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 estimateFast, Reliable AC Installation Across Mableton
A new AC system in Mableton typically runs $3,500 to $7,500 installed, depending on home size, ductwork condition, and whether you need a heat pump or traditional central air. We schedule installations within days, not weeks, and every job starts with a written price before any work begins. Call (762) 240-5599 for a free estimate and you’ll talk to a live person, not a voicemail tree.
We know the roads here. Veterans Memorial, Floyd Road, the neighborhoods tucked off Mableton Parkway. Our crews work in Mableton every week, so we understand what these homes throw at an HVAC system. Older ductwork, high humidity, exposed lots with no wind break. That’s not generic installer talk. That’s what we see when we pull old condensers out of Mableton backyards.
Why Cold Harbour Heating and Air Marietta Is Mableton’s Preferred AC Installation Company
Victor Mancini leads our team, and he built Cold Harbour around a simple idea: put it in writing. The Kingswell Way means five things on every job. 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 on paper. Come back if it fails. That’s not marketing copy. That’s how we’ve operated since 2003 as an independently owned and operated member of the Kingswell network.
Our installation crews are background-checked and uniformed. You know exactly who’s walking through your door. They’re trained on nine major residential brands, so whether your Mableton home has a Trane, Rheem, or Goodman already running, we can match the new system to what’s there. And every repair we make, including any follow-up work on a new install, carries the 365-Day Done Right Promise in writing. If it fails within a year, we come back and fix it at no charge.
AC Installation is our core trade, and we treat Mableton like the distinct market it is. Dispatch is coordinated from our Atlanta office, but the crews live and work here in Cobb County. That means a real person answers the phone around the clock, and your technician shows up with the right parts the first trip.
Styles & brands we work with
Furnace Installation in Mableton
Furnace Installation in Mableton usually means replacing a gas furnace in a 1970s to 1990s home where the original unit finally gave out, or switching a propane or electric setup to a more efficient option. Furnace repair in Mableton runs $150 to $700 when a fix still makes sense, but a full furnace installation often lands in the $3,500 to $7,500 range when paired with a matching AC system. If your furnace is over 15 years old and the heat exchanger is cracked, replacement is the honest recommendation, not a sales pitch.
Propane and No-Gas Loads
Parts of Mableton, especially on larger lots off Floyd Road and toward the county line, don’t have natural gas service. Those homes run propane or all-electric. A heat pump paired with a propane furnace as backup handles both the muggy summers and the occasional cold snap without forcing you to bury a gas line that isn’t coming. We size these systems with a load calculation that accounts for your home’s exposure, not a rule-of-thumb guess.
Duct-Aware Furnace Replacement
An old Mableton home with original flex duct in the attic needs the ductwork checked before a new furnace goes in. Undersized returns and kinked flex are everywhere in this housing stock, and a new high-efficiency furnace will choke on the same airflow problems that wore out the old one. We include a static pressure test and fix transitions before we commission the system.
HVAC Installation in Mableton
HVAC Installation in Mableton means installing both the heating and cooling sides as a matched system, which is what most of these older homes need. Furnace repair in Mableton might buy you one more season, but when the AC is also original and the refrigerant is R-22, replacing both at once is usually cheaper long-term than staging them. A full HVAC installation in Mableton typically runs $3,500 to $7,500 depending on equipment, duct modifications, and home square footage.
Full System, One Match
A matched HVAC system means the furnace, coil, and condenser are designed to work together. Mismatched systems are common in older Mableton homes where a previous owner swapped just the condenser. That costs efficiency and shortens equipment life. We install matched systems so the SEER2 rating on the label actually happens in your house.
Older Home Duct Corrections
Slab-on-grade homes off Mableton Parkway often have supply plenums that sweat, and without proper condensate drainage the secondary pan overflows into the closet or hallway. We replace pan switches, upgrade condensate pumps, and add proper drain lines on every install where it’s needed. Duct modification for correct static pressure runs $800 to $1,800, and it’s the difference between a system that lasts 8 years and one that lasts 15.
Trusted Brands We Service in Mableton
We install and service Trane, Lennox, Goodman, and Rheem, plus five other major brands. For Mableton customers, that matters because we can match a new system to whatever your old one was without ripping out perfectly good line sets or re-running a pad. We keep common parts on the truck for these brands, so a follow-up visit doesn’t turn into two weeks of waiting on a distributor. If you already know which brand you trust, we’ll quote it. If you don’t, we’ll recommend based on your home’s ductwork and your budget, not a spiff from a manufacturer.
