Heating Repair in Denton, TX
Fast, honest, flat-rate residential furnace and heat pump repair in Denton. Diagnostic $85 (waived with repair). Licensed TACLA126718E, EPA 608 Universal certified, family-owned since 2018.
How Much Does Heating Repair Cost in Denton?
Furnace repair in Dentonstarts at $85 for the diagnostic (waived with any repair). Most common heating repairs fall in the $250-$1,300 range. We're flat-rate, which means the price quoted before we start is the price you pay at the end. Frosty Club members save 10-15% on every repair.
| Repair | Regular Price | Frosty Club Member |
|---|---|---|
| Diagnostic / service call(Waived with repair) | $85 | $72.25 |
| Furnace ignitor replacement | $400 | $340 |
| Flame sensor replacement | $400 | $340 |
| Pressure switch replacement | $250 – $550 | $212.50 – $467.50 |
| Pilot assembly replacement | $350 – $550 | $297.50 – $467.50 |
| Gas valve replacement | $400 – $1,200 | $340 – $1,020 |
| Inducer motor replacement | $500 – $1,300 | $425 – $1,105 |
| Blower motor (standard) | $750 – $1,500 | $637.50 – $1,275 |
| Blower motor (ECM) | up to $2,800 | up to $2,380 |
| Control board (universal) | $500 | $425 |
| Control board (ECM / modulating) | up to $3,500 | up to $2,975 |
| Thermostat (basic) | $350 | $297.50 |
| Thermostat (programmable) | $500 | $425 |
| Cracked heat exchanger(CO safety — never repaired) | FULL FURNACE REPLACEMENT | FULL FURNACE REPLACEMENT |
Cracked Heat Exchanger: Safety First
A cracked heat exchanger means combustion gases — including carbon monoxide — can leak into your home's air supply. We NEVER repair a cracked heat exchanger. The only safe fix is a full furnace replacement. If I find a crack during diagnostic, I red-tag the unit on the spot and show you our three replacement tiers. Learn more about CO safety at the EPA.
Save More with Frosty Club
Basic ($99/yr):10% off all services | Premium ($300/yr): 15% off + $500 repair credit + 2 free tune-ups (fall heating + spring AC)
Join Frosty ClubWhat Are the Most Common Heating Problems in Denton?
Texas winters are mild, but furnaces still need regular service — and when they fail on a 28°F January morning, they tend to fail all at once. Here's what I see most often on Dentonheating calls, and what each one typically costs to fix.
Furnace won't ignite
Failed hot-surface ignitor ($400) or coated flame sensor ($400). Both are same-day fixes. The $85 diagnostic identifies the exact cause.
Blowing cold air instead of hot
Usually a failed ignitor, bad flame sensor, or a stuck gas valve. We run a combustion analysis to confirm the exact cause before quoting.
Loud buzzing or grinding
Dying inducer motor ($500-$1,300) — the draft fan pulling combustion gases through the heat exchanger. Replace before it takes out the control board.
Short cycling (on/off/on/off)
Dirty flame sensor, failing limit switch, or restricted airflow. Can be an early warning of a heat exchanger issue — we diagnose carefully.
Gas smell or CO alarm
EMERGENCY — leave the house, call Atmos Energy at 866-322-8667, then call us. We locate the leak source and repair or red-tag as required.
Cracked heat exchanger
Carbon monoxide risk — NEVER repaired. Full furnace replacement required for safety. We confirm with combustion analyzer and bore-scope inspection.
Why DentonHomeowners Trust Frosty's for Heating Repair
Denton sits a little farther north than the rest of our service area, and that shows up in our winter call volume — we typically see 25-35 freeze nights a year up there, a few more than Dallas proper. That's enough to expose every weak point in a furnace that sat unused from April to October. The calls we get from Denton in December and January are dominated by three failures: cracked hot-surface ignitors ($400), dirty flame sensors ($400), and stuck or failed gas valves ($400-$1,200). All three have the same symptom — furnace tries to light, fails, goes into lockout. For prewar downtown Denton homes around the square and Wolflin, I also see a lot of aging inducer motors ($500-$1,300) that grind or fail to spin up on furnaces that were retrofit-installed in an attic or closet never quite sized for them.
