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Top-Rated Tankless water heater installers in Longview - Updated Nov 2026

Avatar for Summerson Plumbing
Summerson Plumbing
4.8(
40
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Ryan and Matt were awesome. Matt was very quick on replying to my quote request and getting me a price. Once I chose them for my water line replacement, they moved quickly. Ryan was great while on the job site; kept me updated on what was going on, answered my questions, explained why they used certain products, etc. Matt was there off and on throughout the morning and he was very good to work with as well. They use Steve from Evergreen Boring LLC and he was really great to work with as well. I will be using them again for additional plumbing projects. Their price was very competitive to other plumbing companies."
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Granite Plumbing Services LLC
Granite Plumbing Services LLC
5.0(
7
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

Approved

Free estimates

"Lane and his helper (sorry I can’t remember name) from Granite Plumbing removed a heating oil tank from basement that was over 1/4 full , drained tank and removed. Very professional, quick and careful. There clean up was immaculate. I appreciate that he was able to adapt to my schedule and come so quickly. I will be contacting Lane for future jobs. I would recommend Granite Plumbing. Thank you Lane"
30 neighbors recently requested a quote
Avatar for Legacy Plumbing and Excavation, LLC
Legacy Plumbing and Excavation, LLC
4.5(
85
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I had a Clorox toilet scrub pad stuck in the toilet. I was concerned about the problem it may have caused. Nolan came out and look at the problem. He flushed the toilet a few times and apparently the scrub pad may have gone down the sewage. To be sure, he also used his endoscope to look at the outside sewage line to confirm the water is flowing smoothly. There was no charge for coming out for his evaluation. I really appreciate his honesty, rather than just trying to make a few bucks. Thank you."
Sewer Repair
Excavation & Sewer
Response time9 hrs
Response rate95%
879 neighbors recently requested a quote
Avatar for Rossco Plumbing
Rossco Plumbing
4.3(
12
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We had Rossco Plumbing out to install a water heater that had gone out, They also Installed a whole house filter that we have been wanting to get done!! Thank you Rossco Plumbing for your prompt help getting us hot water! You and the team are our go to plumbers going forward!!"
Response time9 hrs
127 neighbors recently requested a quote
Recommended by37%of homeowners
Avatar for J&M Services
J&M Services
4.9(
294
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

In business since 2008

Free estimates

Warranties offered

"They were professional and courteous and worked hard to get it clean. It took longer than expected because the previous owners hadn't cleaned the ducts in a long time. But I still got a great deal with the coupon offered on Angie's list."
Additional Photos
Recommended by95%of homeowners
Avatar for Simpson Plumbing, LLC
Simpson Plumbing, LLC
4.6(
128
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"They called me when they were on their way to my house and arrived promptly. They fixed everything quickly and explained the problem to me. They also visibly checked the water shutoff in the house, in the garage and talked to me about the efficiency of these, or inefficiencies."
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+8

Recommended by90%of homeowners
Avatar for All County Plumbing LLC
All County Plumbing LLC
4.7(
56
)
Tankless Water Heater - Install

Serving Longview, WA and surrounding areas

In business since 1994

Free estimates

Emergency services offered

"It went very well. It has been working just great and I didn't have to replace it. He was very helpful and I now have hot water. The woman on the phone I spoke with seemed very helpful as well. I will call them when I need a new water heater. I only had to pay for a service call and 2 small parts which is great."
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Recommended by92%of homeowners
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