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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • 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
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Additional Photos
Additional Photos

+20

Response time9 hrs
Recommended by96%of homeowners
Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
131
)
Tankless Water Heater - InstallWater Heater - Install or ReplaceSolar Water Heater System - Install+6 more

Serving Cupertino, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Did a $59 consult only. Turned out the cost of repairing the old heater was almost as much as a new one, so we got a new one, and handled the install ourselves. Luis B was great, knowledgeable, friendly, didn't try to upcharge just to sell a heater, which we appreciated. Gave us an honest evaluation, several options, and was right on time. I will say, though, that the company failed to call me when he was on his way... not a big deal. All in all a good experience."
New Tankless Water Heater Installation
Additional Photos
Additional Photos
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+19

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Chandler's Plumbing
Chandler's Plumbing
4.3(
742
)
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
388 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Fluid Dynamics Plumbing Inc
Fluid Dynamics Plumbing Inc
5.0(
36
)
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%
8 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

"We hired Fantastic Rooter to re-pipe my mother-in-law's house. They did a fantastic job - even the city inspector was praising Gerardo and his crew for their work. She also needed a new water heater and sink, and those were reasonable priced. The guy that replaced the sheetrock did a great job. You can't even tell the walls were ever cut into, he made them so smooth again. And they cleaned up well, too. I highly recommend them!"
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
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Water Heaters questions, answered by experts

While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.

While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.

Yes, hybrid water heaters can be noisy — noisier than traditional water heaters. The sound they produce is often compared to the hum of a dishwasher. Its noise comes from the heat pump’s fan and compressor as they work to pull in and compress the air. While it’s not totally disruptive, especially if the unit is installed in less frequented areas, like a basement or garage, it’s something to keep in mind if you’re sensitive to noise or if the unit will be placed near bedrooms or living spaces.

When replacing an old unit, you might want to switch from a gas water heater to an electric water heater or vice versa. To do this, you will likely need to add infrastructure to the area. For example, you likely don’t have a gas line that served your old electric water heater. You’d have to call a plumber to put in a new gas line. If you’re replacing a gas unit with an electric one, the plumber will need to safely cap the old gas line. You will then need an electrician to add wiring for the new electric unit.

The chemicals in a water softener can wear down the anode rod in the heater and shorten its life span. However, for most people, the benefits of the softener outweigh this potential drawback.

Have a plumber inspect the anode rod annually for damage, as replacing the anode rod is far less expensive than replacing the entire 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.