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.
Where in Denton Do We Run Heating Repair Calls?
Our team services Denton from our Farmers Branch base — 30 miles via I-35E North, roughly 40 minutes. We cover 76201, 76205, 76208, 76209, and 76210 including Robson Ranch, Rayzor Ranch, South Lakes, Mayhill, Denia, Oak Cliff, and Historic Downtown Square. Denton sits in Denton County.
Now serving Denton
Denton is about 40 minutes from our Farmers Branch shop on I-35E. Same-day calls are routine when we dispatch early, and Frosty Club priority scheduling matters more here than closer-in cities because of the drive. We stock R-22 reclaimed for the prewar downtown and Mayhill bungalows, replacement contactors and capacitors for the deferred-maintenance UNT/TWU rental stock, and ECM blower modules for the newer Robson Ranch two-stage equipment.
Denton heating load context
Denton is the most varied AC repair market we cover anywhere in DFW — 1900s-era bungalows around UNT and TWU with retrofitted ductwork the size of a dryer vent feeding 3-ton systems, 1950s-70s deferred-maintenance student rentals, and brand-new Robson Ranch 55+ active-adult builds where retirees run the thermostat 14+ hours a day. Denton is also on CoServ Electric (not Oncor), so the rate math differs from most of DFW.
How Much Does Heating Repair Cost in Denton?
Furnace repair in Denton starts 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 Do Denton Homeowners Choose Frosty's for Heating Repair?
Denton sits far enough north that we book heating repair calls in a different rhythm than the rest of our service area — Denton averages 25-35 freeze nights a year versus 20-30 in Dallas, and that extra 5-10 nights of sub-32°F exposure means Denton furnaces run harder and fail earlier than Irving or Addison equivalents. The UNT and TWU rental stock in the University area and near Vintage compounds the problem: deferred-maintenance rental properties where filters haven't been changed in two years, condensate drains sludged solid, and flame sensors fouled black — and the 2 AM no-heat call comes from a student who has no idea the furnace even needs annual service. Typical Denton winter repair pricing: hot-surface ignitor $400 flat ($340 for Frosty Club members), flame sensor $400, gas valve $400-$1,200, inducer motor $500-$1,300, pressure switch $250-$550.
The Wolflin and Oak Gardens 1950s-70s housing stock brings a different problem set: original gravity-vent chimneys that were later oversized-retrofitted with modern induced-draft 80% AFUE furnaces, which causes flue gas to condense on the way up, corrode the liner, and backfeed as pressure switch trips or CO in the supply air. On 25+ year-old Denton downtown housing I find cracked heat exchangers on roughly 1 in 10 calls — condemn-and-replace, never a repair. Every Denton heating diagnostic includes a CO test at the supply register and a heat exchanger inspection where accessible. CO in a 1950s wood-frame Wolflin home with minimal air sealing is how people die in their sleep; I'd rather lose a repair job than let a family breathe it.
Newer Denton master-plan builds — Robson Ranch, Rayzor Ranch, northern Vintage — largely run heat pumps rather than gas furnaces, which makes sense for Denton's slightly colder climate only because they pair with electric heat strip backup for the genuinely cold nights. Heat pump winter failures: defrost board ($650-$900), reversing valve ($1,200-$1,800), outdoor TXV ($650-$950), electric heat strip elements ($400-$800 each — Denton burns through these faster than southern DFW cities because the strip runs more hours per winter). Refrigerant rule: systems are hermetic, so low refrigerant means a leak we find before recharging. New installs R-454B or R-32 only. Denton is 45 minutes from our Farmers Branch shop on I-35E. Call (469) 254-0548 — flat-rate, human answer. I'm Omar Jacobo, TACLA126718E-licensed, EPA 608 Universal (#2396328), 99 Google reviews at 4.9 stars. Se Habla Español.
Neighborhoods we serve in Denton: Robson Ranch, Rayzor Ranch, Vintage, University area near UNT/TWU, Wolflin, Oak Gardens
Why Should I Trust Frosty's Credentials for Heating Repair?
Because a gas furnace that's repaired wrong can leak carbon monoxide. Every credential below — TACLA126718E, EPA 608 #2396328, 99 Google reviews — is independently verifiable. We red-tag cracked heat exchangers on the spot; we never patch them.
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.
Related Services in Denton
Frosty's covers every residential HVAC need in Denton, TX — one phone line, one flat-rate pricing book, one licensed (TACLA126718E) family-owned team.
Nearby Cities We Also Serve
Same flat-rate heating repairpricing across every city we cover. If you're in a Denton-adjacent neighborhood, these pages have local details for your ZIP.
