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Top-Rated Water heater repair or service pros in Mount-hermon - Updated Nov 2026

Avatar for POSEIDON PLUMBING LLC
POSEIDON PLUMBING LLC
4.8(
10
)
Water Heater - Repair or Service

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 TRIO Heating, Air & Plumbing
TRIO Heating, Air & Plumbing
5.0(
5
)
Water Heater - Repair or Service

Serving Mount-hermon, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Trio Heating and Air was an amazing company to work with! About a month ago I had Adrian come out and give me a quote on a new furnace for my home and he was so knowledgeable and easy to understand on what type of system I was needing for my home to lower my bill. We went with Trio and they scheduled the install to be done the very next day! Ever since then the furnace has been working so good they set the thermostat up just right I barely had to change it when it become cold outside. It was such an easy and fast process. I would defiantly recommend Trio Heating and Air for any for your heating and cooling 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 Lorenzo Heating & Cooling
Lorenzo Heating & Cooling
5.0(
1
)
Water Heater - Repair or Service

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 Aleman Plumbing, Inc
Aleman Plumbing, Inc
4.8(
42
)
Water Heater - Repair or Service

Serving Mount-hermon, CA and surrounding areas

In business since 2014

Emergency services offered

Warranties offered

"Carlos was excellent explained every step cleared all of our problems for the agreed upon price on 57 year old plumbing.. I am very happy with my new kitchen faucet and drain and repaired shower drain... I will be calling this business for my plumbing issuse from now on as our other plumber finally retired.."
Grease trap
Replacement grease trap
Replacement grease trap
Replacement grease trap
Attic leak

+11

Response time5 hrs
Response rate100%
Recommended by37%of homeowners
Avatar for John Hilberath Plumbing & Rooter, Inc.
John Hilberath Plumbing & Rooter, Inc.
4.8(
284
)
Water Heater - Repair or Service

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
Avatar for Superior Plumbing & Drain Cleaning Services
Superior Plumbing & Drain Cleaning Services
4.5(
563
)
Water Heater - Repair or Service

Serving Mount-hermon, CA and surrounding areas

In business since 2002

Emergency services offered

Warranties offered

"The plumbers from Superior Plumbing were excellent. They replaced and rerouted water pipes, changing from galvanized to copper pipes. The sewer lines in our house were repaired. They also replaced an aging hot water heater. The technicians arrived on time, worked diligently through the day, and were efficient. We added on the sewer repair which added an additional day. All work was completed within four days. I am impressed with their knowledge and workmanship. The technicians were tidy and removed all our old materials including the hot water heater. I would recommend Superior Plumbing and Drainage Co without hesitation."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time7 hrs
Response rate100%
Recommended by88%of homeowners
Avatar for Aleman Plumbing, Inc
Aleman Plumbing, Inc
4.8(
42
)
Water Heater - Repair or Service

Serving Mount-hermon, CA and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"Carlos was excellent explained every step cleared all of our problems for the agreed upon price on 57 year old plumbing.. I am very happy with my new kitchen faucet and drain and repaired shower drain... I will be calling this business for my plumbing issuse from now on as our other plumber finally retired.."
Sewer Camera
Attic Leak
Attic Leak
New SewerTrenhless Pipe
Trenchless Sewer

+8

Recommended by36%of homeowners
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Showing 1-10 of 60
FAQs for water heater repair or service projects in Mount-hermon, CA

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Mount-hermon, CA homeowners’ guide to water heater repair or services

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