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

Avatar for Nathan's Plumbing INC
Nathan's Plumbing INC
4.5(
8
)
Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Greenfield, CA and surrounding areas

Approved

In business since 2018

Credit card accepted

Offers commercial services

"Great experience with this plumbing company! They did the plumbing for my garage conversion into an ADU. They were professional, reliable, clean, and finished everything on time. Their pricing was competitive and the quality of their work was excellent. I would definitely recommend them!"
Water heater replacement
158 neighbors recently requested a quote
Recommended by25%of homeowners
Avatar for Legacy Plumbing And Heating
Legacy Plumbing And Heating
5.0(
19
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Greenfield, CA and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Legacy plumbing provided us with excellent customer service, professionalism & knowledgeable skill set. When I called Drew, he returned my call right away. He answer all my questions. Drew scheduled the tankless water heater conversion right away that fit our schedule. Legacy plumbing also has great prices !! We have built & remodeled several homes and consider Legacy at the top of our contractors list for plumbing."
Additional Photos
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+4

Recommended by100%of homeowners
Avatar for Aleman Plumbing, Inc
Aleman Plumbing, Inc
4.8(
42
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+2 more

Serving Greenfield, CA and surrounding areas

In business since 2014

Emergency services offered

Warranties offered

"Aleman Plumbing contacted me right away for an appointment to look at my water heater. Their quote was advantageous compared the the other I received and they were able to schedule the work immediately. My water heater was in a difficult location and I also needed to replace a pressure control valve but Carlos got it all done very well and was great to work with."
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 Aleman Plumbing, Inc
Aleman Plumbing, Inc
4.8(
42
)
Tankless Water Heater - Install - For BusinessTankless Water Heater - RepairWater Heater - Repair or Service

Serving Greenfield, CA and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"The plumber can over the same day and examined what needed to be done. Installation of a leak detector. A quote was generated and it was approved. The plumber arrived on time Sat morning and had everything ready to go. Well organized. Work was completed on time and we only had to have the water off for 2 hours. Not cheap but reasonable/competitive and they show up and get it done."
Sewer Camera
Attic Leak
Attic Leak
New SewerTrenhless Pipe
Trenchless Sewer

+8

Recommended by36%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Greenfield, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Finally an honest Solar company!! I went through several companies trying to get quotes for one of my properties, either they were ridiculously expensive or they didn't return my calls. A friend of mine referred me to Mega Sun and I have to say I am very pleased. Within a couple days from the initial phone call I already had an estimate and once i decided to go with them the installation was completed in one week. Its been a little over a month since they completed the install and everything is working smoothly.

I was amazed at just how great the customer service was. I just want to say thank you to the whole team who helped out, I really appreciate all your hard work. Now I know you guys are the ones to call for all future jobs."
Additional Photos
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+32

Recommended by100%of homeowners
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Water Heaters FAQs, answered by experts

Depending on the brand of water heater, you may need to install an expansion tank in order to meet the conditions for warranty coverage. It’s important for consumers to read the fine print of the warranty to see if an expansion tank is necessary. Even if an expansion tank isn’t required for the warranty, it’s usually mandated by building codes—although not for tankless water heaters.

In most municipalities, a license is not mandatory for water heater installation or replacement. However, we strongly recommend hiring a licensed plumber or water heater installer to handle the work. Licensed installers are far less likely to make a mistake during the installation, which means paying for the experience decreases your risk of a leak and other issues. You can use our state licensing tool to find out if a contractor you’re considering in your area holds a plumber’s license.

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.

Homeowners insurance may cover the repair or replacement of a water heater if it's damaged by a covered peril, such as a fire or a burst pipe. However, policies typically do not cover repairs or replacement needed due to normal wear and tear, old age, or lack of maintenance. For these issues, a home warranty or a manufacturer's warranty may provide coverage. While the policy might not pay to fix or replace the malfunctioning appliance itself, it often covers the cost of water damage restoration caused by the faulty water heater. Always check with your insurance provider to understand the specifics of your policy.

Venting a gas water heater out of the roof is preferable in most cases. Heated exhaust gases naturally rise, so a vertical vent pipe is efficient. If you’re trying to vent through a pipe exiting a wall, the angle of the pipe may be more horizontal than vertical, making the venting system less effective. If you go through a wall, you may need to add a fan to ensure a successful expulsion of the gases outdoors.

The Greenfield, CA homeowners’ guide to water heater services

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