AC Installation in Dunwoody - One Written Price, Rebates Handled

Fast, Reliable AC Installation Across Dunwoody

AC installation in Dunwoody typically costs $3,500-$7,500 for a full system replacement, including load calculation, equipment, and commissioning. Most Dunwoody homeowners schedule the work over one to two days, with a written fixed price delivered before any equipment arrives. Call (817) 402-2972 for a free estimate with no obligation.

Call (817) 402-2972

We’ve been dispatching crews to Dunwoody from our Atlanta office since 2003, and we know the local housing stock cold: two-story traditionals and split-levels from the 1970s through early 1990s, most with flex duct systems baking in unconditioned attics and outdoor condensers buried under oak and sweet gum canopy. That specific combination - aging ductwork, floor-to-floor imbalance, and debris-packed coils - is what separates a proper Dunwoody installation from a swap-out that looks good on paper and disappoints by July. Our AC Installation team handles everything from single-zone replacements to full multi-system designs for larger homes around Dunwoody Club Forest and Georgetown.

Why Coldharbour Heating & Air Is Dunwoody’s Preferred AC Installation Company

We’re independently owned and operated as part of the Kingswell network, which means we follow The Kingswell Way: say the price before the work starts, show up in the window given, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. That structure matters in Dunwoody, where homeowners have dealt with enough no-shows and handshake promises.

Our technicians are background-checked, uniformed, and trained on nine major residential brands - Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. When we pull up to a Dunwoody home, we’re carrying parts and knowledge for whatever system is already in place, not just the brands we prefer to sell.

Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail trees, no after-hours runaround. If you’re calling about AC installation in Dunwoody, you’ll speak to someone who can book your free estimate or answer a scheduling question right then.

Every repair we perform carries our 365-Day Done Right Promise: a written guarantee, valid for a full year. If the repair fails in that window, we return and correct the work at no additional charge. That’s not an upgrade or a special promotion. It’s on every job.

Ductless Mini Split Installation in Dunwoody

Ductless Mini Split Installation in Dunwoody gives homeowners a way to cool spaces the original duct system never reached - finished attics, room additions over garages, converted basements, or that one upstairs bedroom that stays 6°F warmer than the rest of the house. A single-zone system, including line-hide along the exterior wall and proper drain routing, runs $3,500-$7,500 in the Dunwoody market. The indoor unit mounts high on the wall, the outdoor condenser sits on a small pad, and refrigerant lines run between them through a 3-inch hole. No ductwork required.

When Ductless Makes Sense

Dunwoody’s housing stock creates perfect conditions for mini splits. The split-levels along Peeler Road and the two-story traditionals in Dunwoody Club Forest often have one zone serving two floors through flex duct that was marginal in 1985 and is disintegrating now. Rather than tear open walls to add trunk lines, a mini split gives independent temperature control to the problem space. We’ve installed them for home offices, in-law suites, and bonus rooms over garages where the existing system simply can’t push enough conditioned air.

Humidity Control in Georgia Summers

Here’s what the box-store flyers don’t tell you: a mini split that is oversized for the space will cool it fast and leave it clammy. Dunwoody’s dew points exceed 70°F for months every summer. We size every mini split to a room-by-room load calculation, then set the blower to a lower speed for dehumidification. The result is a room that actually feels comfortable, not just cold and wet.

AC Replacement in Dunwoody

AC Replacement in Dunwoody is rarely as simple as swapping a condenser on the pad. Most homes in Georgetown, Dunwoody Club Forest, and the neighborhoods around Dunwoody Village carry 40-to-55-year-old flex duct through attics that hit 140°F in August. Putting new equipment on that infrastructure is like bolting a new engine into a car with rusted fuel lines. The new unit runs, but it never performs. A full AC replacement - condenser, evaporator coil, lineset, load calculation, and commissioning - runs $3,500-$7,500 in Dunwoody. What separates that investment from a disappointment is whether the installer addresses the duct system, the zoning, and the outdoor coil environment.

The Load Calculation Question

We get this constantly: “Can’t you just match the old tonnage?” The old unit was probably sized by a builder in 1987 who used a rule of thumb. Your home may have new windows, added insulation, or a finished basement that changes the math. We run a Manual J load calculation on every replacement. For Dunwoody’s two-story and split-level homes, that calculation almost always reveals the old unit was oversized, which caused short-cycling, humidity problems, and premature failure. We size to the calculation, not the label on the rusted box outside.

Duct Replacement and Zoning Retrofits

In Dunwoody Club Forest, our crew replaced a 1970s-era single-zone Trane system in a two-story traditional where the upstairs bedrooms ran 6°F warmer than the first floor all summer; we performed a room-by-room load calculation, dropped the attic flex duct for a sealed hard-pipe trunk, added a variable-speed air handler with a bypass dehumidifier, and re-wired the Carrier condenser for two cooling stages. After commissioning with static pressure readings and thermostat calibration on a 72°F design day, the second-floor sensors held within 1°F of setpoint and the outdoor unit - which had been packed with sweet gum seed pods - was pulled, cleaned, and re-set on a 12-inch pad clear of the canopy.

Trusted Brands We Service in Dunwoody

Our technicians carry training and parts for nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Dunwoody homeowners, that means faster turnaround when a part is needed and no pressure to switch brands just because our truck doesn’t stock the right coil or control board. We work with Rheem and York systems regularly in the Dunwoody market - both brands have strong distribution through metro Atlanta suppliers - and we’ve found Daikin and Bryant equipment performs well in the high-humidity, debris-heavy conditions that define this area. If your current system is one of these brands, we can likely source replacement components same-day or next-day from our Atlanta-area suppliers.

Common AC Installation Problems We See in Dunwoody Homes

• New equipment on old flex duct. That 1970s flex duct in your hot Dunwoody attic has probably sagged, torn at the seams, or collapsed entirely in spots. Install a new air handler and it will push conditioned air into the insulation instead of the bedrooms. We measure static pressure before we quote, and we tell you honestly if the duct needs replacement.
• Floor-to-floor temperature imbalance. Dunwoody’s split-levels and two-story traditionals were built with single-zone systems. A replacement sized to the old tonnage leaves the upstairs hot and the downstairs overcooled. We address this with zoning, variable-speed equipment, or duct redesign - not just a bigger unit.
• Tree-packed condenser coils. Dunwoody’s aggressive tree-preservation ordinance - the issue that drove incorporation in 2008 - leaves outdoor units under dense oak, sweet gum, and tulip poplar canopy. That debris kills airflow, raises head pressure, and shortens compressor life. We clean and relocate or raise pads as part of installation, not as a follow-up call.
• Skipped commissioning on complex systems. A multi-zone installation in a large Dunwoody home needs refrigerant charge verification, blower motor airflow setup per zone, thermostat calibration, and dehumidification sequence testing. Skip any of that and the house stays clammy and uneven despite the new equipment.

Pricing for AC Installation in Dunwoody, GA

We Also Serve Cities Near Dunwoody

Our crews work throughout metro Atlanta from our local dispatch office. If you’re outside Dunwoody city limits, we also provide AC Installation in Dunwoody and surrounding communities including Atlanta, South Fulton, Sandy Springs, and Roswell. Scheduling and routing are coordinated to keep arrival windows firm no matter which city we’re headed to.

FAQs About AC Installation in Dunwoody