See the difference
Before
After
Before
After
Before
AfterCommon AC Installation Problems We See in Mableton Homes
- Original R-22 systems with corroded evaporator coils. In older neighborhoods off Floyd Road and Veterans Memorial, years of high indoor humidity and zero maintenance history have eaten through coils. R-22 is phased out, so the smart move is replacement, not a recharge.
- Undersized returns in 1970s-1990s attics. Flex duct that was undersized the day it was installed now has kinks and sags. A new high-SEER2 unit on that ductwork will fail the compressor early. We add returns and fix transitions so the system breathes.
- Condensate drainage failures on slab-on-grade homes. Without proper slope and a secondary drain pan, overflow ends up in the supply plenum and mold follows. We upgrade pumps and pans on these installs, usually $250 to $600.
- Exposed rural lots with no wind shelter. Properties on the south end of Mableton with no tree line push heat pump defrost cycles harder. Condenser coils corrode faster. We recommend coastal-coated coils on these installs and position the unit away from prevailing wind where the lot allows.
Pricing for AC Installation in Mableton, GA
A central AC or heat pump installation in Mableton runs $3,500 to $7,500 for most homes. That’s the honest range, and it includes equipment, labor, and the refrigerant charge. The variables are real: home size, ductwork condition, whether you need a heat pump versus straight AC, and any electrical or plumbing upgrades. We hand you a written price before any work begins, and it doesn’t change at the door. Here’s what specific line items look like:
| Service | Price Range |
|---|---|
| Heat pump AC installation (rural/no-gas load, 2 – 3 ton) | $4,200 – $6,500 |
| Duct modification for proper static pressure (add return/transition) | $800 – $1,800 |
| Condensate pump and secondary drain pan upgrade | $250 – $600 |
Call (762) 240-5599 for a free estimate. We’ll send a technician to your Mableton home, do a load calculation, and give you a number in writing. No pressure, no same-day scare tactics. Just the real price.
We Also Serve Cities Near Mableton
Our crews cover Mableton and the surrounding Cobb County area, including Smyrna, Powder Springs, Marietta, and Kennesaw. If you’re on the edge of Mableton and the phone picks up, you’re in our service area. Learn more about AC Installation in Mableton or call us directly for a free estimate.
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 AC Installation in Mableton
Yes, in most cases. A heat pump handles both cooling and heating, which matters when your Mableton home runs on propane or all-electric. Propane heat is expensive, and a heat pump gets you through all but the coldest nights without burning a tank. For the handful of nights a year when temperatures drop below freezing, a heat pump with electric strip backup or a dual-fuel setup with a small propane furnace covers you. Call (762) 240-5599 and we’ll tell you what fits your specific lot and square footage.
Most 1990s ductwork in Mableton can’t, not without correction. Original flex duct was often undersized, and after 30 years it has sags, kinks, and leaks. We run a static pressure test before we quote any system. If the numbers are off, we add a return or fix transitions, which runs $800 to $1,800. Skipping that step voids the equipment warranty and kills compressors early. We won’t install a new AC on bad ductwork. It’s the honest call.
Mableton’s humidity sits heavier than in-town Atlanta, especially in the older neighborhoods off Veterans Memorial where homes are slab-on-grade and don’t breathe as well. High indoor humidity, combined with original R-22 systems running past their design life, causes evaporator coils to corrode and leak. Atlanta homes get more of a mixed load. Mableton homes run the AC harder and longer through muggy summer nights. That’s why we see coil rot here earlier. A proper load calculation and dehumidification-friendly sizing helps a new system handle it.
Yes, we do outbuilding and workshop installs all over Mableton’s larger lots. That could be a mini split, a small central system, or a ducted unit if the shop is built out. We need to check the panel capacity and the distance from the main house before we quote. Call (762) 240-5599 and we’ll send someone out to measure and give you a written price. No charge for the estimate.
SEER2 is the updated efficiency rating that accounts for real-world duct pressure and humidity, which matters in Mableton because our summers are muggy and our ductwork is often old. An old SEER 16 unit might only hit SEER2 14.5 on your ductwork. When you see “high efficiency” on a quote, ask for the SEER2 number and whether the installer verified your static pressure. We do, because without that test the efficiency number is just a sticker. For an exact quote on a Mableton install, call (762) 240-5599.
Written by Victor Mancini, Owner at Cold Harbour Heating and Air Marietta, serving Mableton since 2003.