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Top-Rated Water heater pros in Lagunitas-Forest Knolls - Updated Nov 2026

Avatar for Moore Home Services
Moore Home Services
4.4(
225
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Was selling my apartment and wanted to service heater prior to listing. Moore provided great technicians who tried everything they could to reset and fix some mechanical issues. Provided lots of info and updates while they worked, showed me everything they were doing, where problems were, etc. In the end, the heater was too far gone and a whole replacement was recommended. Moore was able to schedule the replacement within a week. Whole project was completed in 4.5 hours and came in under their initial estimate. 10/10 would recommend them to all friends and family."
After 1
 View 1
 Right Side View
Perfect Retrofit
After 2

+15

22 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for DOKE'S PLUMBING HEATING & COOLING
DOKE'S PLUMBING HEATING & COOLING
5.0(
5
)
Water Heater - Install or ReplaceTankless Water Heater - RepairWater Heater - Repair or Service+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

DOKE'S PLUMBING HEATING & COOLING is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

AC System
Testing
Water Heater
Water Heater Install
Heat Pump

+13

51 neighbors recently requested a quote
Avatar for Green Core Heating & Air
Green Core Heating & Air
5.0(
8
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Green Core Heating & Air is a family-owned, locally run heating, cooling, and water heating company based in Petaluma, serving homeowners across Sonoma and Marin counties, plus Napa and San Francisco.\n\nWe install, repair, and maintain furnaces, central air conditioners, heat pumps, ductless mini splits, and ductwork, and we're a Harvest Thermal installer. We also replace and repair water heaters of every kind: gas and electric tanks, tankless, and heat pump water heaters, with same-day replacement when our schedule allows.\n\nEvery job starts with a free estimate, clear written options, and equipment sized to your home. Our crews show up on time, protect your floors, and leave the space clean. Named Best of the North Bay 2026 by the Bohemian. Call (707) 988-5858; our phones are answered 24/7.

Air Conditioning Install
Harvest Thermal
Harvest Thermal
7 neighbors recently requested a quote
Avatar for Marin Plumbing, Brian S. Cooke Enterprises
Marin Plumbing, Brian S. Cooke Enterprises
4.4(
24
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 1991

Emergency services offered

Warranties offered

Marin Plumbing is a locally owned, full-service contractor that has been serving the area since 1991. We offer expert installation, maintenance and repair services by highly skilled specialists. We will deliver a good plumbing experience to you - we want to be your plumber forever.\n\n

the work force
Recommended by85%of homeowners
Avatar for GOLDENLINE PLUMBING LLC
GOLDENLINE PLUMBING LLC
5.0(
15
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"This company replace my water heater, and sink problems with leaking pipes,I am very satisfied with my overall experience with this company, before I agree to do the job with them staff was very friendly, professional and happy to answer all my questions, price was very fair and budget friendly, job was do very fast, very professional and clean , I recommend their services to everyone, you will not get disappointed."
Tankless Water Heater
House Filtration System
Earthquake Valve Install
Roman Tub Faucet
My jobs

+5

1 neighbors recently requested a quote
Avatar for Abdel's Home services
Abdel's Home services
5.0(
9
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, 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 Peter Levi Plumbing, Inc.
Peter Levi Plumbing, Inc.
4.9(
9
)
Tankless Water Heater - RepairTankless Water Heater - InstallWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

We are a family-oriented company that has been committed to taking care of our team, customers and community since 1993. Our highly trained technicians are focused on providing the right options, to make sure you are focused on providing the right options, to make sure that you are 100% satisfied with every solution we deliver. Our goal is to give you peace of mind in knowing, that it comes to plumbing, heating and air needs - we'll always take care of it, because we are here to take care of you.

My jobs
My jobs
My jobs
My jobs
My jobs

+1

Response time2 days
4 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for GoFlow Plumbing
GoFlow Plumbing
5.0(
7
)
Water Heater - Install or ReplaceTankless Water Heater - InstallWater Heater - Repair or Service

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Your plumbing problem becomes our problem to solve.\n\nThat’s not just a tagline, it’s how we operate. When you call GOFLOW, you’re getting a team that knows this area, knows plumbing, and genuinely cares about doing the job right.\n\nWe’re not a franchise. We’re not a call center routing you to whoever’s available. We’re a local company built by plumbers who got tired of watching customers get treated like transactions instead of people.

Kept existing config
Min visual impact
Moen Flo Install
Backflow Preventer
Backflow Preventer

+2

33 neighbors recently requested a quote
Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"The water heater repair was $400 and they wanted to charge us the $300 for the bathroom leak, but we told them it was ridiculous because the guy was only here for 5 minutes. They ended up crediting us some money back so they handled that really well. Less than 2 days later the water heater broke. They did not send out the same guy. They guy they sent out was really great, he walked us through every minute and dime he spent. He told us not to worry and that we were getting our money's worth. We've used them many times over the last 7 years. Once it was Christmas Eve and the hot water heater was having problems and they came out and repaired it for free. Then there was another time that I needd a $6,000 repair and I didn't have time to get estimates, but I trusted their work. The work has been quality, I think in the future with them I will ask them upfront for an assessment and not pay them until they start doing the work."
10 neighbors recently requested a quote
Recommended by70%of homeowners
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Showing 1-10 of 87
Water Heaters FAQs, answered by experts

Electric water heaters use a high amount of electricity, so they’re best for homeowners who subsidize their electric bill with solar or who live in an area with inexpensive electricity. For others, gas water heaters versus electric water heaters may be the more cost-effective solution, with the added bonus of heating water quickly and efficiently. No matter which you choose, you can lower your water temperature as low as possible to keep costs down.

Every type of water heater has its advantages and disadvantages. Understanding those can help you decide the best type for your situation and budget. 

Pros

  • Safer than gas or propane

  • Doesn’t require extensive venting systems

  • Lower upfront costs

  • Simpler to operate

  • No pilot light

  • Easier installation

  • More efficient heating than gas models

  • Available as point-of-use (POU) and whole-house units

Cons

  • Slower to heat water

  • Longer recovery time

  • Possibly higher operating costs

  • Doesn’t work during a power outage

  • Costs can increase without a 240-volt connection

When the water expands in a hot water heater, it puts pressure on your hot water pipes and can cause leaks or a rupture in the hot water tank under certain conditions. Pipes or water heaters may split due to the pressure where there is a backflow preventer that prevents the hot water heater from diffusing pressure by releasing water back to the public water line.

In these scenarios, a hot water heater expansion tank provides a place for the hot water heater to relieve pressure and prevent bursts and leaks.

Unusual noises, lack of hot water supply, efficiency loss, and visible leaks are signs of necessary replacement beyond mere repair.

Flushing biannually, checking the anode rod, and temperature settings maximize equipment lifespan while reducing surprise costs.

The Lagunitas-Forest Knolls, CA homeowners’ guide to water heater services

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