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Top-Rated Tankless water heater repair pros in Mount Vernon - Updated Nov 2026

Avatar for SeaTown Electric Heating and Air
SeaTown Electric Heating and Air
4.7(
1,638
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Great communication throughout the entire process, informative friendly people from the office to the field. All safety precautions were taken during both the in home estimate and final installation of the water heater which was completed in under 4 hours. SeaTown are my new best friends!"
Seattle's Rewire Specialists
Generator
Tesla Chargers
Knob and Tube Removal
Ductless Install

+26

Response time1 day
3 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for BelRed Plumbing, Heating, Cooling, and Electrical
BelRed Plumbing, Heating, Cooling, and Electrical
4.1(
680
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1986

Free estimates

Warranties offered

"Bel Red is a good company, but their rates are high. We had a water leak in the wall that was difficult to locate. The repair person was very helpful in locating the leak, but the bid was very high for the fix. If I had a major plumbing job I might consider the company based on their customer service."
Jobs in our Community
Jobs in our Community
Jobs in our Community
Jobs in our Community
Jobs in our Community

+2

27 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for About Plumbing
About Plumbing
4.6(
66
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 2015

Warranties offered

Small jobs welcome

"Jordan came out and was very friendly and knowledgeable about my leaky waterheater. He took time to explain why it was leaking and advised me on how to keep the new one maintained. Jordan was very cautious and made sure his mask was on. I really appreciated that! He did an excellent job in installing a new one and made sure things were cleaned up when done. I would refer About Plumbing to anyone and will use them again when needed."
Sink Install
Water Heater
Pic3
Truck and Equipment
Response time10 hrs
30 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Air Plus
Air Plus
4.6(
51
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Milo was very friendly and accommodating. I hired him to do annual maintenance on my tankless water system as well as flush it out. He discovered that the pump run constantly and that shouldn’t be happening. The result is my house is always 80° if I keep it plugged in so I always keep it unplugged. He diagnosed that the pump needs to be replaced but wasn’t absolutely positive if that would solve my heating problem. He’s supposed to be getting me a bid on replacing the pump, but I haven’t heard back from him. I would probably hire him again."
Keep your furnace tip top
Electrical/motor, and components inspection
Dirty burner
Clean burner
Clogged filter

+19

Response time1 day
1 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,394
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

In business since 2013

Emergency services offered

Warranties offered

"The Seatown team did a great job. I got quotes from 3 different recommended plumbing services, but the Seatown guys were the only ones who recognized we would need to upgrade our gas meter. They did a great job explaining how to get this scheduled with PSE. The estimate Seatown gave was on par with some of the other plumbers, so we went with them. They sent 2 service people to come and install the tankless and the guys were just excellent. I expressed concern about mounting the water heater on the beams in our basement because Our house is so old, so they came up with a better solution. They built a small wall frame to mount the water heater. No extra cost. When they found there was no outlet wired near the heater they were able to get an electrician from Seatown to come out and wire one up while they worked on the water heater install. Seatown aldo had a good scheduling method, sent text reminders the day they were coming to do the work with a photo of the person who was coming and a short set of info about the person. It was a nice touch, and a thoughtful safety measure. They did a great job with the install which took several hours. I’d definitely hire them again."
Generator Repair
Additional Photos
Additional Photos
Electrical Panel Repair
Additional Photos

+44

Recommended by94%of homeowners
Avatar for Home Comfort Alliance
Home Comfort Alliance
4.7(
341
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"Everything went well and smooth with their help. I got the proposal with all details at the same day when they came to do the estimate. Our old furnace was built on 1971, and it was in a closet next to the water heater tank. When one other company came to estimate, they wanted to cut a furnace size hole on the wall facing the hallway to fit the machine and we have to find a constructor or handy man to finish, like to build a door or make it look good, but G&S figured out an easy way, which is to turn the machine toward another direction and eventually only cut a vent on the wall. It took two days for all the installation, and they cleaned up when they left and everything looked clean and nice. They also listened to customers. We didn't want the heat pump to be right next to the stairs of our deck, so they chose a spot which was few feet away from the closest spot without any question. We appreciate for that, since the wind blows out from heat pump is kind of strong, and we feel comfortable with where it is at now. One thing I really like is they were on time, and they called around 30 minutes ahead before them showed up. They also take care all the paperwork for the PUD rebate, Costco 10% shop card, and city permits, and all we do is waiting their call to arrange the time."
Additional Photos
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+1

Response time1 day
Response rate100%
Recommended by91%of homeowners
Avatar for Washington Energy Services
Washington Energy Services
4.5(
992
)
Tankless Water Heater - Repair

Serving Mount Vernon, WA and surrounding areas

In business since 1957

Free estimates

Emergency services offered

"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"
Window Installation
HVAC
Window Installation
HVAC
After1

+39

Recommended by92%of homeowners
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