💡 Furnace Repair, Key Facts

✓Most furnace repairs cost $125–$850 after a $79 diagnostic. National average: $300–$400.
✓Top 3 causes: dirty flame sensor ($125–$275), failed ignitor ($175–$375), and faulty blower motor ($350–$750)
✓A cracked heat exchanger is the most expensive repair ($1,500–$3,500) and poses carbon monoxide risk
✓Gas furnaces last 15–20 years with annual maintenance. Use the 50% rule: replace if repair cost exceeds half the price of a new system
✓Las Vegas heating season (Dec–Feb) is short but critical, nighttime lows drop to 30–40 °F in the desert
✓Same-day service available, emergency no-heat calls prioritized 24/7
✓4.8★ across 858+ Google reviews, NATE-certified, licensed, and insured in Nevada

Same-Day Heating Repair

Furnace Repair in Las Vegas

Furnace repair costs $125 to $850 depending on the failed component, with most repairs completed same-day. Our NATE-certified technicians diagnose ignition, airflow, and safety issues, then provide upfront pricing before any work begins.

4.8-star rated across 858+ Google reviews. Licensed, insured, and serving all of Southern Nevada.

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Last updated: March 2026 · Reviewed by licensed HVAC technicians

Furnace Repair Explained, Quick Listen

Common problems, costs, and when to repair vs replace your Las Vegas furnace

0:00~5 min

Audio overview by The Cooling Company

Need furnace repair today?

Same-day appointments are often available across the Las Vegas Valley.

Call (702) 567-0707 Book $79 Diagnostic

What is furnace repair?

Furnace repair is the process of diagnosing and fixing issues that prevent your heating system from operating safely and efficiently. A certified technician tests ignition, airflow, electrical components, and safety controls, then restores proper heat with the right replacement parts and verified performance checks.

Source: The Cooling Company

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How Much Does Furnace Repair Cost?

Most furnace repairs cost between $125 and $850 depending on the failed component, with a national average of $300 to $400. In Las Vegas, typical furnace repair costs range from $125–$850 after a $79 diagnostic fee. The table below shows real pricing for the most common furnace repairs.

Furnace repair cost breakdown by component, updated March 2026
Component	Typical Cost	Price Range	Notes
Flame sensor	$200	$125 - $275	Most common fix
Ignitor / hot surface igniter	$275	$175 - $375	Second most common
Pressure switch	$225	$150 - $325	Safety component
Limit switch	$225	$150 - $300	Overheating protection
Transformer	$250	$175 - $350	Electrical component
Blower motor	$525	$350 - $750	Includes labor
Draft inducer motor	$500	$350 - $700	Combustion airflow
Gas valve	$600	$400 - $850	Safety-critical part
Heat exchanger	$2,400	$1,500 - $3,500	Major repair, often replace
Diagnostic fee	$79	Flat rate	Applied before repair

Prices reflect Las Vegas area rates as of March 2026. Actual cost depends on system brand, age, and accessibility. We provide exact pricing after diagnostics, before any work begins.

* Prices shown are for reference and may vary based on your specific needs. We provide a detailed, upfront quote, including parts, labor, and any additional services, before work begins. No surprises, guaranteed.

Why Is My Furnace Blowing Cold Air?

A furnace blowing cold air is most often caused by a dirty air filter, a thermostat set to FAN instead of AUTO, a pilot light or ignition failure, or an overheating system that trips the high-limit switch. Check these before calling for service.

Dirty or clogged air filter

Replace the filter and restart the system. A blocked filter restricts airflow, causing the furnace to overheat and blow cold air as a safety measure.

Thermostat set to FAN instead of AUTO

Switch the fan setting to AUTO so the blower only runs when the furnace is actively heating. FAN mode circulates unheated air.

Pilot light or ignition failure

For standing-pilot systems, relight the pilot. For electronic ignition, check for error codes on the control board. A faulty flame sensor or ignitor may need replacement.