- Heating Repair in Corinth/heating-repair-corinth-tx
- Heating Repair in Lake Dallas/heating-repair-lake-dallas-tx
- Heating Repair in Highland Village/heating-repair-highland-village-tx
- Heating Repair in Flower Mound/heating-repair-flower-mound-tx
- Heating Repair in Little Elm/heating-repair-little-elm-tx
- Heating Repair in The Colony/heating-repair-the-colony-tx
From Our Blog
Deeper context on heating repair written by Omar Jacobo (EPA 608 #2396328).
- 5 Signs Your Furnace Needs Repair (Before Winter Hits)5 warning signs your furnace needs repair — with exact DFW repair costs. Never repair a cracked heat exchanger. Call (469) 254-0548.Read article →
- Ductwork Problems? How Bad Ducts Cost You MoneyLeaky, damaged ductwork wastes 20-30% of your cooled air. Learn the signs, repair costs, and when to replace. DFW homes. Call (469) 254-0548…Read article →
- Flower Mound HVAC: Why Your Upstairs Won't Cool DownFlower Mound homeowners: why your upstairs is hot, what it costs to fix, and when to replace. Larger homes need special attention. Call (469…Read article →
What Do Denton Homeowners Ask About Heating Repair?
How much does furnace repair cost in Denton, TX?
Diagnostic $85 flat (waived with any 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. Flat-rate — the number I quote before starting is the number you pay.
Why does my UNT-area rental furnace keep failing?
Deferred maintenance. Student rental and TWU-adjacent rental housing in Denton sees furnaces with filters not changed in 1-2 years, condensate drains sludged solid, and flame sensors fouled black with combustion residue. A fall heating tune-up ($150, free with Frosty Club Premium) catches the whole cluster before the first freeze. Most landlord-approved repairs land $250-$700 total when we catch them early.
Does Denton get cold enough to worry about a freeze?
Yes — Denton averages 25-35 freeze nights a year versus 20-30 in Dallas or Irving. That extra exposure means Denton furnaces run harder and fail earlier. Electric heat strip elements on Robson Ranch and Rayzor Ranch heat pumps burn through faster than southern-DFW averages because they run more hours per winter. Fall tune-ups matter more here than in Addison or Farmers Branch.
Is my downtown Denton furnace safe to run if the heat exchanger is cracked?
No — especially in 1950s-70s Wolflin and Oak Gardens wood-frame homes where minimal air sealing means CO from a cracked heat exchanger concentrates in bedrooms overnight. We condemn cracked-heat-exchanger furnaces and quote full replacement rather than attempt a repair that can't be done to safety spec. Every Denton heating diagnostic includes a CO test at the supply register with extra scrutiny on pre-1980 downtown housing.
Do you repair heat pumps in Denton?
Yes — heat pumps dominate newer Robson Ranch, Rayzor Ranch, and northern Vintage master-plan builds. Common Denton heat pump winter failures: defrost board ($650-$900), reversing valve ($1,200-$1,800), outdoor TXV ($650-$950), electric heat strip elements ($400-$800 each). Heat strip replacement is higher-frequency in Denton than southern DFW because the strip runs more hours per winter. We service Carrier, Trane, Goodman, Lennox, Rheem, and all major brands.
Can You Still Service Older R-22 Heat Pumps in Denton?
Yes — EPA 608 Universal cert #2396328 lets me legally recover, recycle, and recharge R-22 under federal regulations. R-22 production ended in 2020 under the Clean Air Act phase-out (EPA.gov), so it now runs $200 per pound installed. A typical Robson Ranch and Rayzor Ranch R-22 leak repair totals $650-$1,000: electronic leak detection ($250) or nitrogen leak test ($500) plus recharge at $200/lb. Optional leak seal $350 — but it can void manufacturer warranties, so I only recommend it in specific cases. For systems past 12 years with major leaks, planning the transition to R-454B or R-32 is usually the better economics. Read our R-410A phase-out explainer for DFW homeowners.
Can You Repair My R-410A Heat Pump in Robson Ranch and Rayzor Ranch?
Yes — heat pumps and ACs use the same refrigerant rules. EPA 608 Universal cert #2396328 covers R-410A heat pump service. AIM Act 2025 phase-out (Energy.gov) only stops new equipment manufacture — existing Robson Ranch and Rayzor Ranch heat pumps stay serviceable. Repair cost runs the same as AC: $250-$500 for leak detection plus $100/lb recharge. Repair is usually right unless the system is past 12 years old. Read our R-410A phase-out explainer for DFW homeowners.
How Do I Schedule Emergency Heating Repair in Denton?
Call us or request service online. Same-day appointments available for Denton homeowners during winter cold snaps. Flat-rate pricing — no surprises, no hourly charges, no upsell scripts.
Written by Omar Jacobo, EPA 608 Universal Certified Lead Technician at Frosty's HVAC LLC. Licensed TACLA126718E.
Written by
By Omar Jacobo
Texas Licensed HVAC Contractor #TACLA126718E · EPA #2396328
Co-Owner of Frosty's HVAC LLC, serving DFW since 2018. Learn more
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