If it ain't broke, don't fix it. But if it is, Guaranteed Appliance Service has been the place to call for more than 35 years to get the job done at a fair price. A technician from Guaranteed Appliance Service will come to your home or business to repair washers and dryers, refrigerators and freezers, dishwashers, microwaves and certain window air-conditioning units. They specialize in brands like Frigidaire, Electrolux and Samsung.