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 Mableton, GA
Mableton’s mix of 1970s-to-1990s single-family homes and newer townhome infill creates two very different HVAC workloads within the same ZIP codes. Older slab-on-grade and crawlspace houses fight Georgia humidity with aging ductwork, while newer builds off Veterans Memorial push high-efficiency units hard through long summers. Coldharbour Heating & Air handles both ends of that spectrum with written pricing and a 365-day repair guarantee. If you’re dealing with an HVAC issue in Mableton, call Coldharbour Heating & Air at (762) 240-5599 and a live person answers, day or night.
Why Mableton Homes Are Different
Mableton sits in unincorporated Cobb County, which means most homes here were built under county codes that predate Georgia’s stricter 2011 energy amendments. The housing stock skews heavily toward 1970s-through-1990s construction: slab-on-grade foundations, crawlspaces, and flex duct running through hot attics. That ductwork, thirty to fifty years old in many cases, was sized for systems that are now long past retirement. We regularly see homes off Floyd Road and Bankhead Highway where the original R-22 air conditioning unit is still in place, paired with duct runs that leak conditioned air into the attic before it ever reaches the bedrooms.
Humidity is the quiet problem here. Mableton’s humid subtropical climate means the air holds moisture almost year-round, and an air conditioner that isn’t removing enough of it leaves rooms feeling sticky even when the thermostat reads 72 degrees. In many older Mableton homes, the unit itself is oversized, which worsens dehumidification because the system short-cycles and never runs long enough to pull water out of the air. Combine that with undersized returns, common in this era of construction, and you get a system that works constantly and still can’t keep up. The fix is rarely just a repair; it’s correcting airflow and load sizing at the same time, which is why a proper diagnosis matters more in Mableton than in a newer, tighter suburb.
Newer subdivisions near the Silver Comet Trail, by contrast, were built tighter and more efficiently, but many have the opposite problem: high-efficiency heat pumps paired with undersized return ducts and restrictive filtration. We see premature compressor failures in those homes because the blower is starved for air. Different era, different failure mode, same outcome: a hot house in July. Knowing which type of Mableton home you’re in is half the diagnosis.
Styles & brands we work with
Our Main Mableton Services
Most calls we take in Mableton are for one of three things: an air conditioner that quit in the heat, a furnace acting up on a cold damp night, or a replacement system because the old one finally gave out. Each has its own Mableton page with full pricing and detail.
AC Repair in Mableton
When an air conditioner fails in Mableton in July or August, the humidity turns a comfort problem into a health issue fast. We diagnose the refrigerant circuit, electrical controls, and airflow before quoting anything, and the written price is on paper before we touch a tool. In older Mableton homes, the failure is often a corroded evaporator coil from years of high indoor humidity, or a refrigerant leak on an aging R-22 system. The good news: those problems are fixable, and we’ll tell you honestly if repair is the right call or if replacement makes more financial sense. Read the full scope on our AC Repair in Mableton page.
Furnace Repair in Mableton
Mableton winters are mild, but damp cold air makes a furnace failure more uncomfortable than the temperature would suggest. The most common call we answer between November and February is an igniter or flame sensor failure on an older gas furnace, and most igniter replacements run $150 – $280 with parts and labor included. Because many Mableton homes have furnaces tucked into cramped closets or crawlspaces, we quote the work by the conditions on-site, not by a flat-rate chart that surprises you at the end. Details and specific repair prices are on the Furnace Repair in Mableton page.
AC Installation in Mableton
Replacing an air conditioner in Mableton is rarely a straightforward swap. The old system may be the wrong size for the house, the ducts may be leaking, and the current code may require more than the original install ever had. We don’t promise same-day installation because a proper installation takes a load calculation, an equipment order, and a set install date. What we do promise is a written fixed price before you commit, so there’s no surprise line item on install day. The full process and pricing for Mableton homes is on our AC Installation in Mableton page.
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 Mableton
Our technicians are trained on nine major residential HVAC brands, including Trane, Lennox, and Goodman, so the unit already in your Mableton home is a unit we can work on. We stock common parts for Rheem and Trane systems locally, which shortens repair turnaround. See our brands for the full range.
See the difference
Before
After
Before
After
Before
AfterPricing for HVAC Company in Mableton, GA
Here are the price ranges we quote in Mableton. These include parts and labor and are written down before any work starts, so the number we hand you is the number you pay.
| Service | Typical range in Mableton |
|---|---|
| AC repair (diagnostic included) | $150 – $650 |
| Furnace repair | $150 – $700 |
| Furnace igniter replacement | $150 – $280 |
| AC installation (full system) | $3,500 – $7,500 |
| Seasonal tune-up | $80 – $200 |
What pushes a Mableton job toward the upper end? Usually age and access. A 30-year-old system with corroded coils, original ductwork that needs sealing, or a crawlspace furnace that’s hard to reach all add time and materials. Whatever the job, the price is fixed and written before the first tool comes out. That’s the whole point of The Kingswell Way: say the price before the work, show up in the window given, leave the place cleaner than found, put the guarantee in writing, and come back if it fails.
Neighborhoods We Serve in Mableton
We work across the full span of Mableton, from the older neighborhoods off Floyd Road and Veterans Memorial to the newer subdivisions near the Silver Comet Trail. Response time for a standard service call in Mableton is typically same-day when you call before noon, and emergency calls are answered by a live person around the clock.
- Homes off Floyd Road
- Neighborhoods along Veterans Memorial Highway
- Developments near the Silver Comet Trail
- Concord Road area
- Mableton Parkway corridor
Service Area – Cities Near Mableton
While this page focuses on Mableton, our crews also serve nearby communities with the same written pricing and guarantee. If you’re in Smyrna, GA, Powder Springs, GA, Marietta, GA, or Kennesaw, GA, the same team and the same 365-day guarantee apply.
Serving Mableton, GA - Our Local Coverage Area
We’re based in the Mableton 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 Mableton
Same-day service is common when you call before noon, and emergency calls are answered by a live person 24 hours a day, 7 days a week. We don’t route through voicemail or an answering service. For urgent AC or furnace failures, call (762) 240-5599 and we’ll give you a firm arrival window.
Mableton is unincorporated Cobb County, so HVAC permits follow county rules. For most AC or furnace repairs, no permit is required. Full system replacements and some electrical or gas line work typically do require a county permit, and we handle that paperwork as part of the installation. You won’t be left to figure it out on your own.
Yes. Many Mableton homes have flex duct runs that are 30 years old or more, with leaks and collapses that no new unit can overcome. We evaluate the ducts as part of any repair or replacement quote, because fixing airflow is often the difference between a system that works and one that just runs. If the ducts need work, that’s in the written price too.
Every repair carries the 365-Day Done Right Promise in writing. If the same repair fails within a full year, we return and correct it at no charge. No phone tag, no re-quote, no argument. That guarantee is part of the Kingswell Guarantee that Victor Mancini holds every Coldharbour Heating & Air job to, on paper, before our technician leaves your Mableton property.
Call Coldharbour Heating & Air at (762) 240-5599 for a free estimate on any HVAC job in Mableton. The estimate is written, the price is fixed, and the phone is answered by a person, not a menu.
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 Mableton 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