Overheating / high-limit switch tripped

The limit switch shuts off the burner when the furnace overheats. Causes include blocked vents, a failing blower motor, or dirty heat exchanger. This requires professional diagnosis.

Gas supply issue

Verify the gas valve near the furnace is fully open. Check if other gas appliances work. If you smell gas, leave the home and call your gas company immediately.

Ductwork leaks

Heated air may be escaping through disconnected or damaged ducts before reaching your rooms. A duct inspection can identify and seal leaks.

Furnace blowing cold air

Usually caused by a dirty air filter, thermostat set to FAN instead of AUTO, a failed ignitor, or a tripped high-limit switch. Check the filter and thermostat settings first.

Strange noises (banging, screeching, rattling)

Banging indicates a delayed ignition or loose internal part. Screeching suggests a failing blower motor bearing. Rattling often means loose panels or ductwork. Turn off the system if you hear metal-on-metal grinding.

Yellow or flickering pilot light

A healthy pilot flame is steady and blue. A yellow, orange, or flickering flame indicates incomplete combustion, potentially producing carbon monoxide. This requires immediate professional inspection.

Furnace cycling on and off rapidly (short cycling)

Often caused by a dirty filter, overheating, a malfunctioning flame sensor, or a faulty thermostat. Short cycling wastes energy and accelerates wear on the heat exchanger and ignition system.

Thermostat not reaching set temperature

Could be a failing thermostat, but more often indicates an undersized system, duct leaks, a dirty blower motor, or a heat exchanger losing efficiency. A diagnostic determines the root cause.

Unusual gas or burning smell

A faint burning smell on first startup is normal (dust burning off). Persistent burning smells suggest wiring issues or overheating. If you smell rotten eggs (gas additive), leave the home immediately and call your gas company.

Carbon monoxide detector alarm

A CO alarm near your furnace is a serious emergency. Evacuate immediately, call 911, and do not re-enter until cleared. Cracked heat exchangers, blocked flues, and backdrafting are common causes of CO leaks from furnaces.

Electric bill spiking during heating season

A furnace losing efficiency due to a failing blower motor, dirty burners, a cracked heat exchanger, or clogged filter runs longer and harder, increasing energy costs by 20–40% or more.

Furnace runs but rooms stay cold

Heated air may be escaping through disconnected or leaking ducts, or the blower motor may not be pushing enough airflow. Duct sealing and a blower motor inspection can resolve this.

Visible rust or cracks on the furnace

Rust on the furnace cabinet, flue pipe, or visible cracks near the heat exchanger area indicate age-related deterioration. A cracked heat exchanger is a safety hazard requiring immediate professional evaluation.

Furnace not producing heat

Try these first:

✓Verify thermostat is set to HEAT and temperature is set above current room temp
✓Check and replace the air filter if it looks dirty or clogged
✓Confirm the furnace power switch (usually near the unit) is ON
✓Check the breaker panel for tripped circuits and reset if needed
✓Make sure all supply and return vents in the home are open and unobstructed

Call a pro when:

If the thermostat calls for heat but the furnace does not ignite, or if you see a flashing error code on the control board, likely a failed ignitor, flame sensor, or gas valve issue

Furnace blowing cold air

Try these first:

✓Switch the fan setting from ON/FAN to AUTO, FAN mode circulates unheated air
✓Replace the air filter if clogged, a restricted filter can trip the high-limit switch
✓Check if the pilot light is lit (standing pilot systems) or look for ignition error codes
✓Verify the gas supply valve near the furnace is fully open

Call a pro when:

If the burner ignites briefly then shuts off, or if the blower runs but no heat is produced, this points to a faulty flame sensor, gas valve, or cracked heat exchanger

Furnace making loud noises

Try these first:

✓Turn off the system immediately if you hear grinding or metal-on-metal sounds
✓Check for loose vent covers, duct joints, or cabinet panels that may rattle
✓Listen for a single loud bang at startup, delayed ignition from dirty burners

