Fast & Reliable Heating Repair Services in Houston & Katy, TX

When winter temperatures drop across Greater Houston, a malfunctioning heating system can compromise your home’s comfort and energy efficiency. At 24sevenac, we deliver comprehensive diagnostic and mechanical repair services for all types of home heating technology—including central heat pumps, ductless mini-split heating units, and hybrid heating systems.

Whether your heat pump is stuck in cooling mode, your ductless air handler is blowing lukewarm air, or your overall system is spiking your electric bills, our certified technicians are on call 24/7 to provide fast, long-lasting repairs throughout Houston, Katy, and surrounding communities.

Signs You Need Professional Heating Repair

Modern heating systems use complex refrigerant cycles and electrical controls. Recognizing early warning signs helps prevent major compressor damage or complete system failure:

Heat Pump Stuck in Cooling Mode: If your heat pump fails to switch to heating during cold weather, you likely have a faulty reversing valve, broken solenoid coil, or low refrigerant level.
Ductless Heating Unit Blowing Cold Air: If individual indoor wall units are not heating, common causes include clogged air filters, frozen outdoor coils, or faulty inverter control boards.
Auxiliary or Emergency Heat Running Continuously: If your electric heat strips stay on constantly, your heat pump is losing efficiency, driving up monthly energy bills due to thermostat miscalibration or defrost control failure.
Uneven Temperatures Across Rooms: Cold spots in specific zones often indicate damaged ductwork, faulty zone dampers, or localized air handler blower issues in ductless mini-split systems.
Outdoor Unit Frosting Over or Ice Accumulation: Excessive frost or ice buildup on heat pump outdoor coils signals a malfunctioning defrost board, defective outdoor fan motor, or severe refrigerant leak.

Our Step-by-Step Heating Repair Process

Our systemic diagnostic approach ensures every component of your home heating system is restored to peak operating performance and safety:

Refrigerant & Reversing Valve Inspection: For heat pumps and ductless units, we test system operating pressures, check for micro-leaks, and test reversing valve actuation to guarantee smooth switching between heating and cooling cycles.
Electrical & Control Diagnostics: We test capacitors, contactors, relays, and circuit boards to prevent electrical shorts and ensure reliable voltage delivery across all heating components.
Blower Motor & Airflow Balancing: We evaluate indoor air handlers, clean blower wheels, inspect ductwork static pressure, and verify airflow across heat exchanger coils or electric heat packages.
Thermostat & Inverter Calibration: We verify communication between smart thermostats, outdoor inverter compressors, and zone controllers for precise temperature management.
Post-Repair Performance Verification: After completing mechanical work, we measure total temperature rise (∆T) and verify system cycle performance across all zones to guarantee maximum thermal efficiency.

Recent Service Portfolio

Here is a look at recent heating system fixes completed by our team across the local area:

Khalil Khoury: Tommy did a very good job in fixing the problem related to my newly installed furnace of my AC unit He was very experienced and knowledgeable and determined the problem causing loud noise.
Joyce Marks: Technician went over and above to take care of our issue! Heater works great now!
judithnallie1: Had a new Ac unit installed and also heating system . They did great installing then and clean up after they were done. Very pleased .

      EXCELLENT  
   Based on 540 reviews 
    
 
 
 
   
 
 
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   Subhadra Reddy 
 
 
 
 Trustindex verifies that the original source of the review is Google. He came and figured out the issue and solved it. Very prompt and diligent.
  
 
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   Jason Cook 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thank you for great service and getting ac blowing cold again. And very nice at giving info.
  
 
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   Diane Mumphrey 
 
 
 
 Trustindex verifies that the original source of the review is Google. Customer service was excellent.   Highly satisfied.  Will recommend this company to my friends and family.
  
 
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   Emily S 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional, responsive & flexible. Thank you!
  
 
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   CLAYTON Poullard 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional did a great job
  
 
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   Alex Bradley 
 
 
 
 Trustindex verifies that the original source of the review is Google. Lulla has been phenomenal to work with! Great customer service and always ensuring our questions are answered. Highly recommend.
  
 
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   Michael Denney 
 
 
 
 Trustindex verifies that the original source of the review is Google. Brandon was an amazing technician. He came out and found the issue in a timely manner. He was also in the time slot that was given to me as well. He also shared his knowledge which a lot of people don't. He was very kinda and showed great professionalism.
  
 
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   Darryl Sanders 
 
 
 
 Trustindex verifies that the original source of the review is Google. The technician was excellent! Very people oriented. Very knowledgeable.
  
 
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   Shelley Turner 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was more than pleased with our technician that came to our house!!!! I will be letting my family know how awesome 24SevenAC is!! Thanks again!!!!!!
  
 
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   Jose Cardona 
 
 
 
 Trustindex verifies that the original source of the review is Google. very efficient and clean in all their work

Restore Your Warmth Today — Call 24SevenAC

Don’t let a sudden freeze compromise your family’s safety or comfort. Contact 24SevenAC for immediate, top-rated heating repair backed by our 100% satisfaction guarantee.

Direct Phone: (713) 832-5545

Service Hours: 24 Hours / 7 Days a Week

Location: 2415 S Dairy Ashford Rd Suite C005, Houston, TX 77077

(Certified By):

Texas Heating FAQ

How much does a typical furnace or heating repair cost?

Minor repairs such as replacing a capacitor, flame sensor, or thermostat typically range from $150 to $450. Major repairs like replacing a blower motor or gas valve can range from $500 to $1,200 depending on system specifications.

Why is my heater blowing cold air?

Cold air is usually caused by a tripped circuit breaker, a dirty air filter restricting airflow, a failed hot-surface igniter, or a pilot light that has gone out.

Should I repair or replace my heating system?

If your unit is under 12 years old and the repair cost is less than 50% of a new unit, repair is usually best. If your system is over 15 years old and requires frequent, costly repairs, upgrading to a high-efficiency unit will save money over time.