Three flat-rate residential furnace & heat pump replacement tiers, $8,000-$20,000+. Gas furnace or heat pump configurations. Frosty Thermostat free. Licensed TACLA126718E. Financing with $0 down on approved credit.
Real stories from recent Frosty's HVAC jobs in Lewisville, TX -- published straight from the field.
A family on Tucson Dr in Lewisville came home from two weeks away to a unit that had gone from blowing hot air to just buzzing with no airflow at all. Our tech tracked it down to a failing capacitor on their hard-working condenser, replaced it, and got the system running again — ...
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.
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'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.
Heating replacement in Lewisville runs $8,000-$20,000+ depending on tier, capacity, and whether you choose a gas furnace or a heat pump. All three tiers are flat-rate — the price I quote during the free in-home estimate is the price you pay at install. Financing available with $0 down.
Goodman · 15 SEER2 · Single-stage
1-year labor warranty
Carrier · 18 SEER2 · Dual-stage
2-year labor warranty
Trane · 20+ SEER2 · Variable speed
5-year labor warranty
Add-on: 10-Year Labor Warranty +$3,500
Heat pump add-on: +$2,000 over gas furnace in the same tier (combined heating + cooling)
$0 down on approved credit through Optimus, Synchrony, GreenSky. A $12,000 Stay Frosty heating replacement at 9.99% for 120 months runs about $159/month. 50% deposit required at booking.
See Financing OptionsEvery tier — Stay Cool, Stay Frosty, It's A Frosty Life — includes the same baseline package. No bait-and-switch, no surprise add-ons at install. Here's exactly what you get.
Lewisville heating replacement covers the full spectrum. Old Town 1960s-1970s ranches often still run 80% AFUE natural-draft furnaces that belong in a museum — no secondary heat exchanger, no condensate management, open-draft venting that wastes 20% of every Atmos Energy dollar up the flue. Valley Vista 1986-era homes have 80% AFUE units that are slightly newer but still well past replacement age. Upgrading any of these to a 96% AFUE condensing furnace isn't a drop-in swap: condensing units require PVC intake and exhaust runs with a proper condensate drain, so I plan the flue path during the estimate visit. On attic-mounted systems — which is every Lewisville home, because Texas doesn't have basements — routing the new PVC through existing roof penetrations takes careful planning.
Castle Hills homes with natural gas service (most of them, via Atmos Energy) typically do best with a 96% AFUE two-stage gas furnace across Denton County's 20-30 annual freeze nights. But newer all-electric Castle Hills luxury builds and some Vista Ridge homes run heat pumps, and a variable-speed heat pump from Trane or Carrier works well in this climate with electric heat strips as backup below 15°F. Heat pumps add $2,000 over the base tier but often qualify for federal tax credits. I run a gas-vs-heat-pump 10-year operating cost comparison on every Lewisville replacement — the answer depends on your gas rate, your Oncor electric rate, and your home's insulation envelope. All new equipment uses R-454B or R-32 refrigerant per current regulations.
Every Lewisville heating replacement includes: new disconnect and electrical whip if needed, proper flue venting (gas) or heat pump line set (electric), City of Lewisville permit, Frosty Thermostat with dehumidification mode (our smart WiFi thermostat), condensate management on the new coil, vibration isolation on variable-speed equipment, and full cleanup/haul-away. Labor warranty matches tier: 1-year on Stay Cool, 2-year on Stay Frosty, 5-year on It's A Frosty Life. Financing through Optimus, Synchrony, and GreenSky — $0 down on approved credit. I'm Omar Jacobo (EPA 608 Universal #2396328); Mariafernanda holds TACLA126718E.
Neighborhoods we serve in Lewisville: Castle Hills, Valley Vista, Old Town, Vista Ridge, Highland Village
Because a new furnace install requires a city permit pulled under a licensed contractor — TACLA126718E. Combine that with EPA 608 #2396328 for heat-pump refrigerant work and 143 Google reviews at 4.9 stars, and every credential below is independently verifiable before install day.
Texas HVAC Contractor License held by Mariafernanda Jacobo. Every install permitted under this license with the TDLR.
Omar Jacobo, #2396328. Required by the U.S. EPA for all heat pump installs with R-454B, R-32, and legacy refrigerants under the 2025 phase-down.
All three tiers meet or exceed U.S. Department of Energy AFUE and SEER2 minimums. 90%+ AFUE and 20+ SEER2 tiers qualify for some utility rebates.
Learn more about our credentials on our About page or visit omar-jacobo.com.
Frosty's covers every residential HVAC need in Lewisville, TX — one phone line, one flat-rate pricing book, one licensed (TACLA126718E) family-owned team.
Same flat-rate heating replacementpricing across every city we cover. If you're in a Lewisville-adjacent neighborhood, these pages have local details for your ZIP.
Deeper context on heating replacement written by Omar Jacobo (EPA 608 #2396328).
Depends on your setup. If you have Atmos Energy natural gas service (most Lewisville homes do), a 96% AFUE two-stage furnace is typically cheapest to operate across Denton County's 20-30 freeze nights. All-electric Castle Hills and Vista Ridge builds without gas service do well with a variable-speed heat pump that may qualify for federal tax credits. I run both numbers on every estimate.
Full system replacement: Stay Cool (Goodman 15 SEER2) $8,000-$14,000, Stay Frosty (Carrier 18 SEER2) $12,000-$18,000, It's A Frosty Life (Trane 20+ SEER2) $16,000-$20,000+. Heat pump adds $2,000; 10-year labor warranty adds $3,500. Castle Hills larger homes typically land at the higher end of each range due to tonnage requirements.
We run a Manual J load calculation on every replacement — Lewisville's housing stock varies too much to guess. Old Town 1,500-2,000 sqft ranches typically need 60,000-80,000 BTU furnaces. Valley Vista 2,000-3,000 sqft homes run 80,000-100,000 BTU. Castle Hills 3,000-5,000 sqft homes need 100,000-120,000+ BTU. Oversizing causes short cycling and humidity problems — a real issue near Lewisville Lake.
Gas furnaces: 15-20 years with annual maintenance. Heat pumps: 12-15 years because they run year-round (both heating and cooling). Two-stage and variable-speed equipment tends to last longer than single-stage because it cycles less aggressively. Frosty Club Premium ($300/yr) includes 2 tune-ups that extend equipment life significantly.
Yes — we pull a City of Lewisville permit on every gas furnace or heat pump replacement. The inspector typically comes out within 2-3 weeks. Permit fees are included in the flat-rate quote. Unpermitted work fails at resale inspection and can void equipment warranties — Castle Hills HOA resale requirements make this especially important.
Free in-home estimate. Flat-rate pricing. $0 down financing on approved credit. Installation typically within 1-2 weeks.
Written by Omar Jacobo, EPA 608 Universal Certified Lead Technician at Frosty's HVAC LLC. Licensed TACLA126718E. Frosty Club Basic $99/yr · Premium $300/yr.
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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