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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AfterHVAC Company in Lilburn, GA
Most HVAC calls we get from Lilburn involve homes built during Gwinnett County’s first suburban wave, with systems and ductwork now hitting 35 to 50 years of age. Coldharbour Heating & Air handles AC repair, furnace repair, and AC installation here with technicians trained on nine major brands and pricing put in writing before any work starts. If you need help today, call us at (817) 402-2972 and a live person will pick up, 24 hours a day.
Why Lilburn Homes Are Different
Lilburn’s core neighborhoods went up fast between roughly 1972 and 1990, and that timing matters for the work we do. Most houses are 1,400 to 2,200 square foot ranch and split-level homes with crawl-space duct systems that have sagged, disconnected at joints, or lost insulation value after decades of humidity exposure. The Yellow River watershed running through and around Lilburn keeps soil moisture and ambient humidity higher than on the drier suburban plateaus to the north, so crawl-space moisture wicks into ductwork and air handlers, accelerating coil corrosion and mold growth.
In Old Town Lilburn and the adjacent Yellow River-area subdivisions, we regularly find original 1970s systems that have been patched or re-routed by non-permitted work over the years. That leaves hybrid mixes of rigid and flex duct that create static-pressure imbalances, so rooms on the far end of long, low-slope runs chronically under-cool in July no matter how new the air handler is. Load calculations here need to account for that dehumidification burden, which is meaningfully different from drier parts of Gwinnett County like Buford or Duluth. A second tier of 1990s two-story colonials added during the county’s second growth wave now faces aging R-22 equipment nearing forced retirement, so Lilburn is effectively working through a replacement wave that neighboring cities with different build-out timing are not facing at the same scale.
Our Main Lilburn Services
These are the three services Lilburn homeowners call us about most often. Each has its own dedicated page with full details on pricing, common problems, and what to expect.
AC Repair in Lilburn
AC repair calls in Lilburn usually involve refrigerant leaks from corroded evaporator coils, failed capacitors in aging outdoor units, or airflow restrictions from collapsed flex duct in crawl spaces. Because so many systems here are original or once-replaced single-stage units, we also see a lot of compressor strain during the humid peak months of July and August. Our technicians carry common parts for Rheem, York, and Bryant systems, and most repairs are completed same day. AC Repair in Lilburn covers typical costs, response times, and what our 365-Day Done Right Promise means for cooling work.
Furnace Repair in Lilburn
Furnace repair in Lilburn often means addressing cracked heat exchangers in 20-plus-year-old gas furnaces, failed igniters, or blower motors straining against restricted return airflow from degraded ductwork. The crawl-space moisture that affects cooling systems here also rusts furnace cabinets and corrodes burner assemblies over time. We check combustion safety on every call, and we’ll show you the written price before any part gets ordered. Furnace Repair in Lilburn explains what repairs cost, how we handle no-heat emergencies, and when replacement makes more sense.
AC Installation in Lilburn
AC installation in Lilburn requires more than swapping boxes. The ductwork in these 1970s and 1980s homes often needs sealing, repair, or partial replacement to handle modern variable-speed equipment properly. We run Manual J load calculations that factor in the local humidity corridor, size equipment correctly for the actual house, and give you a written fixed price that includes all labor, materials, and disposal. AC Installation in Lilburn covers system options, timeline, and how we handle the rebate and financing paperwork.
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 Lilburn
Our technicians are trained to service and repair Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard equipment. We stock common capacitors, contactors, igniters, and blower motors for Rheem, York, and Bryant systems locally, which keeps most repair calls to a single visit. Our brands page has the full list.
Pricing for HVAC Company in Lilburn, GA
| Service | Typical range in Lilburn |
|---|---|
| AC Repair | $150-$650 |
| Furnace Repair | $150-$700 |
| AC Installation | $3,500-$7,500 |
| Tune-Up | $80-$200 |
What pushes prices toward the higher end in Lilburn: degraded flex duct that needs repair or replacement before equipment will perform correctly, corroded coils from years of crawl-space humidity exposure, and access limitations in tight crawl spaces common to the 1970s ranch stock. Whatever the scope, you get the written price before we start, and that number does not change at the door. That’s The Kingswell Way, not a case-by-case policy.
Neighborhoods We Serve in Lilburn
We run calls across Lilburn’s full residential footprint, from the original ranch neighborhoods near Main Street to the 1990s subdivisions off Lawrenceville Highway. Most appointments are scheduled within a two-hour arrival window, and emergency calls are dispatched from our Atlanta office with crews already in Gwinnett County.
- Old Town Lilburn
- Yellow River-area subdivisions
- Lawrenceville Highway corridor
- Killian Hill area
- Rockbridge Road corridor
Service Area – Cities Near Lilburn
Our crews work throughout Gwinnett County and into neighboring areas. If you’re just outside Lilburn city limits, we also serve Snellville, GA, Lawrenceville, GA, Grayson, GA, and Buford, GA with the same written pricing and 365-Day Done Right Promise on every repair.
Serving Lilburn, GA - Our Local Coverage Area
We’re based in the Lilburn 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 Lilburn
We typically schedule same-day appointments for no-heat and no-cooling emergencies in Lilburn, with arrival windows given in writing when you call. Our dispatch operates from the Atlanta office, so Gwinnett County calls route to crews already in the area. Call (817) 402-2972 anytime, day or night, and a live person answers.
Yes, Gwinnett County requires permits for full system replacements in Lilburn, and we handle that paperwork as part of the installation process. For repairs that don’t alter equipment location or capacity, permits usually aren’t required. We’ll tell you exactly which category your job falls into before any work begins.
We serve all of Lilburn and the surrounding unincorporated Gwinnett County areas, not just the neighborhoods named above. If your home has a Lilburn address or is within a few miles of city limits, we’re your service area. Call (817) 402-2972 to confirm and book a free estimate.
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 Lilburn Customers Say
"The repair was done well and quickly. Scheduling over the phone was a little clunky and I got transferred twice, but the tech himself was great and on time."
- Brett Haygood"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
- Russ Tiedemann"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