Short answer: Before you hire any HVAC contractor in Las Vegas, ask these 20 questions — organized into six categories that cover licensing, experience, pricing, warranty, reputation, and ownership. Each question includes what the right answer sounds like and what should concern you. This checklist builds on our 17 questions to ask before buying a new HVAC system (which focuses on the equipment and installation) by expanding into contractor vetting — the due diligence that tells you whether the company itself is trustworthy, stable, and accountable. Print this page, take it with you, and do not apologize for being thorough. A company that welcomes these questions is a company worth hiring.
Key Takeaways
- 20 questions across 6 categories give you a complete picture of any HVAC contractor — not just their price, but their licensing, experience, accountability, and ownership.
- The answers matter more than the price. The cheapest quote from a contractor who cannot answer these questions is more expensive than the highest quote from one who can.
- Licensing questions are non-negotiable. If a contractor cannot provide a valid, verifiable license number, every other question is irrelevant. Stop the conversation.
- Ownership questions reveal incentive structures. A family-owned company and a private equity-backed company operate under fundamentally different motivations. Neither is automatically better or worse, but you should know which you are hiring.
- Any company that resists these questions is telling you something. A trustworthy contractor welcomes informed buyers. A contractor who gets defensive, evasive, or impatient with legitimate due diligence is a contractor who prefers uninformed buyers. That preference should concern you.
How to Use This Checklist
Ask every question to every contractor you are considering. Compare the answers side by side. The contractor who answers most completely, most transparently, and most comfortably is usually the one worth hiring — regardless of whether they are the cheapest. Price is one factor. Competence, honesty, and accountability are the others.
For each question below, we provide the question itself, why it matters, what a good answer sounds like, and what should concern you.
Category 1: Licensing (Questions 1-4)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 1 | What is your Nevada contractor license number? | A specific number, given immediately, verifiable on the NSCB portal. | Hesitation, inability to provide, or a number that does not verify as active. |
| 2 | What license classification do you hold? | C-21 for HVAC work. C-1D if plumbing is involved. Ideally both. See why dual licensing matters. | Only holding C-21 but quoting plumbing work (water heaters, gas lines). Operating outside license scope is illegal. |
| 3 | What is your monetary bid limit? | A limit appropriate for the scope of your project. For residential HVAC, limits of $100,000+ indicate established operations. | A very low limit (under $50,000) for a large project, or inability to answer the question. |
| 4 | Are you bonded and insured? | "Yes — we carry general liability insurance, workers' compensation, and our bond is on file with the NSCB. I can provide certificates of insurance." | Vague answers or reluctance to provide documentation. No workers' comp means YOU could be liable if a worker is injured on your property. |
Why licensing questions matter
Licensing is the baseline. A contractor without a valid, active, appropriately classified license is operating illegally in Nevada. Everything else — quality, price, reputation — is irrelevant if the contractor is not legally qualified to do the work. Verify every license number yourself on the NSCB portal. For a complete walkthrough, see our guide to reading NSCB records.
Category 2: Experience (Questions 5-8)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 5 | How long has this company operated in Las Vegas? | A specific number of years under the current ownership. "We have been family-owned since [year]" or "We were founded in [year]." | Confusion between brand history and current entity history. A brand name operating since 1939 under an LLC formed in 2022 is a 4-year-old company using a legacy name. |
| 6 | Who will perform the actual work? | "Our own W-2 employees. The lead installer has [X] years of experience and holds [specific certifications]." | "We use subcontractors" or vague answers about staffing. If subs do the work, ask about their licensing, insurance, and accountability. |
| 7 | Do you perform Manual J load calculations? | "Yes, on every installation. We use [specific software] calibrated for Las Vegas climate data. Here is what the output looks like." | "We size by square footage" or "We match your existing system." These are guesses, not engineering. See our 17 questions post for why this matters. |
| 8 | Can you provide references from similar projects? | Immediate willingness and specific names/numbers of recent customers with similar projects in your area. | Reluctance, offering only testimonials from the website (which are curated and may be old), or saying "just check our Google reviews." |
Why experience questions matter
Las Vegas HVAC is different from HVAC anywhere else. The extreme heat (regularly exceeding 115 degrees), the alkaline soil that corrodes copper, the hard water that destroys heat exchangers, the dust that clogs systems, and the monsoon humidity that challenges drainage — all require specific local knowledge. A contractor with 15 years of Las Vegas experience has encountered and solved problems that a contractor from another market has never seen.
Category 3: Pricing (Questions 9-12)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 9 | What is the total installed price, everything included? | A specific dollar amount that includes equipment, labor, materials, permit, disposal, startup, and tax. Written, itemized, signed. | Verbal-only quotes, "ballpark" pricing, or numbers that do not include permits, disposal, or materials. See red flags. |
| 10 | What is NOT included in this quote? | An honest, specific list. "This quote does not include ductwork modification, electrical panel upgrades, or attic insulation — here is what those would cost if needed." | "Everything is included" with no specifics. If they cannot tell you what is excluded, they have not thought through the project thoroughly enough. |
| 11 | Will you provide a written, itemized estimate? | "Absolutely. Here is our standard estimate format" — then you see line items for every component. | "We do flat-rate pricing." Flat-rate is not inherently bad, but you should still see what is included. A flat rate with no itemization hides what you are paying for. |
| 12 | Will you pull a permit for this work? | "Yes. The permit fee is included. We schedule the inspection after installation." | "We do not need a permit for a changeout" (false in Clark County). "It is optional" (it is not). "It adds cost and delay" (the cost is minimal and the delay is the time it takes for an inspector to verify your safety). |
Why pricing questions matter
The most common source of HVAC disputes is not defective equipment or poor workmanship — it is unexpected costs. A quote that seemed affordable becomes expensive when additional charges appear during or after installation. Written, itemized estimates with explicit inclusion and exclusion lists eliminate surprises. If a contractor will not document the price in writing, they are preserving the ability to change it.
