Our Services
Heating Systems
Furnaces, boilers, hydronic systems, heat pumps, ductless heating, repairs, replacements, and indoor air quality solutions.
Cooling Services
Central and split air conditioning, heat pump cooling, ductless mini-splits, geothermal systems, tune-ups, repairs, and replacements.
Ductwork & Indoor Air Quality
Ductwork installation and repair, duct cleaning, thermostats and controls, air handlers, zoning, and indoor air quality support.
Installation, Repair & Maintenance
Complete HVAC installation, same-day repair in many cases, preventative maintenance, service agreements, and 24/7 emergency support.
About Us
B&B Air Conditioning & Heating Service has served Maryland, Virginia, and Washington, D.C. since 1957. The company began with a single Rockville location and has grown to seven offices across the DMV, including a dedicated Columbia/Elkridge branch at 6725 Santa Barbara Court in Elkridge, Maryland. B&B provides HVAC installation, repair, replacement, and maintenance for both residential and commercial customers, with services covering heating systems, cooling systems, indoor air quality, ductwork, thermostats and controls, air handlers, zoning, water heaters, whole-home generators, and related comfort systems. The company emphasizes factory-trained technicians, in-house training, same-day repair in many cases, and 24/7 emergency heating and cooling service. Its long operating history and continued regional growth reflect nearly seven decades of HVAC experience serving communities throughout Maryland, Northern Virginia, and Washington, D.C.