Heating & Furnace Repair in DFW

North Texas winters are mild until they aren't. When a hard freeze arrives and the furnace quits, we're the call that gets heat back in the house.

DFW furnaces sit idle for months, then get asked to run hard the moment a cold front drops temperatures 40 degrees overnight. That idle time is exactly why so many systems fail on the first genuinely cold night of the year — dust on the burners, a stuck igniter, a flame sensor coated from last season.

We repair gas furnaces, electric furnaces and heat strips, and heat pumps in heating mode across the Dallas–Fort Worth metroplex. Every heating call includes a combustion and safety inspection, because a furnace problem can be a health problem.

Common Furnace Problems We Fix

Safety First on Every Heating Call

Gas heating equipment produces carbon monoxide, and its only safe exit is the flue. When a heat exchanger cracks or a vent gets blocked, CO can enter the living space — colorless, odorless, and dangerous.

That's why we inspect the heat exchanger, verify draft and flue integrity, check gas pressure, and test for CO on every heating repair. If we find an unsafe condition we'll tell you plainly and shut the equipment down rather than patch around it. If you ever smell gas, leave the house first and call the gas company, then call us.

Heat Pumps Behave Differently — That's Not a Fault

Many DFW homes use heat pumps rather than furnaces, and heat pump air feels cooler at the vent than furnace air even when the system is working perfectly. That confuses a lot of homeowners into calling for a repair that isn't needed.

Real heat pump problems look different: the outdoor unit iced over and staying that way, auxiliary heat running constantly, or the system blowing cold air because a reversing valve or defrost board has failed. We diagnose which of those you actually have before quoting anything.

Preventing the Next Failure

Almost every no-heat emergency we attend was preventable. A fall tune-up cleans the burners and flame sensor, tests the igniter before it strands you, verifies gas pressure, and catches a cracked heat exchanger while it's still a repair rather than an emergency replacement.

It's also the cheapest insurance in the house — and Comfort Club members get it twice a year along with priority scheduling on the cold nights when everyone calls at once.

How We Diagnose a Heating Failure

  1. Confirm the call for heat — We verify the thermostat, power, and gas supply first — a surprising number of no-heat calls start here.
  2. Read the fault sequence — Modern furnaces log their own failures. We read the control board's diagnostic code before assuming anything.
  3. Test components under load — Igniter, flame sensor, pressure switch, inducer, gas valve, limits, and blower — measured, not eyeballed.
  4. Safety verification — Heat exchanger inspection, draft test, and CO reading before we hand the system back to you.

Heating Repair — Frequently Asked Questions

Why is my furnace blowing cold air?

Most often the burners aren't lighting — a failed igniter, a dirty flame sensor, or a lockout after failed ignition attempts — while the blower still runs. On a heat pump, cold air can mean a failed reversing valve or a system stuck in defrost. Both need a technician to confirm.

How much does furnace repair cost?

Igniters, flame sensors, and thermostats are inexpensive fixes. Inducer motors, gas valves, and control boards cost more, and a cracked heat exchanger usually points toward replacement. You get the exact price before we start the repair.

Do you handle emergency no-heat calls at night?

Yes, 24/7 across the metroplex. During a hard freeze we prioritize homes with no heat at all, especially those with infants, elderly residents, or medical needs.

How long should a furnace last in North Texas?

Because they run so few hours here, gas furnaces often reach 15–20 years. The limiting factor is usually the heat exchanger and the age of the matched cooling equipment rather than the burner section.

Why does my furnace smell like burning when it first turns on?

Dust burning off the heat exchanger after months of no use is normal and clears within an hour of runtime. A persistent burning smell, an electrical smell, or a smell of gas is not normal — shut the system off and call us.

Is a cracked heat exchanger repairable?

No. A cracked heat exchanger cannot be safely repaired, and running the furnace with one risks carbon monoxide exposure. Depending on the furnace's age and warranty status, the fix is either a heat exchanger replacement or a new furnace — we'll show you both paths.

Related Services

Furnace & Heater Installation · 24/7 Emergency HVAC Repair · HVAC Maintenance & Tune-Ups · All HVAC services

Heating Repair Across Dallas–Fort Worth

We provide heating & furnace repair throughout the DFW metroplex: Dallas, TX · Fort Worth, TX · Arlington, TX · Plano, TX · Irving, TX · Garland, TX · Frisco, TX · McKinney, TX · Richardson, TX · Mesquite, TX · Grand Prairie, TX · Carrollton, TX · Denton, TX · Lewisville, TX · Allen, TX · Sunnyvale, TX · Forney, TX · Terrell, TX · Rowlett, TX · Rockwall, TX. See every area we serve.

Absolute Comfort Mechanical HVAC — licensed, insured, family-owned, serving the Dallas–Fort Worth metroplex. Call 214-900-2533 for 24/7 AC repair, heating, cooling, and commercial refrigeration service.