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TRUSTED BY COTATI, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon20
    Verified water heater services reviews

Top-Rated Water heater pros in Cotati - Updated Nov 2026

Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
132
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Cotati, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Did a $59 consult only. Turned out the cost of repairing the old heater was almost as much as a new one, so we got a new one, and handled the install ourselves. Luis B was great, knowledgeable, friendly, didn't try to upcharge just to sell a heater, which we appreciated. Gave us an honest evaluation, several options, and was right on time. I will say, though, that the company failed to call me when he was on his way... not a big deal. All in all a good experience."
New Tankless Water Heater Installation
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time8 hrs
Response rate100%
Recommended by73%of homeowners
Avatar for Best Chance Heating and Cooling
Best Chance Heating and Cooling
5.0(
48
)
Water Heater - Install or Replace

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"Chance and his assistant replaced our water heater. It was located in the garage on a small platform. They were fast, friendly, and efficient and very fair priced! I will definitely invite Chance to our home for any future projects. Polite people!"
Mitsubishi air handler
Air handlers
Attic install
Old furnace
New furnace

+20

Response time8 hrs
23 neighbors recently requested a quote
Recommended by65%of homeowners
Avatar for Family First Service Plumbing
Family First Service Plumbing
4.9(
11
)
Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Cotati, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Andy came over to look at the water heater and told me what he would do and what needed to be done, it was 18 years old and out of code. He was here on time and did a great job and I liked him too. I would recommend Family First and would hire Andy again."
tankless
large water filtration
large water filtration
earthquake shutoff valve
40 gallon natural gas water heater

+1

Response time1 hour
Recommended by100%of homeowners
Avatar for True Blue Plumbing Co.
True Blue Plumbing Co.
4.6(
77
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Credit card accepted

"Marcell and True Blue Plumbing were a pleasure to work with. He was friendly and took pride in his work and client satisfaction. Marcell installed a gas line for me in Napa within the same week of providing the estimate, and he even helped me flush out my water heater free of charge. I will definitely use him for any future plumbing needs. My profession is a property manager and itâ s hard to find quality vendors like True Blueâ ¦Thanks again."
Response time7 hrs
26 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
101
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Jared showed up and wasted no time in doing two things at once (draining the hot water heater and repairing a small fireplace gas leak). He educated me a little on what he was doing which is always helpful. He was also careful to keep his booties on, so as not to ruin the shiny wood floors. Highly recommend based on this experience."
Response time2 days
5 neighbors recently requested a quote
Recommended by85%of homeowners
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 Cotati, 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

27 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 Cotati, 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

50 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 Cotati, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Green Core Heating & Air did an excellent job installing our new gas furnace and completely replacing the ductwork. The owner communicated clearly throughout the entire process and was always quick to answer questions. The crew showed up on time, worked efficiently, and kept everything clean during the installation. Pricing was very fair compared to other quotes we received. I would definitely recommend them to anyone needing HVAC work."
Air Conditioning Install
Harvest Thermal
Harvest Thermal
7 neighbors recently requested a quote
Avatar for BluDog Rooter & Plumbing Co.
BluDog Rooter & Plumbing Co.
5.0(
5
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+4 more

Serving Cotati, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

BluDog Rooter & Plumbing Co. is a local, family-owned and operated plumbing company proudly serving homeowners throughout Sonoma County. Formerly Yorkshire Plumbing & Drain Services, we’re the same local owners, team, and commitment to quality service—just with a new name.\n\nWith more than 20 years of construction experience and over a decade specializing in residential service plumbing, we believe in doing things the right way: honest recommendations, clear communication, quality workmanship, and treating your home with respect.\n\nFrom clogged drains and sewer problems to water heaters, leaks, gas lines, plumbing repairs, and installations, our goal is simple: make your plumbing problem a little less stressful.\n\nBluDog Rooter & Plumbing Co. is fully licensed and insured (CA License #1108627) and proudly locally owned right here in Sonoma County.\n\nYour home’s best friend.

Water heater install
Water heater installation
8 neighbors recently requested a quote
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Showing 1-10 of 133
Water Heaters FAQs, answered by experts

One of the primary benefits of a heat pump water heater is how cost-effective it is. How much you save will depend on your water usage and electricity costs. That being said, we can ballpark savings for the average home of between $100 and $500 per year. You can increase that savings rate by researching and applying available energy incentives available in your area. If you really want to focus on cost, consider a tankless water heater.

Not all types of water heaters require a venting system. Electric tankless water heaters don’t use natural or propane gas, so no venting is required. Instead, they use electric burners to heat water quickly and efficiently. However, any system that does use gas or propane will require ventilation.

No, you’ll need to drain the tank before changing a water heater element, as the water heater element sticks through the side of the tank and uses a gasket to prevent water from pouring out. However, you don’t always need to drain it completely. If you’re only replacing the upper heating element, you can drain the tank until the water line is below the element. If you’re replacing the lower element, you’ll need to drain the whole thing.

It’s important to find the type of water heater that fits your needs and budget. Depending on the type of water heater, size, brand, and the type of energy you use to heat the water, costs range from a few hundred dollars to several thousand. Some of the most common types of water heaters include:

  • Electric: $600–3,500

  • Gas: $700–$2,700

  • Propane: $700–$2,500

  • High efficiency: $1,500–$3,000

  • Indirect: $1,200–$3,500

  • Hybrid heat pump: $1,200–$3,500

A thermocouple is a pretty simple device. It simply tells the control valve if heat is present. Most water heaters can use a universal thermocouple, provided it's the correct length. Getting one that's long enough for your appliance is crucial for success. However, some water heater models require model-specific thermocouples, which is why it's essential to take your existing one to the store to find the right match.

The Cotati, CA homeowners’ guide to water heater services

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