Fast Water Heater Co. is a water heater installation, repair, and maintenance company serving Washington, Oregon, and Northern and Southern California. Founded in 1986, the company provides residential and commercial services, with same-day installation available when customers call by noon. Its technicians are described as certified and background-checked, and the company emphasizes safe, code-compliant work, permit handling, customer service, and a price-match guarantee.

Fast Water Heater works with traditional gas and electric tanks, tankless systems, and heat pump water heaters. Services include replacements, repairs, maintenance, commercial water heater work, and dedicated property management support. The company also highlights energy-saving equipment and potential rebates, along with financing options for eligible purchases. Customers can request a service appointment or virtual quote online, or call for assistance. Fast Water Heater Co. operates seven days a week and lists locations in Washington, Oregon, and California. The company is now part of the Fast Home Services family, whose broader offerings include plumbing, HVAC, and electrical services.