Alliance Trade Services

Alliance Trade Services is a family owned and operated, licensed and insured contractor in Upper Marlboro covering Prince George's County, Anne Arundel County and northern Calvert and Charles counties. Heating work includes furnace repair, maintenance and installation, heat pump repair, maintenance and installation, boiler services and emergency heating repair. Cooling includes AC repair, maintenance and installation, ductless mini splits and emergency AC repair. The company also does plumbing, electrical, water heaters, drain cleaning, indoor air quality equipment such as air purification, UV lights and filtration, and commercial HVAC. Emergency service runs 24/7, free estimates are offered, and work carries a satisfaction guarantee. Rated 5.0 from 69 Google reviews, all five stars. Commercial HVAC includes preventive maintenance, equipment replacement, rooftop unit service and commercial boiler support for offices, retail, restaurants and churches. Service reaches Bowie, Laurel, Crofton, Odenton, Annapolis and Edgewater.