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Top-Rated Tankless water heater installers in Oak Park - Updated Nov 2026

Avatar for R.A. Mechanical, Inc.
R.A. Mechanical, Inc.
4.7(
363
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"They were able to assess the job with a couple of photos to recognize the old power-vent heater I had and what a replacement would cost. We discussed options, and they could upgrade me to a tankless heater for a relatively small increase. Was in and out fairly quickly and we were very satisfied with the new tankless."
Misc
Misc
Misc
Misc
Misc

+63

Response time5 hrs
365 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for All Affordable Plumbing Inc
All Affordable Plumbing Inc
4.9(
178
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Emergency services offered

Warranties offered

"Horatio and his team took my "sump pump turns on every minute, don't know where all this water is coming from" issue to their heart which is heartwarming to experience. They diagnosed the problem by spending like 4 hours at my place and when we could not figure out the exact cause, they did help narrow it down to being either a broken intake pipe or high water table. They also put a temporary reroute for ground water to rule out any issues with the sewer line which is the case sometimes. They replaced one of my broken sump pump too for a reasonable price."
Pipe was completely packed! Drain cleaning was not going to do the  job here!
Master Bath - Chicago
Geberit wall mounted toilet carrier installed. Wall mounted faucet installed. Hall Bath.
You can see the crud inside the pipe accumulated over 60+ years!
Old Broken Clay pipe just outside the foundation wall.

+41

Response time11 hrs
Recommended by96%of homeowners
Avatar for Plumb It Best LLC
Plumb It Best LLC
4.8(
254
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"After buying a water heater at Menards and getting it home, I called Plumb-it Inc about 1:30 p.m on a Monday. I think it was Scott who answered (no recorder!) and he said he could have 2 guys out to our house within 45 minutes to install it. The job went so smooth. They did arrive within 45 minutes. The 2 guys were very knowledgeable about installing a heater. They were efficient, quiet, polite and cleaned up afterwards. They also took the old heater and the box the new heater came in. What more could we ask for? They did everything we expected."
Drain Cleaning
New Sump drain
Closet Bathroom
Response time1 day
Response rate93%
1 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,299
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"It couldn’t have gone better! Carl was experienced, knowledgeable and friendly. Plus, he smelled gas which is why he replaced the valve on my water heater. It was a great visit!"
Additional Photos
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Additional Photos
Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for A-1 Patrick's Sewer & Pipe Services
A-1 Patrick's Sewer & Pipe Services
4.5(
189
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Patrick was very responsive to my texts relates to product information and quotes. He is very knowledgeable about the trade and he is great with customers. His service was prompt and the installation went smoothly. After the installation, I referred another friend to Patrick on water heater replacement."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time2 days
Response rate100%
1 neighbors recently requested a quote
Avatar for White Star Sewer and Drain Services
White Star Sewer and Drain Services
4.7(
15
)
Tankless Water Heater - Install

Serving Oak Park, IL and surrounding areas

Approved

In business since 2021

Warranties offered

Credit card accepted

At White Star Sewer and Drain Services, we are a small, local plumbing company that believes in honest work and reliable service you can count on. Whether it’s fixing leaks, installing new fixtures, or tackling bigger plumbing jobs, we’re here to get it done right the first time.\n\n$75 travel fee for quotes/consultations, Fee is waived if you move forward with the work .\nAll our jobs come with a one-year guarantee on parts and labor (just keep in mind it’s void if the work is altered or abused). We are NOT responsible for framing, drywall, painting, flooring/tiling, or any plumbing issues outside of the services we provide.\n\nWe take pride in helping our community one home at a time, with fair prices, friendly service, and plumbing you can trust.

Response time10 hrs
2 neighbors recently requested a quote
Recommended by90%of homeowners
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