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  • Verified reviews icon251
    Verified water heater services reviews

Find Water heater pros in Cupertino

Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
109
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Cupertino, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Water Heater Masters were top-notch! I called on a Saturday afternoon - they were available 9am Sunday morning to come and inspect and quote. They only had one guy working that day, but scheduled me for Monday morning between 8 and 9. At 8:15am I got a call with an ETA of 8:45, which was a really nice touch! Despite telling me it would take an entire day to install, they were done by 1pm. They also found some creative ways to do the install to avoid drilling through my stucco (for the exhaust vent and for the condensate run-off). Very professional and clean-looking install. These guys may not always be the cheapest around, and they recommended a top-of-the-line heater (which is what I really wanted anyway), but I'd much rather pay a little extra for that level of service and support. Thank you!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time9 hrs
Recommended by96%of homeowners
Avatar for Fluid Dynamics Plumbing Inc
Fluid Dynamics Plumbing Inc
5.0(
37
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+1 more

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Had to replace old water heater that leaked and flooded my basement- the Fluid team was amazing and timely - were able to come quickly and stop the leak and basement drain and ultimately replaced my water heater- very professional staff - communicated well and very fair pricing - would call them again for any plumbing issues at my house!"
Water Heater Repair
Wall Water Heater
Trench Install
Trench Install
Trench Install

+13

Response time10 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Fantastic Rooter, Inc.
Fantastic Rooter, Inc.
4.5(
174
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Cupertino, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Excellent co-ordination by the office. Lady set up a visit by her field worker - he showed up on time to evaluate the problem. He needed a gasket to fix the problem but had to get one at a supply store. Because he took longer to return then planned, he reduced the price by $30 and threw in a water pressure check as well. Oh, the gasket did fix the leak. Excellent job by all concerned."
Outdoor Tankless w H
Before a Tankless install
After a Tankless install
Indoor Tankless & Repipe
Indoor Tankless W H

+1

Response time2 days
Recommended by96%of homeowners
Avatar for Chandler's Plumbing
Chandler's Plumbing
4.3(
745
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Emergency services offered

"Called Chandlerâ s Plumbing came out in two hours after calling them. Removed the old water heater and replaced it with a brand new water heater. Was great to get it done so fast and have hot water again in my house. Would recommend this company to anyone looking to have plumbing work done."
Sewer Line Camera Inspection
Shut-Off Valve Repair
Main Water Line Replacment
Water Heater Installation
Tankless Water Heater Installation

+310

Response time4 hrs
391 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Aaron's Plumbing & Rooter
Aaron's Plumbing & Rooter
4.8(
103
)
Tankless Water Heater - InstallTankless Water Heater - Install - For Business

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Aaron and his crew were quick to respond. Within an hour of awarding the job to Aaron, his crew was at our home removing the old water heater and preparing the site to receive the new water heater. Within another hour, Aaron arrived with the new water heater and it was installed. We hired him on the spot for another project that he completed on the next work day. I will be keeping his number handy for any other projects that we need to have done."
Bathroom Remodel
Bathroom Sink Fixture Install
Bathroom Remodel
Kitchen faucet fixture repair
Shower Ugrade

+108

Response time6 hrs
Response rate93%
78 neighbors recently requested a quote
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Water Heaters questions, answered by experts

Most standard residential water heaters, which are typically around 40 gallons and use 240 volts and between 3,500 and 5,500 watts, require a 30-amp, two-pole circuit breaker. For smaller, point-of-use water heaters using 120 volts and between 1,500 and 3,000 watts, a 30-amp breaker is also often adequate. However, some models may have different needs; units that use more watts than average may require a 40-amp breaker, while smaller units might only need a 20-amp breaker. Newer, tankless, or more energy-efficient models can also require a higher amperage. Having the correct breaker size is crucial for safe and efficient operation, so it's best to consult a licensed electrician to determine the specific needs of your water heater.

Newer models are packed with newer technologies that decrease energy consumption and increase output, giving you more bang for your buck in more bills than one. 

If you’re trying to decide whether you want to repair or replace your new heater, consider factors like your utility bills, repair costs, and even your carbon footprint to help you decide whether it makes sense to buy a new one instead.

A thermocouple is a pretty simple device. It simply tells the control valve if heat is present. Most water heaters can use a universal thermocouple, provided it's the correct length. Getting one that's long enough for your appliance is crucial for success. However, some water heater models require model-specific thermocouples, which is why it's essential to take your existing one to the store to find the right match.

Water heater installation code requirements are in place to keep your family and home safe. Water heaters that are installed wrong can simply not work. However, that's an, if you're lucky, type of situation. More commonly, incorrectly installed water heaters pose a real threat from carbon monoxide poisoning, gas leaks, water leaks, and even explosions. 

If you have a tank-type electric water heater, it runs regularly to keep the water at the desired temperature. If you live in a home where you don’t use much hot water, it could seem wasteful to run power to heat water that you’re using infrequently. You could save some power by using a smaller tank, insulating the tank, or lowering the temperature of the water heater.

The Cupertino, CA homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.