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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon74
    Verified water heater services reviews

Verified Reviews for Water Heater Service pros in Moraga, CA

*The Angi rating for Water Heater Service companies in Moraga, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

*The HomeAdvisor rating for Water Heater Service companies in Moraga, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

Last update on March 14, 2026

Find Water heater pros in Moraga

Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
110
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Moraga, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Water Heater Masters were top-notch! I called on a Saturday afternoon - they were available 9am Sunday morning to come and inspect and quote. They only had one guy working that day, but scheduled me for Monday morning between 8 and 9. At 8:15am I got a call with an ETA of 8:45, which was a really nice touch! Despite telling me it would take an entire day to install, they were done by 1pm. They also found some creative ways to do the install to avoid drilling through my stucco (for the exhaust vent and for the condensate run-off). Very professional and clean-looking install. These guys may not always be the cheapest around, and they recommended a top-of-the-line heater (which is what I really wanted anyway), but I'd much rather pay a little extra for that level of service and support. Thank you!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time9 hrs
Recommended by95%of homeowners
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Avatar for Water Heater Boys, LLC
Water Heater Boys, LLC
5.0(
21
)
Tankless Water Heater - InstallWater Heater - Install or Replace

Serving Moraga, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Warranties offered

"The Water Heater Boys are true professionals! They were able to help me the same day as advertised! I highly recommend them!"
Tankless Install
75gal Bradford White
Response time2 hrs
Response rate100%
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Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
131
)
Tankless Water Heater - InstallSolar Water Heater System - InstallTankless Water Heater - Install - For Business+6 more

Serving Moraga, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Perfectly. They cleaned everything up, explained how the system worked and how often it needs attention, and hauled away the old hot water heater. They arrived on time, worked steadily, and finished before dinner time."
New Tankless Water Heater Installation
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
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Avatar for Cali Water Heater & HVAC
Cali Water Heater & HVAC
4.8(
30
)
Water Heater - Install or ReplaceTankless Water Heater - InstallWater Heater - Repair or Service - For Business+2 more

Serving Moraga, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"Dan and the team did a great job on our Rheem heat pump water heater installation. They were quick, thorough, clean and the new water heater works great! I?d definitely use Cali again!"
Response time6 hrs
Response rate94%
39 neighbors recently requested a quote
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Avatar for All Water Heaters & Plumbing LLC
All Water Heaters & Plumbing LLC
4.4(
202
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Moraga, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1997

Free estimates

Emergency services offered

"They came back for free after the job and re-lit the pilot of our water heater, which I appreciated, and I would use them again."
Noritz Tankless
Noritz Tankless
Noritz Tankless
Rinnai Tankless
Rinnai Tankless

+20

Response time7 hrs
Response rate87%
82 neighbors recently requested a quote
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Avatar for Beaver's Construction Company
Beaver's Construction Company
4.5(
170
)
Tankless Water Heater - InstallWater Heater - Install or Replace

Serving Moraga, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1976

Free estimates

Credit card accepted

"I needed a new water heater for our rental. Dan was able to give me the estimate over the phone. He was on time and professional."
Response time7 hrs
Response rate100%
Recommended by94%of homeowners
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Avatar for Just In Time Water Heaters
Just In Time Water Heaters
4.9(
9
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+1 more

Serving Moraga, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Great service. The technician came early and replaced the water heater in a few hours. Was very professional and knowledgeable"
Water Heater Repair - Defective Damper Switch
Tankless Install
Expansion Tank
New water heater
New Installation

+9

Recommended by62%of homeowners
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Avatar for Tankless Plumbing Solutions
Tankless Plumbing Solutions
4.9(
34
)
Tankless Water Heater - Install

Serving Moraga, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Tony was informative, communicative, on-time and he did a great job replacing my water heater!"
Rinnai
Rinnai
Rinnai
Rinnai
Rinnai

+10

Response time4 hrs
Response rate97%
11 neighbors recently requested a quote
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Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
721
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Moraga, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"The first visit lead to cleaning the area around the heater and burners and checking the thermocouple. Sadly that seemed to make it worse. Less than a week later No hot water for over 30 hours till the second technician replaced the thermocouple. All is perfect now. No charge for the second visit. The next step, if needed will be a tankless and their quote looks a bit steep. But I am really hoping I won’t need to go that far."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
42 neighbors recently requested a quote
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Avatar for BCMN
BCMN
4.6(
111
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Moraga, CA and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"This company was professional and came out right away. I needed a new water heater and it was put in the next day. Very competitive pricing.They did an excellent job. I only have good things to say about them and would definitely hire them again."
Response time4 hrs
3 neighbors recently requested a quote
Recommended by75%of homeowners
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Showing 1-10 of 195
Water Heaters questions, answered by experts

No. Expansion tanks must be installed on the supply side (where heated water flows out) of the boiler. There’s also a list of other requirements for most boilers, including being above the pressure relief valves, being on the inner side of any circulator, and more. Your installation manual should have more information on expansion tank installation requirements and what sort of tank the system is made for.

Due to the high temperature, using stainless steel vent pipes for your tankless water heater’s exhaust vent is best. Also, it is safe to use a flexible vent duct as the exhaust fan. If installing the exhaust fan yourself, make sure you are using heat-resistant silicon to connect the exhaust vent and the duct on your water heater.

Most hot water heater manufacturers recommend replacing the anode rod about once every three to five years. Anode rods sacrifice themselves by collecting iron, limestone, and other minerals that would otherwise corrode your hot water heater tank. This abuse wears them out long before your water heater does. Check the rod when you remove it and replace it if more than 50% of the metal has been consumed. Check the rod more frequently if you have hard water or use a water softener. 

If you are having trouble determining the right breaker size for your water heater, it is a great idea to contact an electrician near you to help. They can help you determine the best option for your home and install the circuit breaker for you, ensuring that you have all the proper permits and that your circuit breaker won’t overload, which could lead to fire and other damage.

The time it takes to install or replace a water heater depends on the type of heater and the complexity of the job. A professional can typically replace a standard tank-style water heater in one to three hours. However, if the work area is tight, such as a small closet or crawl space, the job could take four to five hours. Replacing an existing tankless unit takes about two to three hours, while upgrading from a tank-style to a tankless water heater is more complex and can take four to six hours. The project will take longer if you are switching fuel sources, such as installing a gas heater which can add about an hour to the timeline, or if the unit needs to be relocated.

The Moraga, CA homeowners’ guide to water heater services

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

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