M and M Appliance is a discount appliance store based in Washington, D.C. The store offers a wide range of home-appliance products, including microwaves, washing machine, refrigerators, dishwashers and hoods as well as various parts and accessories. Since 1998, M and M Appliance has been serving customers in Washington, Rockville, Bethesda, Arlington, Reston, Chantilly, Baltimore, Gaithersburg, Potomac, Chevy Chase and Alexandria on home appliances service. M and M Appliances The appliance store carries an array of products from several brands, including Electrolux, Frigidaire, Bosch, Thermador, Liebherr, GE, Whirlpool, Maytag and KitchenAid.