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Top-Rated Tankless water heater installers in Cupertino - Updated Nov 2026

Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
112
)
Tankless Water Heater - Install

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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+20

Response time9 hrs
Recommended by94%of homeowners
Avatar for Water Heater Boys, LLC
Water Heater Boys, LLC
5.0(
21
)
Tankless Water Heater - Install

Serving Cupertino, 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!"
Tankless Install
75gal Bradford White
Response time2 hrs
Response rate100%
Avatar for Better Water Heaters
Better Water Heaters
4.5(
195
)
Tankless Water Heater - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Since my current water heater was 17 years old I decided to replace it before it gave out on me. I emailed Better Water Heaters in the evening with the details and got a phone call from Frans who scheduled Daniel to come and give me a free estimate the next afternoon. In the meantime I got another quote from another installer after texting photos of the current installation. Daniel’s estimate was similar for a standard water heater replacement but although I had not considered a tankless install I asked for a quote on that as well after discussing pros and cons with Daniel. Daniel then waited while I discussed this with my wife and since he could do the install the next day I decided on the tankless install and Daniel arrived the next morning and completed the install in three hours. I am very happy with the quickness and quality of the work as well as the quality of the Rinnai water heater that was installed."
Additional Photos
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1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for The Tankless Guys Plumbing Corp.
The Tankless Guys Plumbing Corp.
5.0(
13
)
Tankless Water Heater - Install

Serving Cupertino, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"The Tankless Guys not only installed a new water softener system, they also put in a new tankless water heater and a new toilet. They provided excellent service. We had a range of options to choose from and Sergio and his team performed all the work in a timely manner. Sergio also answered any questions we had thoroughly. I highly recommend them!"
Give us a call today at 408-580-0031
Give us a call
give us a call
give us a call
give us a call

+5

Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Super Brothers Plumbing Heating & Air
Super Brothers Plumbing Heating & Air
4.9(
9
)
Tankless Water Heater - Install

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"The complete process from the quote, to scheduling, to the installation of the tankless water heater was excellent. It only took one week from quoting through the completion of the job. The installation was completed in one day. The team was cordial and professional. Furthermore, the price was competitive. I would strongly recommend Super Brothers for your plumbing jobs."
Heat Pump Water heater installation
Rheem Heat Pump Water heater
AO SMITH HEAT PUMP WATER HEATER
sewer line ready to be installed
Sewer Line Project

+27

Response time3 hrs
Response rate100%
24 neighbors recently requested a quote
Avatar for Escamilla Plumbing and Rooter Inc.
Escamilla Plumbing and Rooter Inc.
5.0(
51
)
Tankless Water Heater - Install

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"Gustavo from Escamilla plumbing is a pro thru and thru. I gave him a tough job that I wanted to tackle but didn't have the necessary tools or time to tackle. I had him relocate the water heater lines and install a tankless water heater, remove steel pipes and redo drain lines. The kicker for the water lines was access next to a furnace and new gas lines that needed to be run due to insufficient gas supply. During the project we found micky mouse water line taps that needed to be removed and the house water shutoff valve that failed to closed completely. Lots of unexpected work but he gave decent quotes to complete the job. He is quick, doesn't cut corners, and gets the job done. I wholeheartedly recommend him for project a homeowner wouldn't touch or doesn't have time to do."
Plumbing Project
Electric Heat Pump Water Heater
Shower Valve
Shower Area Remodel
New Bidet

+167

Response time1 day
Recommended by82%of homeowners
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