
I published this checklist for the same reason we answer every question on our quote process: because informed homeowners make better decisions, and better decisions are better for our industry. The contractors who do excellent work have nothing to hide. The ones who cut corners rely on customer ignorance. I would rather compete on quality, transparency, and craftsmanship than on price obfuscation.
If you are getting quotes from multiple contractors — and you should — bring this checklist. Give every company the same standard. Compare line by line. And if you want to see what a quote looks like when all 15 items are included, call us at (702) 567-0707 or request a quote online. We welcome the comparison.
Frequently Asked Questions
How many HVAC quotes should I get before deciding?
Get a minimum of three quotes from licensed, insured contractors. More importantly, make sure all three quotes address the same 15 items so you can compare them fairly. Three comparable quotes give you enough data to identify the market range and evaluate each contractor's approach. Going beyond five quotes usually produces diminishing returns and delays your project.
Is the cheapest HVAC quote always a bad sign?
Not always — but it requires investigation. If one quote is 10% below the others, that might reflect lower overhead or a promotional offer. If one quote is 25% or more below the others, something is almost certainly excluded: permits, load calculation, ductwork assessment, labor warranty, or quality components. Ask the contractor to explain the price difference item by item before assuming you found a deal. The real cost of running an old or improperly installed AC far exceeds any upfront savings.
Should an HVAC quote include a Manual J load calculation at no extra charge?
For a full system replacement, yes — the Manual J should be included. It is a fundamental part of sizing the equipment correctly. Some contractors charge separately for a Manual J on repair consultations or for standalone energy assessments, which is reasonable. But for a replacement quote where you are spending $6,000 to $15,000, the load calculation is a basic requirement, not a premium add-on. If a contractor charges extra for it on a replacement bid, they are nickel-and-diming you before the project even starts.
How long should an HVAC quote be valid?
A legitimate quote should be valid for at least 30 days. Most quality contractors honor quotes for 30 to 60 days. Equipment pricing does fluctuate with manufacturer price changes and supply chain conditions, so a 90-day window is generous but not unreasonable to request. If a contractor says the price is "only good today," that is a high-pressure sales tactic — not a pricing reality. Walk away.
What permits are required for HVAC installation in Las Vegas?
In Clark County, the City of Las Vegas, Henderson, and North Las Vegas, a mechanical permit is required for HVAC system installations and replacements. The installing contractor pulls the permit, and a building inspector verifies the work after installation. The permit fee is typically $150 to $350 and should be included in your quote. Electrical permits may also be required if the installation involves new wiring or panel upgrades. Never accept unpermitted work — it can void your warranty, violate your homeowner's insurance, and create problems when you sell your home.
What is the difference between a manufacturer warranty and a labor warranty?
A manufacturer warranty covers the cost of replacement parts — the compressor, coil, heat exchanger, and other factory components — for a specified period (typically 5 to 10 years with registration). A labor warranty, provided by your installing contractor, covers the cost of the technician's time and expertise to diagnose the problem and install the replacement part. Without a labor warranty, a "covered" compressor replacement under manufacturer warranty can still cost you $1,200 to $2,500 in labor charges.
Do NV Energy rebates apply to HVAC replacements in 2026?
Yes. NV Energy's PowerShift program offers rebates of $300 to $2,000 for qualifying high-efficiency HVAC equipment, including air conditioners, heat pumps, and furnaces that meet specific efficiency thresholds. The exact rebate amount depends on the equipment type and efficiency level. Your contractor should be familiar with the current program requirements and assist you with the application. Note that the federal Section 25C tax credit has been terminated and does not apply to 2026 installations.
Can I negotiate an HVAC quote?
You can always ask, but understand what you are negotiating. Asking a contractor to match a lower price without understanding what the lower-priced quote excludes is a mistake. Instead, negotiate on value: ask about extended labor warranties, maintenance plan inclusion, thermostat upgrades, or rebate assistance. A quality contractor may have limited flexibility on the base price — equipment and labor costs are relatively fixed — but may be able to add value to the package.
What should I do if a contractor refuses to provide a written quote?
Do not hire them. Nevada Revised Statutes require written contracts for home improvement work exceeding $1,000. A contractor who refuses to put their pricing, scope, and terms in writing is either unaware of the law or deliberately avoiding documentation. Either way, you have zero protection if something goes wrong. Move on to a contractor who treats written documentation as standard practice.
How do I verify a contractor's license in Nevada?
Visit the Nevada State Contractors Board (NSCB) website at nscb.nv.gov and search by the contractor's license number, company name, or owner name. Verify that the license is active (not expired, revoked, or suspended), that the classification includes C-21 (Refrigeration and Air Conditioning) for HVAC work, and that there are no unresolved complaints. You can also call the NSCB directly. This verification takes less than five minutes and should be done before you sign any contract.
What is SEER2 and why does it matter on my quote?
SEER2 (Seasonal Energy Efficiency Ratio 2) is the updated efficiency rating standard that replaced the original SEER metric in 2023. It uses a more realistic testing protocol that better reflects actual operating conditions — including higher external static pressure to simulate real-world ductwork. A higher SEER2 number means lower energy consumption. In Las Vegas, where your AC runs 2,400 to 3,000 hours per year, every point of SEER2 translates to significant annual savings. Your quote should list both SEER2 and EER2 ratings for the specified equipment.
Should ductwork be inspected before an HVAC installation?
Absolutely. Your ductwork delivers conditioned air throughout your home. Leaking, damaged, undersized, or poorly insulated ducts can waste 20% to 40% of the energy your new system produces. A quality contractor inspects the accessible ductwork as part of the in-home assessment and includes any necessary modifications in the quote. If no one has looked at your ducts, they cannot guarantee the new system will perform as rated. This is especially critical in older Las Vegas homes where original ductwork may be decades old.
What does "matched system" mean on an HVAC quote?
A matched system means the outdoor unit (condenser), indoor unit (air handler, furnace, or coil), and thermostat are all specifically designed and tested by the manufacturer to work together. Matched components deliver the rated efficiency, capacity, and warranty coverage. Mismatched systems — where an outdoor unit from one product line is paired with an indoor unit from a different line or manufacturer — often cannot achieve their rated SEER2 efficiency and may have reduced warranty coverage. Your quote should confirm all components are from a matched system combination.
The Bottom Line
An HVAC quote is not just a price. It is a document that defines exactly what you are buying, what protections you have, and what to expect throughout the process. A quote missing critical items is not a bargain — it is a liability.
Use this 15-point checklist on every quote you receive. Print it, take it to every in-home consultation, and do not sign anything until every item is addressed in writing. The companies that welcome this level of scrutiny are the companies worth hiring.
If you are ready for a quote that includes every item on this list — with no pressure, no gimmicks, and no hidden costs — call The Cooling Company at (702) 567-0707 or request your quote online. We are a Lennox Premier Dealer with 4.9 stars across 740+ reviews, and we are happy to be compared line by line against anyone in the valley.