Expert furnace repair • Same-day service • All major brands
When your furnace fails during a Texas winter cold snap, your family's comfort and safety are at risk. LEX Air Conditioning provides expert furnace repair services throughout the Dallas-Fort Worth metroplex, with licensed HVAC technicians available 24/7 for emergency heating failures. Whether your furnace won't turn on, isn't producing enough heat, is making strange noises, or has completely failed, our heating experts diagnose problems quickly and restore warmth to your home fast.
We service all major furnace brands including Trane, Carrier, Lennox, Rheem, Goodman, York, American Standard, and more. Our technicians carry fully-stocked service vehicles equipped with common furnace parts, allowing us to complete most repairs on the first visit. From simple fixes like thermostat issues and pilot light problems to complex repairs like heat exchanger failures and blower motor replacements, LEX has the expertise and equipment to get your furnace running reliably again.
Don't suffer through a cold night! Call LEX for same-day furnace repair service throughout Plano, Frisco, McKinney, Allen, Richardson, Dallas, Fort Worth, Arlington, and all surrounding DFW communities. Our average response time is 30-60 minutes for emergency heating failures. Call (972) 466-1917 now for immediate furnace repair service!
LEX technicians have seen and fixed every furnace problem imaginable. Here are the most common issues we repair:
If your furnace won't start at all, the problem could be a tripped breaker, faulty thermostat, dead pilot light, failed igniter, or broken control board. Our technicians diagnose the root cause and restore power to your heating system.
When your furnace runs but doesn't heat your home adequately, causes include clogged filters, dirty burners, failing heat exchanger, undersized system, or ductwork leaks. We identify efficiency issues and restore proper heating capacity.
Banging, squealing, rattling, or grinding sounds indicate mechanical problems. Common causes: loose blower wheels, worn bearings, cracked heat exchangers, or failing motors. Unusual noises require immediate professional attention.
Short-cycling wastes energy and stresses your furnace. Causes include dirty filters, thermostat issues, improper airflow, oversized furnace, or flame sensor problems. We diagnose cycling issues and restore normal operation.
Older furnaces have pilot lights that can blow out or fail to stay lit. Newer furnaces use electronic igniters that can crack or fail. We repair or replace faulty ignition systems to restore reliable heating.
The blower motor circulates warm air throughout your home. When it fails, you'll feel little to no airflow from vents. We diagnose motor failures, worn bearings, capacitor issues, and belt problems.
A cracked heat exchanger is a serious safety hazard that can leak carbon monoxide into your home. If we detect a crack during inspection, we'll explain your options for repair or replacement and ensure your family's safety.
Suddenly high energy bills indicate efficiency problems. Causes include dirty filters, aging equipment, ductwork leaks, insufficient insulation, or components working harder than they should. We identify efficiency robbers and fix them.
Don't ignore these warning signs—early detection prevents bigger problems and keeps your family safe and comfortable.
Some rooms are warm while others stay cold, or your home never reaches the thermostat setting. This indicates airflow problems, ductwork issues, or a failing furnace that can't keep up with demand.
A healthy furnace flame is blue and steady. A yellow, orange, or flickering flame indicates incomplete combustion and possible carbon monoxide production—a serious safety hazard requiring immediate professional attention.
If your furnace filter gets dirty much faster than normal (within weeks instead of months), it indicates excessive dust circulation or system problems causing poor air quality and reduced efficiency.
Excessive dryness, static shocks, or respiratory irritation can indicate furnace problems affecting humidity levels. While some dryness is normal in winter, extreme conditions suggest ventilation or combustion issues.
Furnaces typically last 15-20 years. If yours is approaching this age and experiencing frequent problems, repairs may be temporarily fixing an aging system that's nearing the end of its lifespan.
If your CO detector sounds, evacuate immediately, call 911, then call LEX. Carbon monoxide leaks from cracked heat exchangers or improper venting are life-threatening emergencies requiring immediate professional repair.
What to expect when you call LEX for furnace repair service.
Call us or book online. We'll confirm a convenient appointment time—often same-day. For heating emergencies, we prioritize your call and dispatch a technician immediately.
Our technician arrives on time in a fully-stocked service vehicle, performs a thorough furnace inspection, and uses advanced diagnostic tools to pinpoint the exact problem—not just symptoms.
Before any work begins, we explain the problem clearly, recommend the best solution, and provide flat-rate pricing. You'll know exactly what the repair costs—no surprises.
With your approval, we complete the furnace repair using quality OEM parts and proven techniques. Most repairs are completed in one visit, restoring heat to your home quickly.
We test your furnace thoroughly to ensure it's heating properly, check for safety issues like carbon monoxide leaks, verify airflow and temperature, and clean up our work area.
We provide honest advice about your furnace's condition, recommend preventive maintenance to avoid future breakdowns, and explain when repair makes sense vs. replacement if your system is aging.
Most furnace repairs are completed the same day you call. For emergencies, we prioritize your comfort and dispatch technicians immediately—often within 30-60 minutes across DFW.
