United Rentals, Inc., through its subsidiaries, operates as an equipment rental company. It operates in two segments, General Rentals; and Trench Safety, Power and HVAC (heating, ventilating and air conditioning). The company offers approximately 3,100 classes of equipment for rent to construction and industrial companies, manufacturers, utilities, municipalities, homeowners, government entities, and other customers. Its fleet of rental equipment includes general construction and industrial equipment, such as backhoes, skid-steer loaders, forklifts, earthmoving equipment, and material handling equipment; aerial work platforms consisting of boom lifts and scissor lifts; and general tools and light equipment, including pressure washers, water pumps, and power tools. Its fleet also comprises trench safety equipment, such as trench shields, aluminum hydraulic shoring systems, slide rails, crossing plates, construction lasers, and line testing equipment for underground work; and power and HVAC equipment, which consists of portable diesel generators, electrical distribution equipment, and temperature control equipment, including heating and cooling equipment. In addition, the company sells new and used equipment; related contractor supplies, including construction consumables, tools, small equipment, and safety supplies; and related parts for equipment, as well as offers repair, maintenance, and rental protection services. As of January 1, 2014, it operated 832 rental locations in the United States and Canada. United Rentals, Inc. was founded in 1997 and is headquartered in Stamford, Connecticut.