Top 7 HVAC companies in Cobb, Georgia

Cobb County sits in IECC zone 3A with a moist regime, 2,600 heating degree days and 2,000 cooling degree days. Design temperatures run 23 °F in winter and 93 °F in summer, producing a balanced mixed load with high summer humidity. Central air conditioning is near universal and heat pumps show excellent suitability. Peak service demand occurs in summer, while north Georgia mountain pockets push into zone 4A and add shoulder heating loads. Equipment must therefore handle both substantial latent cooling and moderate winter capacity without oversizing that would short-cycle in the milder seasons.

Local climate demands

The shortlist

A&D HVAC LLC

A&D HVAC LLC operates from 2491 Sandtown Rd SW, Marietta, GA 30060 and lists the phone number (678) 884-4487. Its 36 reviews produced a raw 5.0 that the Bayesian adjustment lowered to 4.893 because the national mean sits at 4.764. The modest review count limits how far the score can stand apart from that mean. The general-contractor listing and absence of published 24/7 hours indicate standard daytime commercial and residential work. These figures cannot reveal whether the firm maintains its own service fleet or subcontracts installations.

S P Heating and Air

S P Heating and Air lists 94 reviews at a raw 4.9, adjusted downward only 0.033 points to 4.867 because the larger sample already anchors the rating near the national mean of 4.764. The address is 322 Northpoint Pkwy SE Suite J, Acworth, GA 30102 and the contact number is (678) 697-2305. Its general-contractor category and public website suggest steady residential volume without overnight guarantees. The numbers leave open whether technicians carry specialized duct-cleaning credentials.

Space Air Duct Marietta Clean

Space Air Duct Marietta Clean recorded 12 reviews at a perfect raw 5.0, pulled to 4.831 by the adjustment formula. The firm works from 1815 S Cobb Dr SE #218, Marietta, GA 30060 and can be reached at (770) 504-4932. The general-contractor listing plus website presence points to focused duct and equipment work during ordinary business hours. Limited review depth means the high raw score still receives noticeable shrinkage toward 4.764.

HVAC Guyz & Plumbing Inc

HVAC Guyz & Plumbing Inc holds 40 reviews at a raw 4.8 that adjusted to 4.785. The Atlanta address 30324 pairs with the phone (470) 255-4535. No website appears in the listing and the general-contractor category implies combined plumbing and HVAC calls without 24/7 coverage. The raw rating sits only 0.036 above the national mean, so the adjustment moved it very little despite the moderate review count.

Assured Comfort Heating, Air, Plumbing

Assured Comfort Heating, Air, Plumbing shows 147 reviews at a raw 4.7 that the model adjusted upward 0.011 points to 4.711. The address 16 Harris Dr SE, Marietta, GA 30067 matches the phone (770) 872-4168. Published 24/7 availability and a website differentiate it from most peers even though the category remains general contractor. The larger review base keeps the final score close to the observed rating.

Heating and Air Conditioning

Heating and Air Conditioning lists only four reviews at a raw 3.8 that the adjustment raised to 4.651 because the small sample pulls the score toward the 4.764 national mean. The Marietta address 1250 Austell Rd SE, Marietta, GA 30008 carries no published phone number. Its general-contractor listing and 24/7 notation suggest emergency response claims without supporting review volume. The wide gap between raw and adjusted scores illustrates how little data exists to confirm those claims.

Cobb Air Inc HVAC service Marietta

Cobb Air Inc HVAC service Marietta recorded three reviews at a raw 3.7 that adjusted upward to 4.667. The address 3775 Lamb Dr, Marietta, GA 30064 pairs with the phone (770) 854-1905. No website is listed and the general-contractor category offers no 24/7 promise. The very small review count produces the largest upward movement toward the national mean among the seven firms.

Choosing an installer

Check that any shortlisted firm holds a current Georgia Class I or Class II Conditioned Air Contractor license that matches the BTU capacity of the planned equipment. Request the mechanical permit number from the specific city or county department before work begins. Verify current insurance certificates directly rather than relying on listing claims.

Installed costs

Modeled typical full-system prices range from $7,700 to $9,400 while 2025 invoiced averages reach $15,847 and the upper quartile hits $23,214. Labor is published at $90 per hour and permit fees run $100 to $350. Both sources therefore appear in the data because the invoiced average sits well above the modeled range. These figures cover complete changeouts and already incorporate local material and labor conditions.

Licensing and permits

The Georgia State Construction Industry Licensing Board — Division of Conditioned Air Contractors issues Class I licenses restricted to 175,000 BTU heating and 60,000 BTU cooling and unrestricted Class II licenses. General liability insurance must be in place before licensure, though the board sets exact limits by policy rather than statute; workers compensation applies once three or more employees are hired. Conditioned Air Contractor licenses are statewide, yet mechanical permits for residential replacements are issued by the local jurisdiction, for example Cobb County or the City of Marietta.

Available incentives

Georgia Home Energy Rebates remain active with heat-pump caps at $8,000 and higher HOMES amounts for low-income households. Georgia Power and select EMCs offer utility rebates from $100 to $1,500, all requiring participation in approved contractor networks. No federal residential tax credits apply in 2026 after the expiration of 25C and 25D, leaving only the commercial 48E incentive for third-party-owned systems. Homeowners therefore need installers already enrolled in the state and utility networks to capture available rebates.

Public listing data alone cannot confirm workmanship quality or current backlog. Homeowners should request license verification through the state lookup tool and obtain multiple written bids before signing.