Mainstream Electric, Heating, Cooling, & Plumbing has been providing excellent service to eastern Washington homes for over 20 years. Spokane Valley residents know that if they have a plumbing problem, they can trust Mainstream to come fix it quickly and efficiently.

Your water heater may not seem like a critical appliance… until it stops working! Trying to take a shower or even wash your hands without hot water is unpleasant, if not impossible. Contact us online or give us a call to get started, and we’ll have your water heater back to normal in no time.

Upfront pricing - you’ll never pay more than you’re quoted

Expert advice from professional, licensed & certified technicians

We'll only sell you what you need

We stock enough parts in our trucks to do 93% of repairs on the spot

We stand by all recommended services

Flexible scheduling, ask about same-day service!

Still have questions? Contact us for all your Furnace Installation questions!

Check out why your neighbors trust us to get the job done right

Very Efficient

Donovan was extremely professional, offered common sense solutions and completed the work in 1/2 day less than we were quoted! He even took the time to mortar set the tub even though the instructions from Delta said it wasn't required. The attention to detail showed and the new bathroom will be great because of their efforts!
Joshua W.


Cody was respectful, personable, courteous, answered all our questions we had during his visit, knowledgeable. Cody helped us get in touch of the appropriate people, to finance the work that our home needs. He helped get the work scheduled so that we wont need to wait longer to get the work taken care of.
Crystal N.

Best service

Crew was very efficient and knowledgeable. Replaced HVAC with next day service for first responders. System is working well and installed superbly. Will give it a run for a while to better judge but it is a quality name Lennox system. 10 year parts and service so expect there will be no problems. Good job!
Michel C.

Great Service

We had some plumbing work done by Mainstream. The plumber (Sam) they sent out was GREAT. He listened to what we wanted done; gave us advice about things that could become issues and was very conscientious. We took his advice about our 15+ year old water heater and replaced it. My husband raves about how great it is to have really hot water. We plan to have Mainstream do work for us in the future.
Theresa J.

Highly Recommend

The entire team was very responsive and nice. Handled scheduling quickly. Process was clearly outlined at multiple points in the job to ensure expectations were being met. Took 48 hours from time I reached out to complete issue resolution. Highly recommend
Jennil C.


Jaymin was very professional and friendly. Was knowledgeable and got right down to business. Did a great job! He deserves a KUDOS!! 👍 Daryl was also very professional and friendly. He was knowledgeable and explained the problem very clearly. He's also a good salesman! KUDOS to him, as well!! 👍
Judy W.


Our water heater was making noises it shouldn’t. Chandler was professional and very knowledgeable. He educated us on the issues and answered all of our questions. I recommend this company.
Lance U.

No Upsells

He was very nice, friendly, and professional, fixed my bathroom sink which I had not used for several months. He did ask about several other plumbing related issues, but never pressured or upsold me, was very happy with the experience
Benjamin C.
Read all our reviews

How do you know you need water heater repairs?

Other than not having hot water, what are the telltale signs?

Water temperature is too cold or too hot

Temperature variance in either direction can be a sign of a water heater on the fritz. Water heaters rely on thermometers to regulate water temperature, so scalding hot water can be as much of a water heater issue as freezing cold water.

Hot water has a bad odor

If you notice an odor that only shows up when the hot water is on, you may be dealing with bacteria build-up in your water heater. This is not always an issue that requires repair or water heater replacement; call Mainstream at (866) 411-9277 to learn more about our water treatment and filtration services.

Visible issues with water heater (rust, leaking water, etc.)

If you’ve identified obvious problems with your water heater, from leaking water to rust or any other problem, don’t hesitate to contact us! We’ll come diagnose the problem and give you an estimate for repair services (or recommend a water heater replacement if necessary).

Special Offers in Spokane Valley, Washington

$79 Off Any Repair

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Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

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