Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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Most HVAC calls we get from Lewisville aren’t routine tune-ups. They’re urgent repairs on aging systems pushed past their limits by lake-edge humidity and attic heat that hits 140°F in July. Coldharbour Heating & Air dispatches technicians trained on Trane, Lennox, Goodman, and Rheem systems to Lewisville homes from our Dallas-Fort Worth scheduling office, and we answer the phone live at (817) 402-2972 every hour of every day. Our written price comes before any work starts, and every repair carries our 365-Day Done Right Promise on paper.
Why Lewisville Homes Are Different
Lewisville sits in a rare spot for a DFW suburb: pressed right against a 29,000-acre reservoir. That lake proximity keeps ambient humidity higher than in landlocked Carrollton or Flower Mound, which means residential HVAC systems here work harder on latent load (moisture removal) than sensible cooling alone. The result is accelerated corrosion on evaporator coils, condensate drains that back up during summer humidity spikes, and outdoor condensers that labor longer to reach set temperature.
The housing stock compounds this. Lewisville’s dominant building era was the 1980s and 1990s I-35E suburban surge: slab-on-grade ranch and two-story homes with flex duct routed through unconditioned attics. Many still run original undersized ductwork, aging air handlers, and pre-2010 R-22 condensing units now at end-of-life. In neighborhoods near the lake’s south and west shoreline, we regularly see late-1990s coils fouled years ahead of schedule. The February 2021 ice storm froze condensate lines and knocked out heat pumps across the city, exposing how many systems were already marginal.
Our Main Lewisville Services
These are the three calls we field most often from Lewisville homeowners, each with its own dedicated page and local pricing.
AC Repair in Lewisville
Summer AC failures in Lewisville usually trace to one of three patterns: low refrigerant from a leak in corroded copper lines, a frozen evaporator coil from restricted airflow through aging flex duct, or an overwhelmed condensate drain line backed up by lake-area humidity. Our technicians carry common capacitors, contactors, and refrigerant to restore cooling the same day when possible. Every repair gets a written price upfront and our 365-Day Done Right Promise before we leave. AC Repair in Lewisville
Furnace Repair in Lewisville
Lewisville furnace calls spike after ice events and during the first cold snap in November, when heat exchangers on 20-plus-year-old systems crack under thermal stress and igniters fail on units that haven’t run since March. We check gas pressure, flame sensor operation, and heat exchanger integrity on every no-heat call. If we repair it, the guarantee is written and dated. Furnace Repair in Lewisville
AC Installation in Lewisville
Replacement demand in Lewisville is driven by R-22 equipment phaseout and failed coils in lake-humidity zones. We size every system to the home’s actual load, not the original builder’s spec, and we handle permitting and rebate paperwork. Installations are scheduled, not same-day, with a fixed written price that includes disposal of the old unit. AC Installation in Lewisville
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Lewisville
Our technicians are trained to diagnose and repair Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard residential systems. We stock common capacitors, contactors, and igniters for Trane, Lennox, Goodman, and Rheem units locally, which keeps most Lewisville repair calls to a single visit. our brands
Pricing for HVAC Company in Lewisville, TX
| Service | Typical range in Lewisville |
|---|---|
| AC Repair | $150-$650 |
| Furnace Repair | $150-$700 |
| AC Installation | $3,500-$7,500 |
| Tune-Up | $80-$200 |
What pushes Lewisville jobs toward the higher end: corroded coil replacement on lake-proximity homes, ductwork modifications in 1980s-era attics with limited access, and refrigerant line-set replacements on slab-on-grade homes where lines run through concrete. The written price we hand you before any work begins is the price you pay. That’s The Kingswell Way, not a promotion.
Neighborhoods We Serve in Lewisville
We run calls across the full Lewisville city limit, from the older established sections near Main Street to the newer builds north of FM 407. Most Lewisville neighborhoods are within a 30-minute dispatch window during business hours.
- Castle Hills
- Vista Ridge Estates
- Valley Vista
- Lewisville Valley
- Old Town Lewisville
Service Area – Cities Near Lewisville
Our crews cover Lewisville and the surrounding lake-country suburbs from our Dallas-Fort Worth dispatch office. We also run regular calls to Lake Dallas, TX, Coppell, TX, The Colony, TX, and Flower Mound, TX. If you’re unsure whether your address falls in our service area, call us and we’ll confirm while you’re on the line.
Serving Lewisville, TX - Our Local Coverage Area
We’re based in the Lewisville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Lewisville
Most Lewisville repair calls are scheduled same-day or next-day, with emergency no-heat and no-cooling calls prioritized. Our live dispatchers answer 24 hours a day at (817) 402-2972 to set your appointment and give you a firm arrival window.
Some Lewisville neighborhoods, particularly in Castle Hills and Vista Ridge, have HOA guidelines for outdoor unit placement and fence-line setbacks. We handle the details with the homeowner during scheduling; our technicians do not start work until any required HOA or city permit is confirmed.
The price range is the same across Lewisville, but lake-proximity homes often need more extensive coil or drain line work due to humidity corrosion. We diagnose on-site and give you the exact written price before any repair begins, regardless of neighborhood.
Call Coldharbour Heating & Air at (817) 402-2972 for a free estimate. A live person will answer, day or night, and we’ll give you a firm arrival window and a written price before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Lewisville Customers Say
"Thermostat and a weak blower. Fixed both in one visit, explained the guarantee, and didn't leave a mess. I've already recommended them to my neighbor."
- Natalie Esposito"Honest to a fault. Two companies told me I needed a whole new unit. Coldharbour said mine had years left and just needed a cleaning and a part. Saved me thousands."
- Marcus Reilly"Furnace wouldn't light the first cold morning. The guy walked me through what he was checking so I actually understood it. Replaced the igniter, wrote up the warranty, and it's been warm since."
- Alicia Romero