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Top-Rated Tankless water heater installers in Mount-hermon - Updated Nov 2026

Avatar for POSEIDON PLUMBING LLC
POSEIDON PLUMBING LLC
4.8(
10
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"They were very prompt, polite, and professional. My water heater was in a tricky spot . He ended up needing to disconnect a few things related to my furnace as well. They did it without charging me anything extra and When they were done, everything looked and worked great."
Nuvo H2O water softener
Navien tankless water heater
Navien tankless water heater
Rough in shower installation
Outdoor shower installation

+2

Response time4 hrs
27 neighbors recently requested a quote
Recommended by55%of homeowners
Avatar for Castle Plumbing
Castle Plumbing
5.0(
21
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Warranties offered

Small jobs welcome

"And we had cancel plumbing install an aqua filter water system with a UV filter. He was prompt, kept his word, and as far as we can tell did an excellent job. I would highly recommend him!"
Response time1 day
1 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for TRIO Heating, Air & Plumbing
TRIO Heating, Air & Plumbing
5.0(
5
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Called Trio Heating on a late Friday afternoon and they sent out two technicians (Jose & Dallin) the next morning to fix a gas heater that would not turn on. Their communication from beginning to end was great. They sent me a text 45 minutes before their arrival time and I was able to track their ETA which was extremely helpful. They explained to me what the issue was. I was able to run out and buy a new thermostat for them to install. They did a great job, cleaned everything up and put everything back together. They also typed up everything they worked on and took multiple detailed photos of the unit and emailed 10 minutes after they left. I think what they charged was extremely reasonable for the quality of work. I really appreciated not being charged a higher fee for coming out on a weekend. Will definitely use them again for my HVAC needs!"
Heating & Air Conditioning Installations
Heating & AC Install
Heating & AC Install
Heating & AC Install
Heating & AC Install

+101

Response time4 hrs
Response rate93%
11 neighbors recently requested a quote
Avatar for Abdel's Home services
Abdel's Home services
5.0(
9
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved

Hi, I’m Abdel, owner of Abdel’s Home Services. I’ve been providing residential repair and installation services for several years, helping homeowners with everything from small fixes to detailed improvement projects.\nI serve the Bay Area and surrounding communities, and I’m willing to travel locally for the right project. My specialties include TV mounting, door adjustments and installations, cabinet installation, drywall repair, fixture replacements, hardware installation, and general home repairs.\nClients hire me because I focus on quality, precision, and clear communication. I show up on time, protect your home, and make sure the work is done properly — not rushed. My goal is to leave every homeowner satisfied and confident in the results.\nI look forward to helping with your next project.

Avatar for Lorenzo Heating & Cooling
Lorenzo Heating & Cooling
5.0(
1
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

AC on roof
AC/FURNACE REPLACEMENT
Heat Pump Mini Split
Air Handler
Air Handler

+8

Response time1 hour
Response rate91%
Avatar for Gallegos Plumbing Specialists Inc.
Gallegos Plumbing Specialists Inc.
5.0(
1
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Credit card accepted

Gallegos Plumbing Specialists Inc. proudly serves the Bay Area and surrounding regions with fast, reliable, and high-quality plumbing services for both residential and commercial clients. We are a fully licensed and insured company with years of hands-on experience, delivering expert solutions built to last.\n\nFrom full-home repiping and new construction to ADUs, remodels, and everyday plumbing repairs. No project is too big or too small. Our team specializes in comprehensive plumbing systems, using trusted materials and the latest techniques to ensure efficiency and durability.\n\nWhat sets us apart is our speed, precision, and dedication to customer satisfaction. Whether you're upgrading your home's plumbing or managing a large-scale development, we’re committed to getting the job done right and on time.\n\nContact Gallegos Plumbing Specialists Inc. 408 310 0884 today to request a quote or schedule service anywhere in the Bay Area.

Sewer & Main Line
Sewer & Main Line
Sewer & Main Line
Sewer & Main Line
Sewer & Main Line

+8

6 neighbors recently requested a quote
Avatar for John Hilberath Plumbing & Rooter, Inc.
John Hilberath Plumbing & Rooter, Inc.
4.8(
284
)
Tankless Water Heater - Install

Serving Mount-hermon, CA and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"john hilberath saved my house. my water heater rusted out and sent water all over my living room floor. luckily my daughter called john and he came right away to turn off the water. he came the next morning with a new water heater and had it installed by the time arrived. he was very courteous and professional in everything he did. I would certainly call on him again."
Response time1 day
Recommended by92%of homeowners
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