Call a pro when:

Immediately for grinding, screeching, or repeated banging, running a furnace with a failing blower motor bearing causes heat exchanger damage and safety risk

Furnace short cycling (turning on/off repeatedly)

Try these first:

✓Replace the air filter, the most common cause of short cycling is restricted airflow
✓Make sure no vents or returns are blocked by furniture, rugs, or curtains
✓Check the thermostat location, direct sunlight or drafts cause false readings

Call a pro when:

If replacing the filter does not fix it, likely a failing flame sensor, overheating limit switch, or oversized system issue that requires professional diagnosis

Carbon Monoxide (CO) Warning Signs

CO is odorless and colorless. Symptoms of exposure include persistent headaches, dizziness, nausea, confusion, and flu-like symptoms that improve when you leave the house.

! Install CO detectors on every floor and near bedrooms
! If your CO alarm sounds, evacuate immediately and call 911
! Never run a furnace with a known cracked heat exchanger

Pilot Light & Flame Color Guide

The color of your furnace burner flame tells you whether combustion is clean and efficient, or potentially dangerous.

● Blue flame: Normal, complete combustion, safe and efficient
● Yellow/orange flame: Incomplete combustion, may produce CO. Call for service
● Red flame or soot: Dangerous. Shut off furnace and call immediately

Cracked Heat Exchanger Risks

The heat exchanger separates combustion gases from your home's air supply. A crack allows carbon monoxide to enter your ductwork and living spaces.

! Signs: yellow flame, soot buildup, CO alarm, metallic smell
! Repair cost: $1,500 - $3,500
! For furnaces 15+ years old, full replacement is usually more cost-effective

Read our Repair vs. Replace guide →

Concerned about gas furnace safety?

Our technicians inspect the heat exchanger, test combustion safety, and check CO levels on every furnace repair call.

Call (702) 567-0707

Local Priority: Las Vegas Service

We are Las Vegas based and prioritize local furnace repair calls across Henderson, Summerlin, North Las Vegas, Green Valley, Paradise, and Enterprise. Need fast help today? Our team can often respond the same day.

Las VegasHendersonNorth Las VegasSummerlinGreen ValleyParadiseEnterprise

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No-heat issues and safety concerns get top priority. Call now for the fastest scheduling.

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Las Vegas

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Neighborhoods: Downtown, Paradise, Spring Valley

Landmarks: The Strip, Allegiant Stadium

Henderson

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Neighborhoods: Green Valley, Seven Hills, Anthem

Landmarks: The District, Lake Las Vegas

Summerlin

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Neighborhoods: Downtown Summerlin, The Lakes, Sun City Summerlin

Landmarks: Red Rock Canyon, Downtown Summerlin

North Las Vegas

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Neighborhoods: Aliante, Craig Ranch, Lone Mountain

Landmarks: Aliante Casino, Nellis AFB

Enterprise

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Neighborhoods: Mountain's Edge, Southern Highlands, Blue Diamond

Landmarks: St. Rose Parkway, Red Rock Resort

Paradise

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Neighborhoods: Paradise Palms, Winchester, Maryland Parkway

Landmarks: UNLV, Harry Reid International

Henderson, NV Summerlin, NV North Las Vegas, NV Green Valley, NV Enterprise, NV Paradise, NV Downtown Summerlin, NV Centennial Hills, NV Boulder City, NV Silverado Ranch, NV The Lakes, NV Seven Hills, NV Downtown Las Vegas, NV

At-a-Glance Furnace Repair Facts

Transparent expectations for response time, typical pricing, and technician credentials.