Category 4: Warranty (Questions 13-16)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 13 | What does your warranty cover — specifically? | Separate, specific terms for: manufacturer parts warranty, manufacturer compressor warranty, and installer labor warranty. Duration, coverage, and process for each. | "We guarantee our work" with no specifics. "Lifetime warranty" with no documentation of what "lifetime" means or what is covered. |
| 14 | What voids the warranty? | Honest disclosure: "Failure to register within [X] days, failure to maintain annual service, unauthorized modifications, or use of non-OEM parts." | Claiming nothing voids it (untrue for every manufacturer warranty) or not knowing the terms. |
| 15 | Is your warranty transferable if I sell my home? | "The manufacturer warranty transfers to the new owner. Our labor warranty [does/does not] transfer — here are the terms." | Not knowing or not having considered this. For homeowners who may sell within the warranty period, transferability affects home value. |
| 16 | What is your response time for warranty service calls? | "We respond to warranty calls within [specific timeframe]. Warranty calls are prioritized the same as paid service calls." | Long wait times for warranty work, or routing warranty calls to a different (slower) queue than paid service calls. |
Why warranty questions matter
A warranty is only as good as the company standing behind it. If the installing company goes out of business, changes ownership, or makes warranty claims difficult to file, the warranty on paper becomes worthless in practice. Understanding the specific terms — and the company's track record of honoring them — is essential. For a detailed warranty comparison across brands, see our HVAC warranty comparison guide.
Category 5: Reputation (Questions 17-18)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 17 | What is your Google rating and how many reviews do you have? | A specific number given confidently. A high rating (4.5+) with a substantial review count (200+) indicates consistent quality over time. | A high rating with very few reviews (easy to manufacture), a rating below 4.0, or defensiveness about the question. |
| 18 | Do you have any NSCB complaints or disciplinary actions? | "No. You can verify that at [NSCB portal link]. Our license number is [number]." Transparency and willingness to be checked. | Deflection, claiming not to know, or minimizing documented complaints. Always verify the answer yourself. |
Why reputation questions matter
Reputation is the lagging indicator of quality. A company cannot maintain a 4.5+ Google rating across hundreds of reviews while consistently doing poor work — eventually, the reviews reflect reality. NSCB complaint history adds the regulatory dimension: not just what customers think, but what the state regulatory body has found. Together, these provide a reliable picture. For a side-by-side reputation comparison of Las Vegas HVAC companies, visit our contractor comparison page.
Category 6: Ownership (Questions 19-20)
| # | Question | What You Want to Hear | Red Flag |
|---|---|---|---|
| 19 | Who owns this company? | A specific name. "This company is owned by [person/family name]. We have been independently owned since [year]." Or honest disclosure: "We are part of [parent company/platform]." | Vague answers like "it is a corporation" or inability to name the owner. If the person answering cannot tell you who owns the company, the ownership structure may be intentionally opaque. See how PE is changing HVAC. |
| 20 | How are your technicians compensated? | "Our technicians are paid hourly [or salary]. Their pay does not depend on what they sell." This eliminates the structural incentive to upsell. | "Our technicians earn performance bonuses" or "commission is part of their compensation." Commission-based pay creates a financial incentive to recommend replacements over repairs. |
Why ownership questions matter
Ownership determines incentives, and incentives determine behavior. A family-owned company's incentive is long-term reputation in the community. A PE-backed company's incentive is hitting return targets within a 3-to-5-year hold period. A commission-based technician's incentive is maximizing the sale. None of these structures are inherently dishonest, but understanding them helps you evaluate recommendations in context.
The Cooling Company's Answers
We will answer every question on this checklist, right here, in public:
- License numbers: #0075849 (C-21) and #0078611 (C-1D). Look us up.
- Classifications: C-21 (Refrigeration and Air Conditioning) and C-1D (Plumbing). Dual licensed.
- Bid limit: $700,000 per license.
- Bonded and insured: Yes. Certificates available on request.
- Operating since: 2011, continuously under the same family ownership.
- Who does the work: Our own W-2 employees. We do not subcontract installations.
- Manual J: Yes, on every installation.
- References: Available on request. 740+ Google reviews are public.
- Pricing: Written, itemized estimates. Total price includes everything.
- Exclusions: Clearly documented on every estimate.
- Written estimates: Always. No exceptions.
- Permits: Always pulled. Included in the price.
- Warranty: Specific terms documented in writing for every project.
- Warranty voidance: Disclosed upfront, in writing.
- Warranty transferability: Manufacturer warranties transfer per manufacturer terms. Labor warranty terms provided in writing.
- Warranty response: Same priority as paid calls.
- Google rating: 4.9 stars, 740+ reviews.
- NSCB complaints: Zero. Since 2011. Verify it yourself.
- Ownership: The Santana family. Wellington Santana, founder. Family-owned, locally operated.
- Technician compensation: Hourly. Not commission-based.
If you want to work with a company that answers every question on this list without hesitation, call (702) 567-0707 or request a quote online. A+ BBB rating. Zero NSCB complaints. Family-owned since 2011.
All information in this article is sourced from publicly available records. If you believe any information is inaccurate, please Contact Us. We are committed to accuracy and will promptly verify and update any data points you identify.