When your furnace fails on a cold Rockwall night, LEX responds fast—serving Rockwall Harbor, Chandlers Landing, and Heath with expert heater repair from our Plano headquarters in just 20-25 minutes.
Trusted heating experts serving Rockwall since 2004.
Fast response times to Rockwall 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.
Rockwall's waterfront neighborhoods and established communities from Rockwall Harbor to Chandlers Landing rely on dependable heating when North Texas cold fronts roll through. Whether you're in the historic homes near downtown, the newer developments in the Heath area, or the luxury properties along Lake Ray Hubbard, your gas furnace or heat pump is critical for comfort during our winter months. Most Rockwall homes feature natural gas furnaces—efficient heating systems that require regular maintenance and occasional repairs to operate safely and reliably.
LEX Air Conditioning has been serving Rockwall homeowners since 2004, responding to heater emergencies and providing routine furnace maintenance from our Plano headquarters—just 20 minutes away. Our licensed technicians (TACLA38788C) understand the unique heating needs of Rockwall's diverse housing stock, from established single-family homes to waterfront estates. We specialize in furnace repair, pilot light issues, heat pump service, and carbon monoxide safety inspections. When your heater fails during a cold night, we're available 24/7 to restore warmth to your home quickly and safely.
Our comprehensive heating services include emergency furnace repair, routine maintenance, heat exchanger inspection, thermostat troubleshooting, blower motor replacement, and complete system diagnostics. We service all major brands including Carrier, Trane, Lennox, Rheem, Goodman, and American Standard. With upfront pricing, same-day availability, and a satisfaction guarantee, LEX is Rockwall's trusted choice for heating repair and maintenance. Serving all Rockwall ZIP codes including 75032, 75087, and 75189.
Comprehensive furnace repair and heating system service for total comfort and safety.
When your heater stops working in the middle of a cold Rockwall night, we respond 24/7 with rapid diagnosis and repair. Our technicians arrive equipped with common parts for most major brands, often completing repairs in a single visit to restore heat to your home quickly.
Learn MoreA pilot light that won't stay lit or electronic ignition failure is one of the most common heating issues in Rockwall's gas furnaces. We diagnose thermocouple problems, flame sensor issues, and gas valve failures to restore safe, reliable ignition and operation to your heating system.
Learn MoreGas furnaces produce carbon monoxide, and a cracked heat exchanger or blocked flue can create dangerous conditions. Our technicians perform thorough carbon monoxide testing, heat exchanger inspection, and ventilation checks to ensure your family's safety throughout the heating season.
Learn MoreMany newer Rockwall homes feature heat pumps that provide both heating and cooling. We service all aspects of heat pump systems including defrost controls, reversing valves, auxiliary heat, and refrigerant levels. Heat pumps are ideal for North Texas's milder winters and provide energy-efficient heating.
Learn MoreStrange noises, weak airflow, or intermittent heating often indicate blower motor problems. We diagnose and repair capacitor failures, bearing wear, belt issues, and motor malfunctions. Regular blower maintenance extends system life and improves efficiency throughout your Rockwall home.
Learn MoreModern thermostats control your comfort precisely, but calibration issues, wiring problems, or battery failures can cause heating inconsistencies. We repair and replace all thermostat types including programmable, Wi-Fi, and smart thermostats from brands like Nest, Ecobee, and Honeywell.
Learn MoreDon't wait for a complete breakdown during a cold snap. These warning signs indicate your furnace or heat pump needs professional attention.
If your furnace runs but doesn't produce heat, or your home can't reach the thermostat setting, you may have ignition problems, a faulty heat exchanger, or ductwork issues requiring immediate professional diagnosis and repair.
A healthy gas furnace pilot light burns steady blue. Yellow, orange, or flickering flames indicate incomplete combustion and possible carbon monoxide production—a serious safety hazard requiring immediate attention from our licensed technicians.
Banging, rattling, squealing, or grinding noises from your furnace indicate mechanical problems. These sounds often signal blower motor issues, loose components, belt problems, or ignition delays that can worsen if not addressed promptly.
A furnace that turns on and off repeatedly (short cycling) wastes energy and indicates problems with your thermostat, flame sensor, heat exchanger, or blower motor. This pattern reduces system lifespan and increases energy costs significantly.
Sudden increases in winter heating costs without corresponding weather changes often indicate declining furnace efficiency. Worn components, dirty burners, or airflow restrictions force your system to work harder, consuming more gas or electricity unnecessarily.
If your carbon monoxide detector sounds, evacuate immediately and call 911. Gas furnaces with cracked heat exchangers or blocked flues can produce dangerous CO levels. Our technicians provide comprehensive safety inspections and repairs to prevent this life-threatening situation.
"Our furnace quit working at 10 PM on the coldest night of the year. LEX had a technician at our Chandlers Landing home within 30 minutes. He diagnosed a bad flame sensor, had the part on his truck, and we had heat restored before midnight. Professional, fast, and reasonably priced—exactly what we needed during an emergency."
We serve every neighborhood in Rockwall with fast, reliable heating service.
ZIP Codes: 75032, 75087, 75189
LEX responds to Rockwall heater emergencies in 20-25 minutes from our Plano headquarters. We're available 24/7 for emergency furnace repair, and we offer same-day service for non-emergency appointments. Most Rockwall neighborhoods—including Rockwall Harbor, Chandlers Landing, and Heath—receive service within our standard response window.
Furnace repair costs vary depending on the issue. Simple repairs like thermostat replacement or flame sensor cleaning typically range from $150-$300, while major repairs like heat exchanger replacement or blower motor installation cost $500-$1,500. We provide upfront pricing before beginning work, and we offer financing options through approved credit. There's never a charge if you decline our estimate after diagnosis.
A pilot light that won't stay lit usually indicates a faulty thermocouple (the safety device that senses flame), dirt on the pilot assembly, or gas supply issues. In some cases, drafts or improper venting cause the problem. Our technicians diagnose the specific cause and make repairs to restore reliable ignition. If you smell gas, evacuate your home immediately and call the gas company before calling for service.
Gas furnaces produce carbon monoxide (CO) as a byproduct of combustion, but properly functioning systems vent it safely outside. Cracked heat exchangers, blocked flues, or incomplete combustion can allow CO into your home—a serious health hazard. We recommend annual furnace maintenance that includes heat exchanger inspection, carbon monoxide testing, and ventilation checks. Install CO detectors on every floor and replace batteries twice yearly for maximum safety.
A gas furnace burns natural gas to create heat, while a heat pump uses electricity to transfer heat from outside air into your home (and reverses in summer for cooling). Heat pumps work efficiently in North Texas's mild winters but may need auxiliary/emergency heat during extreme cold. Many newer Rockwall homes have heat pumps, while older homes typically have gas furnaces. LEX services both system types with equal expertise.
Yes. LEX holds Texas HVAC license TACLA38788C issued by the Texas Department of Licensing and Regulation. All our heating technicians are fully licensed, insured, and background-checked. We've been serving Rockwall and the North Texas area since 2004 with professional, reliable heating and cooling service.
Call LEX today for fast, reliable heating service from your local experts.
