Heating Repair in Lewisville, TX
Fast, honest, flat-rate residential furnace and heat pump repair in Lewisville. Diagnostic $85 (waived with repair). Licensed TACLA126718E, EPA 608 Universal certified, family-owned since 2018.
Where in Lewisville Do We Run Heating Repair Calls?
Our team services Lewisville from our Farmers Branch base — 18 miles via I-35E North, roughly 22 minutes. We cover 75056, 75067, and 75077 including Castle Hills, Valley Vista, Old Town, Vista Ridge, and Highland Village border. Lewisville sits in Denton County.
Now serving Lewisville
Lewisville is about 22 minutes from our Farmers Branch shop up I-35E. Business-hours response is typically within 2 hours for Lewisville addresses. We carry coil-cleaning chemistry that handles freeway particulate (different formulation than residential-only suburb work), static-pressure test instruments for the Old Town apartment-conversion duct rework calls, plus ECM blower modules and communicating-system flashing tools for the Castle Hills two-stage and variable-speed Carrier and Trane equipment.
Lewisville heating load context
Lewisville's defining HVAC challenge isn't the lake — it's the I-35E corridor itself. Old Town and the Mill Street area pull diesel particulate, brake dust, and tire rubber off one of the busiest stretches of I-35E in north Texas onto outdoor condenser coils, fouling fins faster than any DFW suburb away from a major freeway. Several 1970s-90s Old Town and Valley Vista properties were originally apartment buildings that got condo-converted or split into duplexes — the resulting daisy-chained ductwork and shared-attic mechanical layouts almost never balance airflow correctly without a static-pressure rework. Castle Hills' 4,300-home master-planned south end is a different animal: 2005-2020 luxury construction with two-stage and variable-speed equipment whose ECM control boards drift over time and need re-flashing more often than older single-stage gear. Three distinct repair patterns inside one ZIP map.
How Much Does Heating Repair Cost in Lewisville?
Furnace repair in Lewisville 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 Lewisville?
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 Lewisvilleheating 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 Lewisville Homeowners Choose Frosty's for Heating Repair?
Lewisville heating repair calls spike December through February when Denton County takes its 20-30 freeze nights. The spread across Lewisville's housing stock means I see everything in one week: Old Town 1960s-1970s ranch furnaces with aging heat exchangers that need condemning, Valley Vista 1986-era 80% AFUE units with cracking hot-surface ignitors ($400), and Castle Hills 2000s-2020s 96% AFUE condensing furnaces with failed pressure switches ($250-$550) or seized inducer motors ($500-$1,300). Flame sensor carbon buildup ($400 to clean or replace) is the single most common failure across all Lewisville neighborhoods — it causes the furnace to light, run for 5-10 seconds, then shut off.
Heat exchangers are what I take most seriously on any Lewisville furnace over 15 years old — and that includes most of Old Town, much of Valley Vista, and the earliest Castle Hills builds. A cracked heat exchanger leaks combustion gases including carbon monoxide into the supply air that circulates through every room. We don't repair cracked heat exchangers — they can't be safely welded to factory spec. We condemn the furnace and quote replacement. Every Lewisville diagnostic includes a CO reading at the nearest supply register and a visual heat exchanger inspection where access allows. Atmos Energy serves gas to most Lewisville homes; all gas work follows NFPA 54.
Castle Hills and newer Vista Ridge homes increasingly run heat pumps with electric heat strip backup instead of gas furnaces. Heat pump winter failures look different: failed defrost boards, stuck reversing valves, outdoor TXV restrictions, and electric heat strip element failures when temps drop below 15°F. Heat pumps briefly run in cooling mode during defrost cycles — steam off the outdoor unit on a 25°F morning is normal, not a malfunction. I'm Omar Jacobo, EPA 608 Universal #2396328, and Mariafernanda holds TACLA126718E. Call (469) 254-0548 for $85 diagnostic (waived with repair).