Same-day availableResponse time

$79* diagnostic in Las VegasDiagnostics

$125–$850*Typical repair range

NATE certifiedTechnicians

Furnace Repair Service

Same-day service • Emergency appointments

Same-Day

Upfront pricing after diagnostics

All major furnace brands serviced
Certified, background-checked techs
Upfront pricing before work begins
Repair vs. replace guidance
Financing available with approved credit
Local Las Vegas team

📞 (702) 567-0707 Schedule Service

Emergency vs. Non-Emergency Furnace Repair

Not every furnace issue is an emergency, but some require immediate action. Here is how to tell the difference.

Call immediately (emergency):

! You smell gas or rotten eggs, leave home, call gas company then us
! Carbon monoxide detector is alarming, evacuate, call 911
! Visible sparks, smoke, or burning smell from the furnace
! No heat during freezing temperatures (pipe freeze risk)

Schedule same-day (urgent but not dangerous):

• Furnace blowing cold air or short cycling
• Strange noises (banging, screeching, rattling)
• System not responding to thermostat
• Yellow or flickering pilot light

Not sure if it is urgent?

We can triage symptoms by phone and schedule the fastest available window. For routine checks, our heating maintenance keeps systems efficient and reliable.

Call (702) 567-0707 Heating Maintenance

Before You Call: Quick Checks

These checks solve common no-heat issues and help us diagnose faster if you still need service.

Set the thermostat to HEAT and replace batteries if needed
Check the furnace switch and the breaker panel for tripped circuits
Replace a dirty filter to restore airflow if the system is running
If you smell gas, leave the home and call immediately

Is furnace repair urgent?

Yes if you smell gas, hear grinding, or suspect a carbon monoxide issue. Turn the system off and call immediately. For routine no-heat problems, we can usually schedule same-day service across Las Vegas and nearby neighborhoods.

Source: The Cooling Company

Call for Emergency Help

No heat

Ignition, flame sensor, thermostat, or gas supply issues

Short cycling

Overheating, dirty filter, or airflow restrictions

Loud noises

Blower motor, bearings, or loose panels

Burning smell

Dust on heat exchanger or wiring issues

Uneven rooms

Duct leaks, blower problems, or sizing issues

High energy bills

Inefficient system or failing components

Furnace Repair Cost in Las Vegas

$150to$700

Price depends on:

Type of failure and required parts
System age and condition
After-hours or emergency service
Airflow or duct issues found during diagnostics

Our Furnace Repair Process

⏱️ Typical visit: 1 to 2 hours

1
Confirm symptoms
We verify the no-heat issue, error codes, or abnormal operation and document safety concerns.
💡 Pro Tip: If you smell gas or hear grinding, turn the system off and call immediately.
2
System diagnostics
We test ignition, airflow, pressure, and electrical components to isolate the root cause.
💡 Pro Tip: A full diagnostic prevents repeat failures and unnecessary parts swaps.
3
Upfront repair plan
You receive clear pricing and options before any work begins.
💡 Pro Tip: We explain repair vs. replace when it is close, with pros and cons.
4
Repair and verify
We complete the repair, confirm safe operation, and test performance before we leave.
💡 Pro Tip: We review filter changes and maintenance to reduce future issues.

Repair vs. Replace: Which Makes Sense?

Feature	Repair	Replacement
Upfront cost	$	$$$$
Speed to comfort
Best for	Isolated failures	Old or failing systems
Energy savings	Limited	High
Warranty coverage	Shorter	Longer

Our Recommendation: If your furnace is 12 to 15 years old or has repeated repairs, replacement can be the smarter long-term investment.

Licensed & InsuredNV C-21 HVAC #0075849 • C-1D Plumbing #0078611

4.8/5 Rating858+ Google Reviews

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Real Furnace Repair Reviews

Google reviews from Las Vegas homeowners

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858+ ReviewsGoogle rating as of Sep 10, 2026

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Quick Answers

Do you offer emergency furnace repair?

Yes. We offer emergency appointments for urgent no-heat situations during cold weather. Call us and we will confirm the fastest available window and get a technician to you as quickly as possible.