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Monthly payment plans as low as $17.99

Installation Included — Full Parts & Labor Coverage — 100% Worry Free
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  • Same-day service if you call by noon
  • Price match guarantee
  • Certified, background-checked technicians
  • We handle all permits & building codes



As local service providers, reviews are the gas that drives our engine. The most important thing for a service provider is its reputation, and the word-of-mouth praise we’ve received from thousands of satisfied customers speaks to our attention to detail.

“I had multiple plumbers from other companies come out to fix my water heater, and none of them could figure out the problem. It took Fast Water Heater Company 1 visit that took about 45 minutes to completely fix it!! I could not be happier. Rex was extremely helpful and nice… Could not recommend them enough! Will definitely be calling them again if I have other issues. Thank you!”
Rob N. Water heater Portland

“I was really impressed with the quick turnaround and quality workmanship for this job. The technician (Matt S) was an awesome guy and did a really thorough job, even walking me through the details of the installation, and post “in case of a future emergency” list of things to address. Overall, a really solid company to work with.

Darryl T.Fast Water Heater Facebook

What to Expect From Us:

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

We’re home-owners 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.

We’re the water heater experts, and can repair, replace or install electric or gas water heaters, standard tank or tankless models and even install hybrid heat pump systems in certain situations. If you’re just interested in water heater codes or water heater rebates, we’ve got you covered here too.

All our certified technicians are background-checked and have years of water heater experience before they ever step foot into your home.

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

These days, most communities in the Peninsula will require a permit for a water heater installation (this will not delay any work, just will schedule a safety inspection at a later date).

Local Water Heater & Plumbing Codes – San Francisco & The Peninsula