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.
Before
After
Before
After
Before
AfterFast, Reliable AC Installation Across Lewisville
A new AC installation in Lewisville typically runs $3,500-$7,500, and most systems are scheduled within a few days of your free estimate. Our AC Installation team knows the lake-edge humidity on the south and west sides of Lewisville strains equipment harder than inland DFW suburbs, so we size every replacement to pull moisture out of the air, not just drop the temperature.
We answer the phone live, 24 hours a day, at (817) 402-2972. Dispatch and scheduling are coordinated from our Seattle office, and crews serve Lewisville neighborhoods directly. Most homeowners who call Monday have a written fixed-price proposal by Tuesday and a firm install date on the calendar within the week. We do not change the price at the door. The Kingswell Way means we say the price before the work starts, show up in the window we give you, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails.
Why Coldharbour Heating & Air Is Lewisville’s Preferred AC Installation Company
Coldharbour Heating & Air has been part of the Kingswell network since 2003, independently owned and operated with standards that do not vary by neighborhood. We have replaced hundreds of systems in Lewisville’s 1980s and 1990s ranch and two-story subdivisions, and our technicians have walked enough attics here to know which builders ran flex duct tight, which slab-on-grade layouts starve upstairs returns, and where the lake humidity hits hardest.
Our reviews from Lewisville customers consistently mention the written price, the on-time arrival window, and the 365-Day Done Right Promise. We do not ask you to trust a handshake. Every repair comes with a written guarantee valid for a full year, and if the repair fails in that window, we return and correct the work at no charge. Background-checked, uniformed technicians arrive in marked vehicles, trained on nine major residential HVAC brands including Trane, Lennox, Goodman, and Rheem.
Response time to Lewisville is typically same-day for repair calls and within a few business days for full system replacements. Replacement work is load-calculated, ordered, and scheduled, not rushed. You get a written fixed price, a set install date, and we handle rebate and financing paperwork if it applies.
Furnace Installation in Lewisville
Furnace Installation in Lewisville addresses the other half of a year that still punishes North Texas equipment. The February 2021 ice storm froze heat pumps and condensate lines across the city, and many homeowners with aging gas furnaces discovered their heat exchangers had cracked after decades of cycling on and off in unconditioned attics. A new furnace installation pairs with your AC system or stands alone, and our crews size it to the same Manual J load calculation we run for cooling, because a furnace that is too large short-cycles, wastes fuel, and leaves rooms cold near the ducts.
When to Replace Instead of Repair
If your furnace is past fifteen years, requires repeated ignition or blower repairs, or the heat exchanger shows corrosion or cracking, replacement is the safer bet. We do not patch heat exchangers. A cracked exchanger can introduce carbon monoxide into the supply air, and our policy is to shut the system down and quote replacement.
What a New Furnace Costs
Most furnace installations in Lewisville fall inside the broader HVAC installation range of $3,500-$7,500, depending on whether you are pairing with a new AC condenser, converting from heat pump to gas, or replacing the furnace alone. We give you a written price before any work begins, and that price does not change.
HVAC Installation in Lewisville
HVAC Installation in Lewisville means the full system: outdoor condensing unit, indoor evaporator coil, air handler or furnace, and the ductwork that connects them. Most of the calls we run here are not simple swap-outs. The 1980s and 1990s building boom left thousands of slab-on-grade homes with original flex duct baking in attics that hit 140°F in July, and many of those systems were sized by rule of thumb rather than actual load calculation. We treat every HVAC installation as a chance to fix what the builder got wrong.
Load Calculation Before Equipment Selection
We run a room-by-room Manual J load calculation on every replacement. The old unit’s tonnage is a starting point, not gospel. Lake humidity on Lewisville’s south and west sides adds latent load that a simple square-footage estimate misses. Oversized equipment cools fast but runs too briefly to dehumidify, leaving you cold and clammy.
Ductwork Assessment and Correction
We inspect your existing flex duct for kinks, collapses, and undersizing that creates high static pressure. Starving a new coil of airflow is the fastest way to kill it. If the ductwork is failing, we tell you before the install date, not after.
Trusted Brands We Service in Lewisville
Our technicians are trained to service and install nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Lewisville customers, we stock common parts for Trane, Lennox, Goodman, and Rheem systems locally, which means faster turnaround when a coil or blower motor fails under warranty. We do not push one brand over another. The right equipment depends on your home’s load, your ductwork, and your budget. We explain the efficiency ratings in plain English, help you navigate manufacturer rebates, and file the warranty registration paperwork so you are actually covered if something fails two summers from now.