The heat exchanger is the one I worry about most, especially in the older-housing-heavy stock around the Denton square and UNT. Crack a heat exchanger and you get carbon monoxide in the supply air — which means we're not repairing it, we're condemning the furnace and quoting a full replacement. Every diagnostic we do in Denton includes a CO check at the supply register and a visual inspection of the heat exchanger where we can access it. If I see rust, scale, or flame impingement, I tell you straight. I'd rather lose a repair job than let a family breathe CO.
If you have a heat pump instead of a gas furnace — common in newer Robson Ranch and Rayzor Ranch builds — the winter failures are different: failed defrost boards, bad reversing valves, and TXV issues on the outdoor unit. Heat pumps run in cooling mode briefly during a defrost cycle to melt ice off the outdoor coil, so if you're seeing steam off the outdoor unit on a cold Denton morning, that's normal — not a problem. Rural acreage homes on the outskirts sometimes run electric resistance heat with no heat pump at all, which is the most expensive way to heat a house in Texas — if that's you, ask about the heat pump conversion numbers next time you call. (469) 254-0548.
Neighborhoods we serve in Denton: Robson Ranch, Wolflin, Rayzor Ranch, Mockingbird Lane, Oak Gardens
Why Our Credentials Matter for Heating Repair
TACLA126718E
Texas HVAC Contractor License held by Mariafernanda Jacobo. Issued and regulated by the Texas Department of Licensing and Regulation.
EPA 608 Universal
Omar Jacobo, #2396328. Required by the U.S. EPA for any refrigerant work on heat pumps (R-22, R-410A, R-454B, R-32). Also ensures safe combustion analysis standards.
Energy Star Partner
Replacement heating systems meet or exceed U.S. Department of Energy minimums. 90%+ AFUE furnaces and ENERGY STAR heat pumps qualify for some utility rebates.
Learn more about our credentials on our About page or visit omar-jacobo.com.
Heating Repair FAQ for Denton, TX
How much does furnace repair cost in Denton, TX?
Diagnostic $85 flat (waived with repair). Common Denton furnace repairs: hot-surface ignitor $400 ($340 for Frosty Club members), flame sensor $400 ($340), gas valve $400-$1,200 ($340-$1,020), inducer motor $500-$1,300 ($425-$1,105), pressure switch $250-$550. We're flat-rate, so you see the total before we start.
Is my furnace safe to run if the heat exchanger is cracked?
No. A cracked heat exchanger leaks combustion gases — including carbon monoxide — directly into your supply air. We don't repair cracked heat exchangers because they can't be safely welded back to spec. Instead, we quote a full furnace replacement. Every Denton diagnostic includes a heat exchanger inspection and CO check at the supply register. This is especially important in older downtown homes where furnaces have sometimes been running 20+ years.
Do you repair heat pumps in Denton?
Yes. Newer Robson Ranch and Rayzor Ranch homes often have heat pumps instead of gas furnaces, and some rural acreage homes run heat pumps too. Common heat pump failures include defrost board faults, failed reversing valves, and outdoor TXV issues. We service Carrier, Trane, Goodman, Lennox, Rheem, and all major residential brands.
Why does my Denton furnace keep shutting off after a few minutes?
Short cycling on a furnace is usually a dirty flame sensor (most common), overheating due to restricted airflow (clogged filter or dirty blower — very common in UNT rental stock), or a failing pressure switch. The $85 diagnostic identifies the cause. Flame sensor cleaning runs $400 flat ($340 for members) and solves 60% of these calls.
My Denton furnace smells like something burning — should I call?
First time in the fall — that's usually dust burning off the heat exchanger and goes away in a few minutes. Normal. If the smell persists, is electrical, or smells like gas, shut the system off at the thermostat and call us at (469) 254-0548. Electrical smells mean an overheating motor or wiring; gas smell means leave the house and call the gas company first.
Related Services & Resources
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Written by Omar Jacobo, EPA 608 Universal Certified Lead Technician at Frosty's HVAC LLC. Licensed TACLA126718E.
Written by
Omar Jacobo
EPA 608 Certified Technician (#2396328) | Co-Owner, Frosty's HVAC LLC
Omar has been serving local homeowners since 2018. Learn more
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