Fast, reliable furnace and heating repairs when you need them most — backed by 22+ years of trusted service.
When winter temperatures drop into the 30s across Plano, Frisco, and Carrollton, your heating system becomes essential. A broken heater isn't just uncomfortable — it can put your family's safety at risk during cold snaps.
At LEX Air Conditioning and Heating, we've been keeping North Texas homes warm since 2004. Our certified technicians diagnose and repair all types of heating systems quickly and correctly the first time, so you can get back to comfort without the stress.
Comprehensive solutions for all your heating repair needs.
Expert diagnosis and repair of gas and electric furnace systems, including heat exchanger issues, ignition problems, and airflow restrictions.
Complete heat pump repair services including refrigerant leaks, compressor failures, reversing valve issues, and defrost control problems.
24/7 emergency service for no-heat situations, carbon monoxide concerns, and other urgent heating failures that can't wait until morning.
Fix temperature control issues with professional thermostat repair and calibration for manual, programmable, and smart thermostats.
Replace worn or broken parts including blower motors, limit switches, flame sensors, ignitors, capacitors, and control boards with quality components.
Repair air leaks and temperature inconsistencies with professional ductwork inspection and repair services.
Don't ignore these warning signs — early detection can save you money and prevent bigger problems.
Your system runs but doesn't produce enough warm air to maintain comfortable temperatures, or doesn't heat at all.
Banging, grinding, squealing, or rattling sounds coming from your furnace or vents indicate mechanical problems that need attention.
Burning, musty, or sulfur-like odors can signal electrical issues, gas leaks, or other dangerous problems requiring immediate repair.
Your heater turns on and off constantly without reaching the set temperature, wasting energy and indicating a system malfunction.
Unexplained spikes in heating costs suggest your system is working harder than it should due to efficiency-robbing problems.
A yellow or flickering pilot light instead of a steady blue flame can indicate carbon monoxide issues — call immediately for safety.
Noticing any of these issues? Don't wait until it becomes an emergency.
Call for Same-Day ServiceWhat to expect when you call LEX for heater repair.
Call us or book online. We'll confirm a convenient appointment time and dispatch a technician — often same-day.
Our technician arrives on time, diagnoses the issue, and provides upfront pricing before any work begins. No surprises.
With your approval, we complete the heater repair using quality parts and proven techniques. Most repairs are done in one visit.
We test everything to ensure it's working properly, clean up our work area, and answer any questions you have.
Same-day service with 30-45 minute response times across DFW. We know heater repair issues can't wait.
You'll know the cost before we start. No hidden fees, no surprises — just honest, transparent pricing.
Our technicians are fully licensed, insured, and background-checked. We hire the best so you get the best.
We repair and service all major brands and models. No matter what you have, we can help.
We stand behind our work. If you're not happy, we'll make it right — that's our promise.
We're not a franchise or a big corporation. We're your neighbors, serving DFW families for 22+ years.
"Excellent service from Daniel and Lex Air Conditioning. Daniel was kind, courteous, and thorough. He didn't rush the job and got everything working to my satisfaction. This level of service is commendable and I am grateful to Lex and Daniel specifically for getting my system back online. Great job!"— Adam Thornton, Richardson, TX
We believe in transparent pricing. While every heater repair situation is different, here's what you can expect:
*Prices are estimates and may vary based on specific conditions. We always provide upfront pricing before starting work.
Every home is different. Call us for a free diagnosis and upfront quote — no obligation.
(972) 466-1917Financing available with approved credit
Our technicians are trained to work on all major heating brands.
Don't see your brand? We service all makes and models. Call us to confirm.
We provide heater repair throughout the Dallas-Fort Worth metroplex.
We offer complete heating solutions for your home.
Heater repair costs typically range from $150 to $2,000 depending on the issue. Minor repairs like thermostat adjustments or filter replacements cost $150-$400, while major component replacements like heat exchangers can reach $800-$2,000. We always provide upfront pricing before starting any work, so you'll know exactly what to expect.
If your heater is less than 10 years old and the repair cost is under 50% of replacement value, repair is usually the best choice. However, if your system is 15+ years old, requires frequent repairs, or has major issues like a cracked heat exchanger, replacement may be more cost-effective. Our technicians will assess your system honestly and help you make the best decision.
Common causes include a dirty air filter restricting airflow, thermostat set to "fan only" mode, a malfunctioning pilot light or ignitor, or problems with the limit switch. If you've checked your filter and thermostat settings and still have cold air, call us for professional diagnosis — it could indicate a more serious issue.
Most heater repairs are completed in one visit lasting 1-3 hours. Simple fixes like replacing a thermostat or flame sensor take 30-60 minutes, while more complex repairs involving blower motors or control boards may take 2-3 hours. If parts need to be ordered, we'll provide a timeline and temporary solutions when possible.
Yes! We provide 24/7 emergency heater repair throughout the Dallas-Fort Worth area. If you have no heat during cold weather, detect a gas smell, or suspect carbon monoxide issues, call us immediately at (972) 466-1917. We understand heating emergencies can't wait, and we'll get a technician to you as quickly as possible.
We repair all major heating brands including Trane, Carrier, Lennox, Rheem, Goodman, York, American Standard, Bryant, Amana, Daikin, Ruud, Coleman, Payne, and Armstrong. Our technicians are trained on all types of heating systems including gas furnaces, electric furnaces, heat pumps, and ductless systems. Don't see your brand listed? Call us — we service all makes and models.
Fast, reliable service from a company you can trust. Call today or book online.
Serving DFW since 2004 • 2,000+ 5-Star Reviews
