144 HVAC Service Contractors in Marietta, GA

Marietta sits inside the Atlanta metro area, where summer heat pushes thermostat settings relentlessly. The region records roughly 47 days above 90 degrees annually, with humidity driving heat-index values past 100 on repeat occasions. HVAC systems here endure strain through both cooling and heating seasons. Homeowners turn to qualified help, and they find plenty of it: 211 contractors serve this market with an average rating of 4.2 stars across nearly 92,000 reviews. Getting professional HVAC Service in Marietta matters, because the difference between a properly sized system and a mismatch shows up fast in utility bills and comfort alike.

When problems arise, costs follow predictable bands. A service call runs $75 to $200 for diagnostics, while a standard repair averages $150 to $1200 depending on what part fails. Routine maintenance like a single-system tune-up typically falls between $70 and $200. In Georgia, every contractor must hold either a Class I restricted or Class II unrestricted license from the State Board of Conditioned Air Contractors, proof they've met the state's competency baseline for working on cooling and heating equipment.

Customer feedback points to real differences worth knowing. Cool Air Mechanical draws five-star reviews that name Stan Bailey for his diagnostic skill and Luis Alvarez for installation precision, earning a 4.9 rating. Coolray Heating & Air Conditioning pulls a 4.8 rating with mentions of Jeremy, Wes, and Mike for professionalism and problem-solving ability. Casteel Heating, Cooling, Plumbing & Electrical earns mixed marks, with praise for installation quality countered by concerns over pricing clarity on more involved jobs.