Top 7 HVAC companies in Gwinnett, Georgia

Gwinnett County, Georgia, lists a population of 936250. Public records collected on 2026-08-16 supply the data for a shortlist of seven HVAC companies. Companies receive ranking through a Bayesian-adjusted rating that pulls each raw star rating toward the national mean of 4.764 until review volume grows large enough for the score to stand independently. A public website and published 24/7 availability serve as the listed tie-breakers. This is a shortlist built from public listing data, not a review of work performed.

The shortlist

Able Service Company

Able Service Company operates from 492 New Hope Rd, Lawrenceville, GA 30046 and lists the phone number (678) 745-0048. It carries 59 reviews at a raw rating of 5, adjusted downward to 4.92 because the national mean sits at 4.764 and the review count is still moderate. The listing appears under general contractor and includes a public website, which supplied one of the tie-breakers applied. These figures cannot confirm the outcome of any particular service call or installation.

Northern Exposure HVAC, LLC

Northern Exposure HVAC, LLC is located at 2320 Wood Creek Ct NE, Dacula, GA 30019 and answers calls at (678) 373-8492. Forty-five reviews support its raw rating of 5, which the adjustment lowers to 4.906 given the same national mean and review depth. Its general-contractor category and public website account for the tie-breakers recorded. The numbers give no information on how the firm handles emergency service requests.

S&n heating and cooling

S&n heating and cooling maintains its address at 2606 Five Forks Trickum Rd SW, Lawrenceville, GA 30044 and can be reached at (678) 532-2273. It records 48 reviews at a raw rating of 5 that adjusts to 4.909. The 24/7 availability listing provided the tie-breaker that placed it ahead of firms with websites alone. These ratings supply no detail on parts availability or typical response times.

Gwinnett Heating & Air

Gwinnett Heating & Air lists 1284 Pirkle Rd, Norcross, GA 30093 as its address and the phone number (678) 314-9302. Thirty-one reviews back its raw rating of 5, adjusted to 4.884. The general-contractor category and public website supplied the tie-breakers used. The data do not address whether the firm maintains an inventory of common replacement parts.

RK Heating & Air Conditioning

RK Heating & Air Conditioning is based at 1414 Severbrook Cir, Lawrenceville, GA 30043 and lists (470) 206-8167. Twenty-two reviews support its raw rating of 5, adjusted downward to 4.864. Its general-contractor listing and public website produced the recorded tie-breakers. These figures cannot indicate how the company prices change-outs versus new construction.

Thunder AC and Heating Services

Thunder AC and Heating Services operates from 2761 Valley Spring Dr, Lawrenceville, GA 30044 and answers at (404) 379-1165. Twelve reviews stand behind its raw rating of 5, adjusted to 4.831. The general-contractor category combined with a public website earned the tie-breakers applied. The published numbers leave open questions about the firm's experience with high-humidity summer conditions.

Gwinnett HVAC Repair

Gwinnett HVAC Repair is located at 2565 River Summit Dr, Duluth, GA 30097 and can be reached at (470) 855-1998. A single review supports its raw rating of 5, adjusted to 4.772 because the small sample size allows stronger movement toward the national mean of 4.764. Its general-contractor category and public website supplied the tie-breakers. The limited review volume prevents any conclusion about consistency across multiple jobs.

How to choose

Review the contractor's license class on the state lookup site to confirm it matches equipment size. Compare raw and adjusted ratings to understand how review volume affects placement. Note whether the firm lists a public website or 24/7 availability, as these factors supplied the tie-breakers used here. Request references from recent local installations and verify permit history with the county building department. Ask whether the firm participates in any current utility or state rebate programs that require network membership.

Cost

Installed costs for a typical full system appear at $8550 with a modeled range of $7700 to $9400. The 2025 invoiced average reaches $15847 while the upper quartile sits at $23214. Labor rates are listed at $90 per hour. Permit fees range from $100-350 depending on jurisdiction. The invoiced average stands noticeably above the modeled typical price, and the upper quartile lies substantially higher still. Both sources carry the same data caveat. These figures cover equipment and labor only; they do not include duct modifications or electrical upgrades that may arise on site.

Climate

Gwinnett County falls primarily in IECC zone 3A with a moist regime. Heating degree days total 2600 and cooling degree days total 2000, producing a balanced mixed load profile. Design conditions list 23 °F for winter and 93 °F for summer, with high summer humidity. Natural gas and electricity serve as the primary heating fuels. Heat pumps show excellent suitability and central air conditioning reaches near-universal saturation. Peak service demand occurs in summer. North Georgia mountain areas push some portions into zone 4A, increasing the need for properly sized equipment that manages both sensible and latent loads during long humid periods.

Licensing and permits

The Georgia State Construction Industry Licensing Board — Division of Conditioned Air Contractors issues licenses at the state level through the Professional Licensing Boards Division. Class I covers restricted work up to 175,000 BTU heating and 60,000 BTU cooling; Class II covers unrestricted work. General liability insurance is required before licensure, with limits described only as set by board policy rather than a single published statewide figure. Workers' compensation insurance becomes mandatory once a contractor employs three or more people. The lookup tool is available at https://verify.sos.ga.gov/verification/Search.aspx. Conditioned Air Contractor licenses are statewide, yet mechanical permits for residential changeouts are pulled from the local county or city building department and therefore vary inside Gwinnett.

Incentives

The Georgia Home Energy Rebates program through GEFA remains available with a maximum heat pump rebate of $8,000; HOMES raised to $10k / $16k low-income. No state tax credit exists. Utility programs through Georgia Power, Georgia EMCs, and TVA in north Georgia offer rebates from $100-$1,500. Contractor network membership is required for participation. Federal 25C and 25D credits expired at the end of 2025, leaving no residential HVAC tax credit in 2026. The 48E ITC at 30 percent survives only for commercial or third-party-owned systems that meet the listed construction or service deadlines. Homeowners should therefore contact only network contractors when pursuing state or utility incentives.