
Furnace Repair in Dallas, TX
Furnace Repair in Dallas, TX
When your furnace stops heating, you need to know what is wrong and what it will take to fix it. Extreme Comfort Air Conditioning & Heating provides professional furnace repair in Dallas and communities throughout North Texas.
Our licensed and insured HVAC technicians diagnose and repair gas and electric furnace problems, including ignition failures, blower motor problems, faulty flame sensors, thermostat issues, airflow problems, and furnaces that simply are not producing enough heat.
Serving Dallas-area homeowners since 2004.
Common Furnace Problems We Repair
Furnace Won’t Turn On
If your furnace does not start when the thermostat calls for heat, the problem could involve the thermostat, electrical supply, control board, ignition system, safety switch, or another furnace component.
Our technicians will diagnose the system to determine why the furnace isn’t starting and identify the right repair.
Furnace Is Blowing Cold Air
A furnace that runs but blows cool or cold air may have an ignition problem, a dirty flame sensor, a thermostat issue, restricted airflow, a gas supply problem, or another malfunction preventing the burners from operating properly.
Because several different problems can produce the same symptom, a technician should diagnose the furnace system issues before replacing parts.

An Extreme Comfort Air Conditioning & Heating technician inspecting a residential furnace for heating problems.
Furnace Keeps Turning On and Off
When a furnace repeatedly starts and stops before your home reaches the thermostat setting, it is known as short cycling.
Restricted airflow, a dirty filter, thermostat problems, an overheating furnace, flame sensor problems, or a malfunctioning limit switch can all contribute to short cycling. Frequent cycling can also put unnecessary wear on furnace components.
Furnace Ignition or Flame Sensor Problems
Most modern furnaces use electronic ignition rather than a continuously burning pilot light. A failed igniter can prevent the burners from lighting, while a dirty or faulty flame sensor may cause the furnace to ignite and then shut down shortly afterward.
Older furnaces may use pilot-light systems that can develop their own ignition problems.
Furnace Blower Motor Problems
The blower moves heated air through your ductwork and into your home. If the blower motor fails or doesn’t operate correctly, the furnace may produce heat without distributing it effectively.
Blower problems can also cause unusual noises, weak airflow, overheating, or repeated furnace shutdowns.
Thermostat Problems
Sometimes the furnace isn’t the problem. Incorrect thermostat settings, wiring problems, failed sensors, dead batteries, or a malfunctioning thermostat can prevent the heating system from operating properly.
Checking the thermostat is part of diagnosing a furnace that will not start, will not stop running, or is not maintaining the desired temperature.
Strange Furnace Noises or Smells
Banging, rattling, squealing, grinding, or other unusual sounds can indicate loose components, blower problems, motor problems, or other mechanical issues.
A brief dusty smell when you first use a furnace for the season can be normal. However, don’t ignore persistent burning odors, electrical smells, or the smell of natural gas.
Cracked or Damaged Heat Exchanger
The heat exchanger separates combustion gases from the air circulated through your home. Damage to the heat exchanger can create a serious safety concern, including the potential for carbon monoxide exposure.
A qualified HVAC technician should evaluate any suspected heat exchanger problem. Depending on the furnace’s age and condition, replacing the furnace may be more appropriate than repairing it.

An Extreme Comfort Air Conditioning & Heating technician diagnosing a residential furnace during a service call.
Signs Your Furnace May Need Repair
Not every furnace problem causes the system to stop working completely. Call for furnace service if you notice:
- The furnace runs, but your home does not get warm
- Cold or lukewarm air is coming from the vents
- The furnace repeatedly turns on and off
- The furnace makes unusual noises
- Airflow from the vents has become weak
- Some rooms remain noticeably colder than others
- The furnace does not respond properly to the thermostat
- You notice persistent burning or unusual odors
- Your heating costs increase without an obvious reason
A furnace problem is often easier to address before it results in a complete loss of heat.
What to Expect From Your Furnace Repair Service Call
We Diagnose the Problem
Your technician will inspect the furnace and related components to determine why your heating system isn’t operating properly.
We Explain What We Find
Once we identify the problem, we will explain what is wrong with the furnace and what is needed to fix it.
You Review the Repair
You will have an opportunity to review the recommended repair before the work proceeds.
We Repair and Test the Furnace
When the repair can be completed during the service visit, the technician will make the approved repair and test the furnace for proper operation.
Furnace Repair or Furnace Replacement?
Not every furnace problem means you need a new heating system. Many furnace problems can be repaired, particularly when the equipment has otherwise been operating reliably.
Replacement may make more sense when a furnace is older, requires frequent repairs, has a serious heat exchanger problem, or when the cost of repairing an aging system becomes difficult to justify.
