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Top-Rated Tankless water heater repair pros in Black Diamond - Updated Nov 2026

Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.6(
1,470
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"Brian was on time and super knowledgeable for dealing with my tankless hot water heater. He got right to work and dealt with the problem and helped me establish a paper trail with the manufacture in case of any future warranty concerns."
Prep Area
Waterfall Finished!
Excavation jobs and more!
 install grease trap for commercial kitchen
Delivery of Shoring

+334

40 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Black Hills, Inc.
Black Hills, Inc.
4.5(
606
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"Curtis was friendly and efficient, performed the heater tune-up in just about an hour. Their service manager, Justin, visited the home also to verify grounding/bonding of the gas/water lines per new buyer s request. Great customer service from Curtis, Justin and the office reps!!"
Furnace
Heat Pump
Heat Pump
Furnace
Mini Split

+12

Response time1 day
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Dixon & Sons Plumbing LLC
Dixon & Sons Plumbing LLC
5.0(
8
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"Drake was superior in communication, efficiency and customer service. He explained all that needed to be completed with replacement of my water heater with ease and understanding. Will definitely call for all plumbing needs as they arise."
3 neighbors recently requested a quote
Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
50
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Install was on time and as described. '1st Response' did the job I expected for the water heater install. Good customer service for scheduling. Note that the Angie's list price of $799 only covers the installation of 50 gallon gas AO Smith hot water tank. Assuming you also do installation of new brass fittings, new flex lines and new expansion tank (which you should probably all do with the new water heater) it will cost an ADDITIONAL approx $500-600 (mostly labor costs). That's a competitive price but still, you should be aware that the original quote is just for the water tank install itself, nothing else. All-in-all they did a good job for a competitive price. A few months after the install, so far, I can say I would recommend them for this type of work."
Response time2 days
Response rate100%
Recommended by93%of homeowners
Avatar for Trusted Plumbing & Heating, LLC
Trusted Plumbing & Heating, LLC
4.2(
227
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2016

Emergency services offered

Warranties offered

"Trusted Plumbing and Heating Company rescued me. The technician was very knowledgeable and thorough. I needed adfitional work done outside of installing a water heater and the technician was able to provide a trusted resource. This made the job go really smoothly and in a timely manner. I will keep them in my phonebook for future references."
Clean out
Liner Trailer
Response time10 hrs
Recommended by88%of homeowners
Avatar for SIMBA SOLUTIONS CO LLC
SIMBA SOLUTIONS CO LLC
4.7(
19
)
Tankless Water Heater - Repair

Serving Black Diamond, WA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Absolutely fantastic service!!! Jason did an amazing job installing our new tankless water heater, and the whole experience was smooth and stress-free. He took the time to answer all our questions, made sure everything was set up perfectly, and left the workspace spotless. You can tell he takes pride in his work. We?re beyond happy with the results and grateful for the excellent service"
Simba plumbing
Simba plumbing
Simba plumbing
Simba plumbing
Simba plumbing

+29

1 neighbors recently requested a quote
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