You'll know the exact repair cost before we start work. No hourly rates that spiral out of control, no surprise charges after the fact—just honest, transparent pricing.
All our technicians are TACLA-licensed, NATE-certified, background-checked, and carry liability insurance. You can trust the expertise and professionalism of every LEX technician.
We repair and service all furnace brands: Trane, Carrier, Lennox, Rheem, Goodman, York, American Standard, Bryant, Amana, Daikin, and more. No matter what you have, we can fix it.
We stand behind our work with a comprehensive service warranty. If you're not completely satisfied with your furnace repair, we'll make it right—that's our promise.
We're not a franchise or big corporation. We're your neighbors, serving DFW families for over 20 years with honest heating and cooling solutions.
Furnace repair costs in the DFW area typically range from $150-600 depending on the problem. Simple fixes like thermostat issues or filter replacements cost $150-250, while more complex repairs like blower motor or heat exchanger replacements cost $400-1,200+. At LEX, we provide upfront, flat-rate pricing before starting work—you'll know the exact cost with no surprise charges. The cost of repair is almost always less expensive than replacing your entire furnace, and we'll give you honest advice if replacement makes more sense for an aging system.
Most furnace repairs are completed in 1-3 hours during a single service visit. Simple repairs like replacing a thermostat, cleaning sensors, or changing filters take 30-60 minutes. More complex repairs like replacing a blower motor, control board, or gas valve take 2-4 hours. Our technicians carry fully-stocked service vehicles with common furnace parts, allowing us to complete most repairs on the first visit without return trips for parts.
The decision depends on your furnace's age, repair cost, and overall condition. General guidelines: If your furnace is under 10 years old and the repair costs less than 30% of replacement cost, repair is usually the better choice. If it's 15+ years old, experiencing frequent breakdowns, and repair costs exceed 50% of replacement cost, investing in a new energy-efficient furnace often makes more financial sense. Our technicians will give you honest advice—we never pressure you into unnecessary replacements. We'll explain your options, show you the numbers, and help you make the best decision for your home and budget.
LEX services all major furnace brands including Trane, Carrier, Lennox, Rheem, Goodman, York, American Standard, Bryant, Amana, Daikin, Coleman, Heil, Payne, Armstrong, Ducane, and more. Our technicians receive ongoing training on the latest furnace technologies and carry diagnostic equipment for all major brands. Whether you have a gas furnace, electric furnace, oil furnace, or heat pump system, we have the expertise and parts to repair it.
Yes! LEX provides 24/7 emergency furnace repair throughout the Dallas-Fort Worth metroplex. When your heating fails during a cold Texas winter night, we respond fast—typically within 30-60 minutes for true emergencies. Emergency service does cost more than regular business hours (typically 1.5x to 2x our standard rates), but we always provide upfront pricing before starting work. We prioritize heating emergencies because we understand how uncomfortable and potentially unsafe a home without heat can be, especially for families with young children, elderly residents, or medical conditions.
Furnaces should be professionally serviced once per year, ideally in early fall before heating season begins. Annual maintenance prevents 80-95% of furnace breakdowns, extends equipment lifespan by 5-10 years, maintains energy efficiency (saving 10-30% on heating bills), and keeps your manufacturer's warranty valid. During a tune-up, we clean burners and heat exchangers, test safety controls, check for carbon monoxide leaks, lubricate moving parts, test ignition systems, inspect electrical connections, and ensure proper airflow. Preventive maintenance costs $99-199 but prevents expensive emergency repairs and keeps your family safe and comfortable all winter.
It depends on the noise. Quiet humming and gentle whooshing sounds are normal. However, loud banging, screeching, grinding, or rattling noises indicate mechanical problems that require immediate attention. Turn off your furnace and call for repair if you hear: loud banging or booming (delayed ignition—can crack heat exchanger), high-pitched squealing (worn blower motor bearings), grinding or scraping (metal-on-metal contact), or rumbling after burners shut off (possible cracked heat exchanger—carbon monoxide risk). Never ignore unusual furnace noises—they're warning signs of potentially dangerous conditions. Call LEX for immediate diagnosis and repair.
Yes! All LEX furnace repairs are backed by our comprehensive service warranty covering parts and labor. Warranty terms vary based on the repair: standard repairs include a 1-year parts and labor warranty, major component replacements (motors, heat exchangers, etc.) include manufacturer warranties of 1-5 years plus our installation warranty, and manufacturer parts warranties remain valid when installed by licensed professionals like LEX technicians. If something goes wrong with our repair work, we return at no additional charge to make it right. We also honor manufacturer warranties on parts we install, handling all warranty claims and paperwork on your behalf.
Don't let furnace problems leave your family in the cold. LEX provides same-day furnace repair with upfront pricing, expert technicians, and a 100% satisfaction guarantee. Call now or schedule online!
Serving DFW Since 2004 • 2,000+ 5-Star Reviews • Licensed TACLA38788C
