Fast furnace repair for Stonebridge Ranch, Craig Ranch, Adriatica, and all McKinney neighborhoods. When your heater fails on a cold night, we're just 15-20 minutes away from our Plano headquarters with 24/7 emergency service.
Trusted heater repair experts serving McKinney since 2004.
Fast response times to McKinney from our Plano headquarters.
Three generations of honest work since 2004.
Fully licensed (TACLA38788C), bonded, and background-checked technicians.
4.8-star average across Google, Facebook, and Yelp.
McKinney's mix of established neighborhoods like Historic Downtown and newer master-planned communities like Stonebridge Ranch and Craig Ranch means homes with furnaces of every age and type. From 1980s-era gas furnaces in older McKinney homes to modern high-efficiency systems in Adriatica, our technicians have seen it all. When your heater stops working on a freezing North Texas night, you need a team that knows McKinney homes inside and out—and can get there fast.
LEX Air Conditioning has been the trusted name in heating services across Collin County since 2004. Based in nearby Plano, we provide 15-20 minute response times to all McKinney ZIP codes (75069, 75070, 75071). Our licensed TACLA38788C technicians are trained on all furnace brands—Trane, Carrier, Lennox, Rheem, Goodman, and more—and arrive in fully-stocked trucks ready to diagnose and repair your heater on the first visit. We offer upfront pricing with no hidden fees, 24/7 emergency service, and a satisfaction guarantee that's backed by three generations of family values.
Whether you're dealing with a pilot light that won't stay lit, strange noises from your furnace, uneven heating throughout your home, or a complete system breakdown, our McKinney heater repair specialists can restore your comfort quickly and safely. We specialize in gas furnace repair, electric heating systems, heat pump troubleshooting, thermostat replacement, air handler repairs, and carbon monoxide safety inspections. From minor pilot light adjustments to major blower motor replacements, LEX delivers fast, reliable heating repairs that McKinney families count on when temperatures drop.
Complete furnace diagnostics and repair for all heating systems.
Expert repair of gas furnaces including pilot light issues, ignition problems, burner malfunctions, and flame sensor cleaning. We diagnose heat exchanger cracks, gas valve failures, and carbon monoxide risks to keep your McKinney home safe and warm all winter long.
Learn MoreIs your pilot light going out repeatedly? We repair faulty thermocouples, clean dirty pilot assemblies, replace electronic ignition systems, and fix gas flow issues. Same-day service available for McKinney homes in Stonebridge Ranch, Craig Ranch, and beyond.
Learn MoreWhen your furnace runs but doesn't blow hot air, the blower motor may be failing. We replace worn blower motors, capacitors, and fan belts quickly. Our trucks carry the most common parts for McKinney furnaces, so we can often complete repairs the same day.
Learn MoreSometimes the problem isn't your furnace—it's the thermostat. We diagnose wiring issues, replace outdated thermostats with smart models, recalibrate sensors, and fix communication errors between your thermostat and heating system for accurate temperature control.
Learn MoreA cracked heat exchanger can leak deadly carbon monoxide into your home. Our certified technicians perform thorough heat exchanger inspections with cameras and combustion analysis tools. We'll tell you honestly if repair or replacement is the safest option for your McKinney family.
Learn MoreHeaters don't wait for business hours to break down. That's why LEX offers 24/7 emergency heating repair in McKinney. When you're facing a freezing night without heat, call us anytime. We'll have a licensed technician at your door in 15-20 minutes, ready to restore warmth.
Learn MoreDon't wait until your furnace fails completely. Watch for these warning signs and call LEX at the first sign of trouble to avoid costly breakdowns and uncomfortable nights.
If your pilot light keeps going out, you likely have a faulty thermocouple, dirty pilot assembly, or gas supply issue. This is one of the most common furnace problems in older McKinney homes and requires professional repair to restore reliable heating.
Unusual furnace sounds indicate mechanical problems—loose parts, worn belts, failing blower motors, or burner issues. Ignoring these noises can lead to complete system failure. Call LEX for immediate diagnosis and repair.
A healthy pilot flame should be blue. Yellow, orange, or flickering flames indicate incomplete combustion and potential carbon monoxide production—a serious safety hazard. Turn off your furnace and call LEX immediately for a safety inspection.
If your furnace cycles on but doesn't produce warm air, you may have a blower motor failure, broken limit switch, or ductwork disconnect. Our McKinney technicians can diagnose the issue quickly and restore heat to your home.
A sudden spike in your gas bills often means your furnace is losing efficiency due to dirty burners, clogged filters, or worn components. LEX can tune up your system to restore efficiency and lower your heating costs.
Never ignore a carbon monoxide alarm. Evacuate immediately, call 911, and then call LEX. Cracked heat exchangers and improper combustion can produce this deadly, odorless gas. We'll perform a full safety inspection before restoring your heat.
"Our furnace went out at 11 PM on the coldest night of the year. LEX had a technician at our Stonebridge Ranch home in 20 minutes. He diagnosed a bad ignitor, had the part on his truck, and had us back up and running in under an hour. Honest pricing, professional service, and they saved us from a freezing night with two young kids. Can't recommend them enough!"
We serve every neighborhood in McKinney with fast, reliable furnace repair.
ZIP Codes: 75069, 75070, 75071
LEX is based in Plano, just 15-20 minutes from McKinney. We offer same-day service for most repairs and 24/7 emergency response when you need heat restored immediately. Call (972) 466-1917 anytime, and we'll dispatch the nearest available technician to your McKinney home.
Heater repair costs vary depending on the issue. Simple fixes like thermostat replacement or pilot light repairs typically range from $150-$400. More complex repairs like blower motor replacement or heat exchanger work can run $500-$1,500. We provide upfront pricing before any work begins—no surprise charges. Emergency service calls start at $89, which is applied to your repair if you proceed.
A pilot light that won't stay lit usually indicates a faulty thermocouple (the safety device that detects flame), a dirty pilot assembly, or low gas pressure. Turn off your furnace, wait a few minutes, and try relighting following your furnace's instructions. If it goes out again, call LEX. This is a common issue in older furnaces and typically requires professional cleaning or thermocouple replacement—parts we carry on all service trucks.
Yes. A healthy pilot flame should be blue with a small yellow tip. A completely yellow, orange, or flickering flame indicates incomplete combustion, which can produce deadly carbon monoxide gas. If you see a yellow flame, turn off your furnace immediately, evacuate if you feel dizzy or nauseous, and call LEX for an emergency safety inspection. We'll check your heat exchanger, clean your burners, and ensure your furnace is safe to operate.
It depends on the furnace's age, repair cost, and efficiency. If your furnace is over 15 years old and the repair costs more than 50% of a new system's price, replacement usually makes more financial sense. Modern furnaces are also 20-30% more efficient, saving you money on gas bills. Our McKinney technicians will give you honest advice—we'll never push a replacement if a repair will serve you well for several more years. See our furnace replacement page for replacement options.
Yes. LEX holds Texas license TACLA38788C for heating and air conditioning work. All our technicians are fully licensed, insured, and background-checked. We've been serving McKinney and Collin County since 2004 with the same family values and quality workmanship that built our reputation.
Call LEX today for fast, reliable furnace repair from your local experts.