Common AC Installation Problems We See in Lewisville Homes
- Oversized replacement units short-cycling through humid summers. The original builder sized by square footage rule of thumb, and the replacement contractor matched that tonnage without running a load calculation. The new system hits 72°F in ten minutes, shuts off, and never runs long enough to pull the lake moisture out of the air.
- Warranty registration never filed, coverage denied later. The homeowner has a failed evaporator coil at twenty-six months and learns the parts warranty was never activated. Labor and corrosion damage are excluded anyway. We file registration on every install and explain exactly what the manufacturer covers and what it does not.
- Original flex duct left in place, killing the new coil. A 140°F attic has baked the old flex duct flat or torn it at the plenum. The new condenser starves for airflow, head pressure spikes, and the homeowner’s zoning complaints from the old system follow the new box home.
- Lake-edge corrosion eating evaporator coils and drain pans early. On the south and west sides of Lewisville, near the shoreline parks and marina corridor, we regularly find late-1990s systems with coils corroded through and drain pans overflowing. The humidity load is simply higher here than in landlocked Denton County neighborhoods a few miles east.
Pricing for AC Installation in Lewisville, WA
Most full AC installations in Lewisville run $3,500-$7,500, including equipment, labor, refrigerant charge, and basic electrical connection. What moves you within that range: system tonnage, SEER2 efficiency rating, whether the install is a straightforward swap or requires ductwork modification, and whether you are adding a heat pump or staying with straight cool. We do not give ballpark numbers over the phone that change at the door. A technician visits your home, measures the space, inspects the ductwork and electrical panel, and hands you a written fixed price before any work is scheduled. Estimates are free. Call (817) 402-2972 to book yours.
| Service | Price Range in Lewisville |
|---|---|
| AC Installation | $3,500-$7,500 |
| Tune-Up | $80-$200 |
| AC Repair | $150-$650 |
Financing and utility rebate paperwork are handled in our office, not dumped on you to figure out.
We Also Serve Cities Near Lewisville
Our crews work AC Installation in Lewisville and surrounding North Texas communities including Seattle, Spokane, Tacoma, and Vancouver. Scheduling and dispatch run through our Seattle office, with local technicians assigned to your area for faster response and familiarity with regional building stock and code requirements.
Serving Lewisville, WA - 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 AC Installation in Lewisville
The 29,000-acre Lewisville Lake elevates ambient relative humidity on the south and west sides of the city above what landlocked suburbs like Carrollton or Flower Mound experience. That extra moisture condenses on evaporator coils and drain pans continuously during cooling season, accelerating galvanic corrosion and biofilm buildup. Systems sized only for temperature load, not latent load, run wet coils all summer. We size for both, and we specify coated coils and corrosion-resistant drain pans on lake-edge installs. Call (817) 402-2972 if your current system runs a full pan every summer.
Replace. R-22 refrigerant has been phased out of production since 2020, and reclaimed stocks are expensive and dwindling. A 1990s unit in Lewisville is also likely undersized for actual latent load, running original flex duct in a 140°F attic, and approaching or past its reliable service life. Repair costs on R-22 systems typically run $150-$650, but pouring that into equipment that cannot be recharged economically is a short-term fix to a long-term problem. We give free replacement estimates with written fixed pricing. Call (817) 402-2972.
You need the load calculation. The original builder probably sized by rule of thumb, and lake humidity on Lewisville’s south and west sides means a unit that “worked” in Carrollton can run a permanently wet coil here. Matching old tonnage risks oversizing, short-cycling, and failed dehumidification. We run Manual J on every replacement. It takes about an hour and costs nothing. Call (817) 402-2972 to schedule.
SEER2 is the updated efficiency standard that reflects real-world conditions, including higher external static pressure that mimics actual duct systems. A 14.3 SEER2 unit is the current federal minimum for split systems in the South. Higher SEER2 numbers mean lower electricity bills, but the payback period depends on your runtime hours and electric rates. In Lewisville’s long cooling season, a 16-17 SEER2 unit often makes sense for homes that run AC from May through October. We show you the math, not just the sticker.
The standard manufacturer parts warranty covers defects in materials and workmanship, typically five to ten years on the coil if registration is filed within the required window. It does not cover corrosion from environmental conditions, improper maintenance, or unregistered equipment. Labor to replace the coil is also excluded unless you purchase extended labor coverage. We file your registration, explain the exclusions in writing, and recommend coated coils for lake-edge Lewisville homes where humidity accelerates corrosion. Call (817) 402-2972 for specifics on any quote.
Written by Victor Mancini, Owner at Coldharbour Heating & Air, serving Lewisville since 2003.