B&B Air Conditioning & Heating Service

B&B Air Conditioning & Heating Service handles residential and light commercial HVAC from branches across Maryland, Virginia and Washington, DC, including one in Frederick. The company reports more than 68 years of combined experience and runs its own training program, the B&B Institute of Advanced Heat Pump Technology, founded in 1991. Heating work covers oil and gas furnaces, oil and gas boilers, heat pump heating and ductless mini-split heating. Cooling includes central and split systems, heat pump cooling, ductless mini-split cooling and geothermal cooling. Ductwork installation and repair, water heaters, generators and indoor air quality are also offered. Installations carry a two-year warranty with a complimentary service maintenance agreement, and service plans and financing are available. A 24/7 emergency line is open. Rated 4.8 from 273 Google reviews, 259 of them five stars.