Geothermal.contractors

A-Advantage Heating & Air Conditioning is a family-owned contractor serving Alexandria and Manassas, Virginia since 1990, providing HVAC installation, repair, and maintenance to residential customers throughout the Northern Virginia and DC metro area. The company installs a broad range of equipment, including geothermal ground-source systems, high-velocity systems, conventional split systems, heat pumps, boilers, and water heaters tailored to the region's varied housing stock. A-Advantage technicians handle system diagnostics, equipment replacement, and 24/7 emergency service for urgent comfort needs. The company also installs whole-house generators and offers home comfort enhancements such as smart thermostats, indoor air quality upgrades, and an air filter delivery program. Each office is licensed, insured, and bonded, and owner Bob Biberaj leads a team committed to transparent pricing and customer education across Northern Virginia. Verified active operator per a-advantage.com + A-Advantage published service list (VA bundle audit 2026-06-02)