AC Installation in Norcross - One Written Price, Rebates Handled

Fast, Reliable AC Installation Across Norcross

A new AC installation in Norcross typically runs $3,500-$7,500 for a complete residential system, and most jobs are scheduled within a few business days after your free in-home estimate. Our AC Installation team works out of our Atlanta office and dispatches crews daily to Norcross neighborhoods, from the historic homes near Thrasher Park to the two-story colonials lining the Jimmy Carter Boulevard corridor. Call (817) 402-2972 to book a free estimate, and we’ll bring a written fixed price to your door before any work begins.

Call (817) 402-2972

We’ve been serving Gwinnett County since 2003, and Norcross keeps us busy for a reason. The city sits at a unique crossroads: pre-1930 Craftsman and Victorian homes in Old Town Norcross with no original duct infrastructure, and a massive wave of 1978-1995 builder-grade subdivisions whose attic-run duct systems are now 30-50 years old and failing in Georgia’s brutal summer heat. That split means no two AC installations in Norcross are the same, and cookie-cutter sizing by square footage is how homeowners end up with a new system that still can’t cool the upstairs.

Why Coldharbour Heating & Air Is Norcross’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 we promised, leave the place cleaner than we found it, put every guarantee in writing, and come back if it fails. Our 365-Day Done Right Promise covers every repair we perform, including Furnace Repair in Norcross. If a repair fails within a full year, we return and correct the work at no additional charge, and that guarantee is written down before our technician leaves your home.

Our technicians are background-checked, uniformed, and trained on nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. When you call (817) 402-2972, a live person answers the phone 24 hours a day, 7 days a week. No voicemail trees. No after-hours runaround.

We know Norcross’s housing stock intimately. The post-1978 Gwinnett boom subdivisions were nearly all built with attic-run duct systems sized by rule of thumb rather than a room-by-room load calculation, and because those attics hit 140°F+ every Georgia summer, the duct liner and insulation are now degrading faster than the equipment itself. A like-for-like AC swap here repeatedly underperforms a properly re-sized system. That’s why we measure static pressure, verify refrigerant charge, and walk you through warranty registration before we leave. AC Installation in Norcross isn’t about dropping in a box. It’s about matching the equipment to the house that actually exists.

Ductless Mini Split Installation in Norcross

Ductless Mini Split Installation in Norcross is often the right call for homes with no duct infrastructure, room additions that never tied into the main system, or upstairs zones that the central AC never reached properly. A mini split pairs an outdoor condenser with one or more wall-mounted indoor air handlers, each with its own thermostat, connected by a small refrigerant line set that runs through a 3-inch hole in the exterior wall. In Norcross, a typical residential mini split installation runs $3,500-$7,500 depending on the number of zones and the system’s BTU capacity.

Historic Homes and Additions

Old Town Norcross historic homes frequently have no basement, no crawlspace room for ductwork, and structural constraints that make retrofitting impossible without major renovation. A ductless mini split delivers cooling without disturbing plaster walls or original trim. We’ve installed Daikin and Bryant multi-zone systems in century-old Norcross homes where the homeowner wanted summer comfort without sacrificing character.

Fixing the Upstairs Problem

In the 1980s two-story colonials off Peachtree Industrial Boulevard, the second floor often lacks a proper return path and runs 6-8°F warmer than downstairs. Rather than replace an entire central system that still can’t move air upstairs, a single-zone mini split in the master suite or bonus room solves the problem directly. No ductwork to redesign. No fighting with a system that was never built for the load.

AC Replacement in Norcross

AC Replacement in Norcross is not a simple swap of old for new. The builder-grade systems installed during Gwinnett County’s suburban explosion were sized by square footage, not by actual cooling load, and the attic ducts they connect to have been baking for three decades. A replacement that matches the old tonnage without checking static pressure, duct integrity, and room-by-room airflow will inherit every problem the original system had, plus new ones.

A typical AC replacement in Norcross runs $3,500-$7,500 for a complete system including the outdoor condenser, indoor evaporator coil, and necessary electrical and refrigerant line updates. If duct redesign or zoning is needed, we’ll tell you during the estimate and put it in the written price.

When We Redesign the Ducts

We replaced a builder-grade 3-ton Goodman in a two-story colonial off Jimmy Carter Boulevard where the original 1989 attic duct trunk had collapsed insulation and the second-floor rooms ran 6-8°F warmer than downstairs all summer. Our tech measured static pressure at the air handler, found it well above the blower’s rating, and spec’d a 4-ton Carrier with a redesigned trunk and added return so the upstairs finally pulled its share of the tonnage. We also verified the new system’s refrigerant charge and dialed in thermostat calibration before walking the homeowner through warranty registration.

The Static Pressure Check

Every AC replacement we perform in Norcross includes a static pressure test at the air handler. High static pressure means the blower is working harder than designed, which kills efficiency, shortens motor life, and prevents the evaporator coil from hitting its rated SEER2 performance. If your attic flex is kinked, liner is separating, or returns are undersized, we’ll show you the numbers and build the fix into the job.

Trusted Brands We Service in Norcross

Our technicians carry training certifications and local parts inventory for Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Norcross homeowners, that means faster turnaround when a coil, compressor, or control board is needed. We don’t have to special-order a Bryant contactor or a Daikin fan motor from a warehouse three states away. Our Atlanta office stocks common components for the brands we install most, and our trucks carry the filters, capacitors, and refrigerant types that match the systems already in Norcross homes. When you need a replacement part under warranty, we handle the paperwork.

Common AC Installation Problems We See in Norcross Homes

• Undersized returns on two-story colonials. The 1980s subdivisions near Simpsonwood Park and along Holcomb Bridge Road were built with a single central return on the first floor. The second floor has no return path, so conditioned air has no way back to the air handler. We add jumper ducts or dedicated returns so the upstairs bedrooms don’t stay 5-10°F off the thermostat in July.
• Collapsed attic duct insulation. Georgia attics cook duct liner. In Norcross homes built during the Gwinnett boom, the flex duct insulation has separated from the inner liner, creating hot spots and air leaks that a new condenser cannot overcome. We inspect every foot of accessible ductwork during our estimate.
• Rule-of-thumb sizing that short-cycles. The original 2.5-ton or 3-ton unit was picked by the builder based on square footage alone, not on window orientation, insulation value, or internal heat gain. An oversized replacement short-cycles, fails to dehumidify, and dies young. We perform a room-by-room load calculation before recommending equipment.
• High humidity from slab foundations. The heavy clay soils throughout Gwinnett County trap ground moisture against slab foundations, raising indoor humidity baselines. A system that only cools without aggressively managing latent load leaves Norcross homes clammy even at 72°F. We size for dehumidification, not just temperature drop.

Pricing for AC Installation in Norcross, GA

We Also Serve Cities Near Norcross

Our crews work throughout Gwinnett and surrounding counties. We regularly perform AC installation and replacement in Norcross, Buford, Lawrenceville, Suwanee, and Grayson. Scheduling and dispatch are coordinated from our Atlanta office, with local technicians assigned to your area.

FAQs About AC Installation in Norcross