Neighborhoods we serve in Lewisville: Castle Hills, Valley Vista, Old Town, Vista Ridge, Highland Village
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 Lewisville
Frosty's covers every residential HVAC need in Lewisville, TX — one phone line, one flat-rate pricing book, one licensed (TACLA126718E) family-owned team.
- AC Repair in Lewisville/ac-repair-lewisville-tx
- AC Replacement in Lewisville/ac-replacement-lewisville-tx
- Heating Replacement in Lewisville/heating-replacement-lewisville-tx
- Ductwork in Lewisville/ductwork-lewisville-tx
- Emergency HVAC in Lewisville/emergency-hvac-lewisville-tx
- Tune-Up in Lewisville/tune-up-maintenance-lewisville-tx
Nearby Cities We Also Serve
Same flat-rate heating repairpricing across every city we cover. If you're in a Lewisville-adjacent neighborhood, these pages have local details for your ZIP.
- Heating Repair in Flower Mound/heating-repair-flower-mound-tx
- Heating Repair in The Colony/heating-repair-the-colony-tx
- Heating Repair in Highland Village/heating-repair-highland-village-tx
- Heating Repair in Carrollton/heating-repair-carrollton-tx
- Heating Repair in Coppell/heating-repair-coppell-tx
- Heating Repair in Corinth/heating-repair-corinth-tx
From Our Blog
Deeper context on heating repair written by Omar Jacobo (EPA 608 #2396328).
- What Is a SEER2 Rating? (And Why It Matters for Your Wallet)SEER2 ratings explained in plain English — how they affect your energy bills and what to look for when buying a new AC. Call (469) 254-0548.Read article →
- Coppell AC Maintenance: Protecting Your Two-Story HomeTwo-story Coppell home not cooling upstairs? AC maintenance tips for 2-story homes with exact costs. TACLA126718E. Call (469) 254-0548.Read article →
- How Long Does an AC System Last in Texas?How long should your AC last in Texas? 12-15 years with maintenance, less without. Learn the signs it's time to replace. Call (469) 254-0548…Read article →
What Do Lewisville Homeowners Ask About Heating Repair?
How much does furnace repair cost in Lewisville, TX?
Diagnostic $85 flat (waived with repair). Common Lewisville furnace repairs: 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 — you see the total before we start.
Is my Lewisville furnace safe with a cracked heat exchanger?
No. A cracked heat exchanger leaks combustion gases — including carbon monoxide — into your supply air, which circulates through every room. We don't repair cracked heat exchangers because they can't be safely welded to factory spec. We condemn the furnace and quote full replacement. Every Lewisville diagnostic on a 15+ year old system includes a heat exchanger inspection and CO check.
Do you repair heat pumps in Lewisville?
Yes. Castle Hills and newer Vista Ridge homes increasingly use heat pumps with electric heat strip backup. Common winter failures include defrost board faults, failed reversing valves, outdoor TXV issues, and heat strip element failures. We service Carrier, Trane, Goodman, Lennox, Rheem, and all major residential brands.
My Lewisville furnace keeps shutting off after a few minutes — why?
Short cycling on a furnace usually means a dirty flame sensor (most common — $400 flat to clean or replace), overheating from restricted airflow (dirty filter or closed registers), or a failing pressure switch ($250-$550). The $85 diagnostic identifies the cause. Flame sensor cleaning solves roughly 60% of these calls across Old Town, Valley Vista, and Castle Hills.
Hard freeze hit Lewisville and my heat died — how fast can you come out?
During hard freezes we prioritize no-heat calls. We're about 20-25 minutes from Lewisville via I-35E. Business-hours response is typically within 2 hours; Frosty Club Premium members get same-hour response when available. After-hours emergency diagnostic is $250 for non-members, $212.50 for Basic members, $85 for Premium members. Call (469) 254-0548.
Can You Still Service Older R-22 Heat Pumps in Lewisville?
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 Castle Hills and Valley Vista 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 Castle Hills and Valley Vista?
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 Castle Hills and Valley Vista 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 Lewisville?
Call us or request service online. Same-day appointments available for Lewisville 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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