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

Lake County Plumbing
5.0(
3
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Middletown, CA and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"He is very friendly, efficient and professional. He has follow through on projects, persists in solving the issues. He has installed a water tank, pump, boiler and drip system for me. He is very versatile."
Response time8 hrs
Recommended by100%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 Middletown, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

Founded in 2000, for over 20 years Mega Power has been one of the premier solar companies in all of California, including many cities like Los Angeles, Riverside, Santa Clara, Granite Bay, Van Nuys, San Francisco, San Jose, Pasadena, Sacramento. Complete customer satisfaction, personalized approach and attention to details are our company’s intrinsic core values. We are providing the highest quality service as we enable our customers to save money, increase their property value and help improve the environment. Our team of certified professionals takes genuine pride in giving smooth, practical, Eco-friendly and positive solutions to our residential, commercial and industrial customers’ needs. All equipment and services meet both National Electrical Code requirements and local building codes. Mega Power offers a range of options toward green and energy-efficient solutions to all electrical power needs. We have extensive experience in building a complete solar panel system of all sizes on the roof or on the ground. Mega Power installs them with interconnection to the utility provider so that you could successfully sell excess electricity.

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+32

Recommended by100%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Middletown, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Ezra at Landmark construction energy crew is a perfect company in my book! I honestly recommend Ezra and his team of plumbers, because he his honesty and integrity, qualities that are sadly hard to find these days! Ezra was extremely helpful and knowledgeable about the tankless water heater system that we installed, and he was kind enough to come over and take a look at our new unit after it was installed and to check with us that the monthly bills came down as well. In addition to that, Ezra installed our new tankless water heater with the remote control that connects outside the tankless water heater. Because the remote control was not waterproof and if it will be installed inside the water heater, it would short circuit if it got wet enough. Thank you Ezra for going above and beyond for a "customer" who didn't even get to use you! Much appreciated. I will definitely be using Landmark construction energy crew to service my new tankless water heater when it needs it!"
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Honest Handyman
4.6(
89
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Middletown, CA and surrounding areas

Free estimates

Emergency services offered

"Very professional! Called on same day I made inquiry and was able to do the work the same day, even in 100 degree heat! Very fair price. I highly recommend Joshua if you need a handyman - he picked the right name for his business, as he is definitely an "Honest Handyman". Thanks again!
"
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Recommended by96%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Middletown, CA and surrounding areas

In business since 1971

Credit card accepted

"Service guy came as scheduled. Sent his "service" requirements to home base Home base calls back and lists, a very long list of what needs to be done and a very long list of what is not covered and what each item costs. The overall cost was outrageous and they weren't willing to give it to me in writing. Everything I had to pay for was overpriced, of course! They told me my other option would be to purchase my own water heater and they would reimburse me for what there water heater would cost, but no reimbursement for Labor, building permit, or any upgrades required by the local building department. The requirements of the building department were minimal. I went to Home Depot and had them do the installation and saved many hundreds of dollars. Lesson learned, have AHS do simpler repairs that don't require municipal building department approval. Have AHS pay for the equipment, and purchase installation from a trusted local installer."
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+2

Recommended by65%of homeowners
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Water Heaters FAQs, answered by experts

If your water heater is about to celebrate the big 2-0, you may want to consider sending it off to greener pastures. While the water heater may seem to be working well, any conventional, tanked water heater over 10 years of age is at risk of failure. If your water heater is 20 years or older, your best move is to replace your aging heater before it completely breaks down.

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.

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.

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

Installing a water heater without a permit can result in high fines—as much as hundreds of dollars per day, in some areas. It can also void your homeowners' insurance and cause problems when selling your home because it violates local building codes and safety regulations.

The Middletown, CA homeowners’ guide to water heater services

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