Extreme Comfort will evaluate the condition of your furnace and explain your options so you can decide whether repairing or replacing the system makes more sense for your home.
Considering a new heating system? Learn more about our Furnace Installation services.
Why Choose Extreme Comfort for Furnace Repair?
Serving North Texas Since 2004
Based in Addison, Extreme Comfort has served homeowners throughout Dallas and surrounding North Texas communities since 2004.
Licensed & Insured HVAC Contractor
Extreme Comfort is a licensed Texas air conditioning and heating contractor.
Texas HVAC Licenses:
TACLB28067E / TACLA05280C
Same-Day Furnace Service
When scheduling permits, we provide same-day furnace repair so you don’t have to wait for heat.
Service Seven Days a Week
Our service hours are 7 a.m. to 9 p.m., seven days a week, giving you more options when your furnace stops working.
4.9 Stars From 800+ Customer Reviews
Extreme Comfort has earned hundreds of customer reviews from North Texas homeowners for HVAC repair, installation, and maintenance.
Furnace Repair Throughout Dallas and North Texas
Extreme Comfort provides residential furnace repair throughout Dallas and surrounding North Texas communities, including:
Addison • Allen • Carrollton • Coppell • Dallas • Fairview • Farmers Branch • Frisco • Garland • Highland Park • Irving • Lewisville • McKinney • Murphy • Parker • Plano • Richardson • Sachse • University Park • Wylie
Need furnace repair in your neighborhood? Call (972) 234-2336 or schedule service online.
Help Prevent Furnace Problems With Regular Maintenance
Regular furnace maintenance can catch small problems before they cause a loss of heat and become expensive repairs. A seasonal inspection also gives your technician a chance to check key heating-system components and confirm the furnace is operating properly.
Extreme Comfort offers a $79 Furnace Check-Up Special for homeowners who want their heating system inspected before or during the heating season.
Homeowners who want ongoing HVAC maintenance can also join The Comfort Club, which includes semi-annual heating and cooling system check-ups.
Dallas Furnace Repair FAQs
Q: How much does furnace repair cost in Dallas?
A: The cost of furnace repair depends on what is causing the problem and which components, if any, need to be repaired or replaced. Extreme Comfort currently offers a $59 Furnace Repair Service Call to diagnose a non-working or malfunctioning furnace. Additional repairs and materials are quoted separately.
Q: Why is my furnace running but not heating my home?
A: A furnace that runs without producing enough heat may have an ignition problem, dirty flame sensor, thermostat issue, airflow restriction, blower problem, or another malfunction. A technician can test the system to determine the specific cause.
Q: Why is my furnace blowing cold air?
A: Cold air from the vents can be caused by thermostat settings, an ignition failure, flame sensor problems, restricted airflow, overheating, or other furnace issues. If the furnace keeps blowing cold air after you check the thermostat and filter, have a licensed HVAC technician inspect it.
Q: Why does my furnace keep turning on and off?
A: Frequent starting and stopping is called short cycling. Possible causes include restricted airflow, a dirty filter, thermostat problems, overheating, a faulty flame sensor, or a limit-switch problem.
Q: How do I know whether to repair or replace my furnace?
A: The decision depends on the furnace’s age, overall condition, repair history, efficiency, and the cost and severity of the current problem. A relatively minor repair may make sense on an otherwise reliable furnace, while a major repair on an older system may justify considering replacement.
Q: Do you offer same-day furnace repair?
A: Yes. Extreme Comfort offers same-day furnace repair when scheduling permits. Our regular service hours are 7 a.m. to 9 p.m., seven days a week.
Q: Do you repair both gas and electric furnaces?
A: Yes. Extreme Comfort diagnoses and repairs both gas and electric residential furnaces throughout the Dallas area.
Q: What should I do if I smell gas near my furnace?
A: If you smell natural gas or suspect a gas leak, leave the home and move to a safe location. Do not operate electrical switches or attempt to diagnose the furnace yourself. Contact your gas utility or emergency services as appropriate. After you address the immediate safety concern, an HVAC technician should inspect the heating system.
If a carbon monoxide alarm sounds, leave the home and follow the alarm manufacturer’s emergency instructions.
Schedule Furnace Repair in Dallas Today
If your furnace is not heating properly, Extreme Comfort Air Conditioning & Heating is ready to help. Our licensed and insured technicians provide furnace repair throughout Dallas and surrounding North Texas communities, with service available seven days a week.
Take advantage of our $59 Furnace Repair Service Call, or call us to schedule your furnace service.
Serving Dallas and North Texas since 2004.



