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Fast Water Heater Company services all of Orange County. If you’ve woken up to the surprise of a leaking water heater or a cold shower, we guarantee same-day service, if you call by noon. Our hours are 7 a.m. – 8 p.m. Monday-Friday and 8 a.m. – 5 p.m. Saturday & Sunday.

We’re homeowners too and know emergencies don’t conveniently occur just during the week; we’re open seven days a week and don’t charge extra for weekend service calls.


As an award-winning service provider, we install & repair thousands of water heaters in Orange County every year. We’re one of the only official warranty service providers on behalf of Rheem in Southern California. We service other major brands too, such as Bradford White, A.O. Smith, Richmond and more.

Lots of homeowners are interested in converting to tankless water heaters, and we have a crew of installation experts who can troubleshoot your home’s consumption needs to appropriately size a tankless unit for you. Every home is different, and talking to you and inspecting your unique plumbing setup, allows us to tailor our service precisely to fit your needs.

Learn more about tankless water heaters, hybrid units, rebates and heat pump water heaters.


All our certified technicians are licensed, bonded, background-checked and have years of water heater experience before they ever step foot into your Orange County home. They are employees of the company, not sub-contractors.

If you call for water heater replacement or service, try to find your water heater model number and serial number so we can identify the age, warranty and any other pertinent information about your existing unit. (This info can be found on a large sticker usually on the side of the water storage tank.)


These days, most local communities in Orange County require a permit for a water heater installation (this will not delay any work, just will schedule a safety inspection at a later date). Just have your zip code and we can determine permit pricing for your jurisdiction.

Local Water Heater & Plumbing Permits – Orange County, CA

Orange County Energy Efficiency Event
How will the NAECA 3 regulations affect Orange County homeowners? Learn more about the changes in water heater efficiency through an Event with KPCC, Southern California Public Radio.

Orange County Links

Orange CountyOrange County LibrarySeal Beach Wildlife RefugeCleveland National Forest