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

Avatar for Platinum Plus Plumbing
Platinum Plus Plumbing
4.7(
424
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Emergency services offered

"Matt came out and replaced both of my 50 gallon water heater with a state of the art tankless. He beat the competitors price and get the job done in a few hours. Really great work and now we have a great new system and will have lower gas bills. Win, Win, Win!"
Jim
Tankless
Water heaters
Tankless
Tankless

+4

Response time4 hrs
120 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Beutler Air Conditioning & Plumbing
Beutler Air Conditioning & Plumbing
3.8(
131
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved (Corporate)

In business since 1956

Free estimates

Warranties offered

"August 25, 2026 Rated 5/5, I am writing to express my appreciation for the excellent customer service provided by Horacio Parker, a plumber with Beutler Air Conditioning and Plumbing. On August 25, 2026, water was leaking from my water heater onto the garage floor. Mr. Parker responded promptly, listened attentively, and showed patience, empathy, and understanding of my concerns. He was courteous, polite, friendly, and maintained a professional, positive attitude throughout the service call. Mr. Parker shut off the power and water, drained the old 75-gallon Bradford White water heater, and installed a new 75-gallon Bradford White Energy Saver water heater. He communicated clearly and showed me how to shut off the water to the house and turn off the water heater to help prevent future flooding. Mr. Parker is an asset to Beutler Air Conditioning and Plumbing, and any company he provides service to Lovevasia Bey"
Drain Cleaning
22 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Honest Sewer & Drain, LLC
Honest Sewer & Drain, LLC
5.0(
21
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"We needed all the pipes replaced in our house. We also switched to a tankless water heater. Dustin came to give us an estimate and advise when they could start the project. We had gotten a couple of estimates but something just felt different with them. We liked that we received an email with who would be coming to give us an estimate as well as a picture of the technician we should expect. It was so refreshing working with this company it reminded me of company's 50 years ago with values and a caring staff. Dustin, Mike and Anatoily had what I will refer to as the three P's. They were professional, punctual and personable. They laid drop cloths and cleaned up everyday after themselves. They even finished the job a day early than projected as we were scheduled to go out of town for five days. I would highly recommend Honest Sewer & Drain. By the other positive reviews you guys are doing a fantastic job. Keep up the good work and it was a real pleasure doing business with you."
Hidden Tankless Water Heater
Pipe Fusing
Water Heater Replacement
After Epoxy Lining
Tankless Water Heater Installation

+50

Response time5 hrs
Response rate92%
40 neighbors recently requested a quote
Avatar for Peter Levi Plumbing, Inc.
Peter Levi Plumbing, Inc.
4.9(
9
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

We are a family-oriented company that has been committed to taking care of our team, customers and community since 1993. Our highly trained technicians are focused on providing the right options, to make sure you are focused on providing the right options, to make sure that you are 100% satisfied with every solution we deliver. Our goal is to give you peace of mind in knowing, that it comes to plumbing, heating and air needs - we'll always take care of it, because we are here to take care of you.

My jobs
My jobs
My jobs
My jobs
My jobs

+1

Response time2 days
4 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Connected Plumbing
Connected Plumbing
5.0(
5
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Connected Plumbing proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

1 neighbors recently requested a quote
Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"It went very well; the thorough HVAC system checkup revealed some questionable component that were best suggested to be replace with new ones. I am not confident that my HVAC system is set for more that good performance going forward. I appreciated the non-pressured advice and suggestions in coming to my decisions. Thank you, Joaquin Ortiz."
7 neighbors recently requested a quote
Recommended by70%of homeowners
Bonney Plumbing, Sewer, Electrical, Heating & Air
4.5(
1
)
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved

In business since 1978

Free estimates

Credit card accepted

Bonney Plumbing, Electrical, Heating and Air, has been your local, reliable service company since 1978. As an A+ rated member of the Better Business Bureau, we have worked hard to build our reputation by providing you with top notch technicians, superior products and exceptional customer service. We have serviced thousands upon thousands of satisfied, loyal customers and are so pleased to earn your referrals. You can count on Bonney for quick, reliable service and repair for your plumbing, electrical, heating and air conditioning needs. \n

Recommended by100%of homeowners
Avatar for E & J THOMPSON LEGACY INC
E & J THOMPSON LEGACY INC
New to Angi
Tankless Water Heater - Install

Serving Cool, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Signature Plumbing is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Shower Water Line
Drain Rough-In
New Shower Valve
Shower Drain
Rough-In Plumbing

+7

1 neighbors recently requested a quote
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