Providing Expert Plumbing, Heating & Air Conditioning Service Since 1950 Since 1950, the Magnolia Companies have been providing homes, businesses and government offices in Maryland, Northern Virginia, and Washington, D.C. plumbing and HVAC services. Whether you need an emergency plumber in DC, a complete heating or cooling system installed in Rockville, MD, or a drain cleared in Maryland, we’ve got you covered. The entire Magnolia team works to provide: Peace of mind that your plumbing and HVAC is done right and backed with a 100% Satisfaction Guarantee. Faster response times with GPS-enabled fleet electronically dispatched from 3 locations serving Washington, DC, Maryland and Northern Virginia's Fairfax and Vienna areas. Value and savings by utilizing today’s technology, advanced training, and trusted quality products which carry full factory warranties. Convenience with extended service hours of 7 am - 7 pm, 7 days a week with no overtime charges on most of our residential services. Experience the difference with a team you can trust. Can Do. Will Do. Well Done - Guaranteed!