4.7 
157 *The Angi rating for Water Heater Service companies in Fremont, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.
*The HomeAdvisor rating for Water Heater Service companies in Fremont, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.
Last update on October 13, 2026
Serving Fremont, CA and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"Water Heater Masters came the same day that I first contacted them and replaced my heater that day as well."
+20
Serving Fremont, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2012
Free estimates
Warranties offered
"My tankless water heater went out on a Friday night, and the Water Heater Boys were able to replace it on Saturday the next day! Excellent customer service and professionalism. Will definitely call if in this situation again, and will tell my friends!"
Serving Fremont, CA and surrounding areas
Approved
In business since 2001
Free estimates
Emergency services offered
"Excellent service. Professional technicians with positive attitudes. Would hire again for future water heater problems."
Serving Fremont, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Beni did a great job. Installed water heater in under 2 hours. Handled install with old galvanized piping. Had the lowest estimate and charge was the estimate. Very satisfied."
+1
Serving Fremont, CA and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Perfectly. They cleaned everything up, explained how the system worked and how often it needs attention, and hauled away the old hot water heater. They arrived on time, worked steadily, and finished before dinner time."
+19
Serving Fremont, CA and surrounding areas
Approved
Super Service Award Winner
In business since 1997
Free estimates
Emergency services offered
"Jamie is first class. Had my tankless water heater running and provided good advice."
+20
Serving Fremont, CA and surrounding areas
Approved
In business since 2014
Free estimates
Credit card accepted
"Pablo is very detail and quality oriented. He tried to explore options of repair before jumping into replacing to save me money. However. we end up replacing the water heater and he also took care of a pipe leak. He explore options and eventually installed a drain pump to make sure the work was done as per code (previously it wasn't).His work was very neat and left the area clean."
Serving Fremont, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Tony was informative, communicative, on-time and he did a great job replacing my water heater!"
+10
Serving Fremont, CA and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Warranties offered
"The first visit lead to cleaning the area around the heater and burners and checking the thermocouple. Sadly that seemed to make it worse. Less than a week later No hot water for over 30 hours till the second technician replaced the thermocouple. All is perfect now. No charge for the second visit. The next step, if needed will be a tankless and their quote looks a bit steep. But I am really hoping I won’t need to go that far."
+73
Serving Fremont, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2013
Free estimates
Emergency services offered
"They installed a Moen water shut off and a gas earthquake shut off. They were on time, efficient and professional."
+27
From average costs to expert advice, get all the answers you need to get your job done.
Tankless water heater costs in San Francisco, CA depend on the size of your water heater, location, fuel type, and more. Keep reading to calculate your expenses.
Looking to replace your water heater in San Francisco, CA? This water heater replacement cost guide helps determine the cost and factors affecting your total.
Running out of hot water too quickly or hearing strange noises when you call for hot water? Use this water heater repair cost guide to see what a fix will cost in San Francisco, CA.
Worried your water heater might freeze this winter? Learn to spot the warning signs and how to safely thaw your tank or tankless system out if necessary.
Hybrid water heaters will have you weighing high initial costs versus long-term savings. Is it the right option for you? Explore the pros and cons of hybrid water heaters.
The average lifespan of water heaters is 6 to 15 years for conventional models and up to 20 for tankless ones, but it can be less if they are not properly maintained.
