Self Brothers Heating & Cooling has built one of the most enviable reputations in the Marietta HVAC market: a perfect 5.0-star rating from 492 Google reviews, celebrating 25 years in business. The company operates out of the Atlanta metro area with a focus on the communities it has served since its founding, maintaining a brand identity rooted in family values and personal accountability — a message that comes through not just in marketing language but in the specificity of customer feedback.

The Marietta location serves as part of the broader Self Brothers operation, which also maintains a presence in Atlanta. Service capabilities include AC repair, AC installation, heating and furnace service, heat pump repair and installation, system maintenance, and ductless mini-split systems. The company's 25th anniversary promotion — exclusive specials offered to thank the community for decades of support — reflects a genuine investment in the local customer relationship.

What makes Self Brothers stand out most clearly in the reviews is the recurring mention of owner Mark's direct personal involvement in service calls. Multiple reviewers describe Mark as someone who shows up personally for emergency calls, drives long distances to help customers, and brings a level of owner accountability that's rare among HVAC contractors at any scale. This isn't a passive corporate brand — it's a company where ownership is still visible in the field.

Technician quality is consistent across reviews: punctual, respectful of the home, honest about system status and repair versus replacement decisions. Emergency responsiveness is particularly noted, with reviewers describing same-day or even after-hours response for urgent failures.

For Marietta homeowners seeking a 5-star, family-run HVAC company with 25 years of community trust and owner-level accountability, Self Brothers Heating & Cooling is one of the most recommended names in Cobb County.