A-Advantage

A-Advantage Heating & Air Conditioning has offices in Manassas and Alexandria and works on both homes and commercial buildings. Services include air conditioning and heating installation and repair, furnace and boiler replacement, whole-house generators and comfort enhancements, and the company works on all makes. For commercial clients it specializes in mini-split heating and cooling for computer server rooms. Technicians are available 24 hours a day, and customers are encouraged to ask about its maintenance program and service contracts. It holds a Class A Virginia contractor license and is bonded and insured. Rated 4.6 from 41 Google reviews, 35 of them five stars. It reports being used by over 20,000 homeowners and local businesses and follows a Customer for Life approach. Published customer reviews mention same-day arrival and warranty coverage on a repair.