Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateHVAC Company in Kennesaw, GA
Kennesaw keeps two different kinds of houses, and they need two different kinds of HVAC work. The newer subdivisions off Barrett Parkway and Stilesboro Road run high-efficiency systems in slab-on-grade homes with attic units. The older neighborhoods near downtown and along Cherokee Street still carry 1980s and 1990s equipment that was retrofitted into existing ductwork, often badly. Hot, humid summers run air conditioners hard here, and the tree cover that makes Kennesaw pleasant also drops pollen straight onto outdoor coils. We answer the phone around the clock at (762) 240-5599, and every repair we do here comes with a written 365-day guarantee.
Why Kennesaw Homes Are Different
Most Kennesaw homes sit on slab foundations, which pushes HVAC systems into attics or closets rather than basements. That matters in a hot attic: a system up there works harder, and duct leaks bleed cooled air into a 130-degree space before it ever reaches a bedroom. Homes in Legacy Park, in particular, often have original flex duct that has collapsed over time, which is why one side of the house stays comfortable while the other never quite catches up. We check duct condition on nearly every Kennesaw repair call because the fix is frequently not the unit itself.
The pollen is the second factor people forget until a unit stops cooling in May. Kennesaw’s dense tree cover produces a heavier pollen load than nearby cities, and it packs onto condenser coils fast. Filters that would last three months in Acworth might clog in six weeks here. A coil caked in pollen runs high head pressure, trips the compressor’s thermal limit, and shortens equipment life. That single fact explains a large share of the no-cooling calls we run between March and June.
Styles & brands we work with
Our Main Kennesaw Services
The two services Kennesaw homeowners call about most are AC repair in summer and furnace repair in the brief cold snaps that catch older systems off guard, with AC installation close behind when a failed system is no longer worth patching.
AC Repair in Kennesaw
When a Kennesaw home stops cooling in July, the cause is usually one of three things: a clogged pollen-filled coil, a capacitor that died in the heat, or low refrigerant from a slow leak. Our technicians carry capacitors, contactors, and fan motors on the truck, so the most common repairs happen same-day. Before any work begins, you get a written price that does not change at the door. Find the full breakdown on our AC Repair in Kennesaw page, including what we check first and how long most calls take.
Furnace Repair in Kennesaw
Kennesaw winters are mild enough that furnaces sit idle for months and then fail on the first genuinely cold morning. Igniters crack, flame sensors corrode, and blower motors seize after a long off-season. The older units near downtown and Cherokee Street are the ones we see most often, since their boards and gas valves are reaching the end of their natural life. We repair all major brands, and the repair is covered in writing for a full year. Details on Furnace Repair in Kennesaw, including the no-heat checklist we walk through on the phone.
AC Installation in Kennesaw
When a compressor fails on a 15-year-old system, replacing the whole unit often costs less over three years than repeated repairs. In Kennesaw, installation usually means attic or closet work on a slab home, which spaces the job differently than a basement install. We size the system with a load calculation rather than a guess, and we handle the duct modifications that older Kennesaw homes frequently need. You get a written fixed price and a set install date. See AC Installation in Kennesaw for pricing and what the process looks like.
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 Kennesaw
Our technicians work on Trane, Lennox, Goodman, Rheem, and the other major residential makes that dominate Kennesaw’s housing stock. We keep common parts for these brands stocked locally, which cuts the wait when a repair needs a specific board or motor. See our brands page for the full list and what we carry.
See the difference
Before
After
Before
After
Before
AfterPricing for HVAC Company in Kennesaw, GA
| Service | Typical range in Kennesaw |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Tune-up | $80 – $200 |
The spread on repair costs comes down to the part. A capacitor replacement sits near the bottom, while a compressor or blower motor pushes toward the top. Install cost in Kennesaw tracks home size and duct condition: a 2,000-square-foot slab home with tired flex ducts will land higher than a fresh subdivision build. Whatever the job, you get a written price before tools come out, and it stays the same from quote to final invoice.
Neighborhoods We Serve in Kennesaw
We run calls across Kennesaw daily, from the subdivisions off Barrett Parkway to the older streets near downtown. Most of our repair calls in the area are reached same-day, with emergency no-cooling calls prioritized during heat waves.
- Legacy Park
- Kennesaw Battlefield area
- Old Highway 41 corridor
- Summers Street / downtown Kennesaw
- Stilesboro Road subdivisions
Service Area – Cities Near Kennesaw
Besides Kennesaw, our crews cover the surrounding Cobb and Cherokee County communities. If you’re in Acworth, GA, Marietta, GA, Woodstock, GA, or Powder Springs, GA, the same written pricing and 365-day guarantee apply. Dispatch and scheduling are coordinated from our Atlanta office, with crews serving Kennesaw locally.
Serving Kennesaw, GA - Our Local Coverage Area
We’re based in the Kennesaw 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 Kennesaw
Most repair calls in Kennesaw are reached same-day when scheduled by early afternoon, and no-cooling calls during heat waves are prioritized. Around-the-clock live phone coverage means you’ll speak to a person, not a voicemail tree. Call (762) 240-5599 for today’s window.
Many Kennesaw subdivisions have architectural guidelines that apply to visible outdoor units, particularly for new installations. Condenser placement and even unit color can matter. We install to the community’s recorded standards and will tell you before any work starts if board approval looks likely.
Yes. The work differs, but our approach doesn’t: written price first, a firm arrival window, and a written 365-day guarantee on every repair. Attic systems on slab homes, collapsed flex duct in Legacy Park, and high-efficiency units in newer builds are all routine for us.
If your Kennesaw system is acting up, call (762) 240-5599 for a free estimate. Victor Mancini and the Coldharbour Heating & Air team will tell you the price before any work begins, and every repair carries our written 365-day guarantee.
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 Kennesaw Customers Say
"AC quit on the hottest day of the year of course. Coldharbour had a tech out that evening, found a bad capacitor, and had us cool again within the hour. Charged the quote, not a penny more."
- Doug Feeney"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"Signed up for a tune up before summer. He found a part starting to fail and showed me the reading, didn't just tell me to trust him. Fixed it then so we wouldn't get stuck in July."
- Sophia Tran