Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in San Gabriel, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Top-Rated Tankless water heater installers in San Gabriel - Updated Nov 2026

Avatar for Speedy Water Heaters and Plumbing
Speedy Water Heaters and Plumbing
5.0(
21
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"The entire process from the initial call to actually getting to take a shower was easy and pleasant with Speedy Water Heaters. They were upfront with pricing, quick to schedule, installation was clean and timely, the tech was knowledgeable, efficient and so patient with all my questions. I would definitely recommend Speedy Water Heaters to my friends and family! Great job!"
Response time3 hrs
Response rate93%
Recommended by38%of homeowners
Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"Western Rooter to the rescue again! I had a small underground leak which appeared to be due to a bad sprinkler valve. A sprinkler repair company determined that it was not a bad sprinkler valve and thought it was due to a leak in the main water line. Daniel and Alex dug down to find that the leak was coming from a very old (at least 36 years) broken pvc line. After much testing and head scratching to try to figure out where the water was coming from, they decided to "chase the pipe." After much digging, they found that the very old broken pvc pipe was hooked up to a sprinkler valve that was buried 18 inches underground that had not been capped--only turned off. Roots from a nearby tree had opened the valve which caused the leak--crazy! The current sprinkler system has been the same one since we moved into the house in 1988. It took 36 years for the underground leak to occur!"
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
36
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I Called to get an in person quote for a tankless water heater flush and left this job with a whole house filter and a fridge connection. When Michael first arrived we inspected the tankless unit and tested the water to conclude flushing was not my best option. He then walked me through my options for home filters and we decided on a Halo system. Michael was very well educated on the subject and gave me the best value filter for my needs. He installed the unit the next day in less than a few hours and left me with a flawless work of art. I couldn't be more impressed with the professionalism he brings to this trade! I also requested to hook up a fridge and he did that in what seemed like 30 minutes. He will be the only plumber I call from now on!! Thank you Michael!!!"
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
9 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for G M C Plumbing, Inc.
G M C Plumbing, Inc.
4.9(
86
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Based purely on these reviews, GMC was the first and only company I called to install a recirculating tankless water heater. I found Geremi to be extremely reliable, and an excellent communicator via text or whatever. He told me in advance when he would arrive, which he confirmed often, he DID show up on time, the job site was clean and the installation was well done. I asked Geremi to come back to our house a few days later to make some minor adjustments to the system. He did so without hesitation and without any additional charges. I have nothing but positive comments for GMC plumbing."
New Drainage
Old  shower Drainage
New kitchen faucet
New Drainage
New Drainage- SEWER LINE

+3

Response time5 hrs
Response rate97%
24 neighbors recently requested a quote
Avatar for HARMONY ELECTRIC PLUMBING & AIR INC
HARMONY ELECTRIC PLUMBING & AIR INC
4.8(
36
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"They called us quickly and got a plumber out within a few days. Super thorough - tested all pipes and water sources to diagnose the problem. They were able to perform maintenance on most bathrooms the same day and improve the water temperature in our showers. Gave helpful, non-biased advice on potential further plumbing improvements. We will likely call this company again for any and all future plumbing needs."
784 neighbors recently requested a quote
Recommended by38%of homeowners
Avatar for AD3 PLUMBING
AD3 PLUMBING
4.9(
17
)
Tankless Water Heater - Install

Serving San Gabriel, CA and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"Really great experience. Called AD3 after finding that faucet would not turn the water off after watering my lawn. Adrian answered and explained that he was on a job but he would get another plumber to come more quickly. He called back within a few minutes and said someone would be coming soon. Within 20 mins. A Diaz Plumbing van arrived and 2 very experienced and nice plumbers quickly got to work replacing the faucet! All of this occurred in less than an hour and the cost was very reasonable. Adrian Diaz and AD3 are now on my contact list. My water bill thanks them!!"
Water Heater Install
Water Heater Install
Replace Toilet Flange
Replace Toilet Flange
Replace Toilet Flange

+6

Response time1 day
Response rate100%
2 neighbors recently requested a quote
...
Showing 1-10 of 225

The San Gabriel, CA homeowners’ guide to tankless water heater installations

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