B&B Air Conditioning & Heating Service

B&B Air Conditioning & Heating Service works from Rockville and branches in Columbia, Frederick, Annapolis, Gaithersburg, Fairfax and Sterling, serving Maryland, Virginia and Washington DC. Heating work covers oil and gas furnaces, oil and gas boilers, heat pump heating and ductless mini-split heating, and cooling includes central air, heat pump, mini-split and geothermal systems. Ductwork installation and repair, duct cleaning, thermostats, whole-home generators and water heaters are also offered. It runs its own five-year training program, the B&B Institute of Advanced Heat Pump Technology, founded in 1991. Installations carry a 2-year warranty that includes a complimentary service-maintenance agreement, and service plans, financing and a 24/7 emergency line are available. Rated 4.9 from 684 Google reviews, 647 of them five stars.