Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Tankless water heater installers in Caldwell

Avatar for Red Van Plumbing & Heating

Red Van Plumbing & Heating

PO Box 730
4.61(
59
)
Approved Pro

Red Van Plumbing & Heating

PO Box 730
4.61(
59
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
18 local quotes requested

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumers' needs. It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Beyond rude "

Becca D on February 2025

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumers' needs. It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Beyond rude "

Becca D on February 2025


Avatar for Garden State Water Heaters

Garden State Water Heaters

15 Shipman Place
4.64(
428
)
Approved Pro

Garden State Water Heaters

15 Shipman Place
4.64(
428
)
Approved Pro
Super Service Award
Customers say: Super punctual
192 local quotes requested
7 years of experience

Our experience is serving our customers with 100% satisfaction on every project we take on. We will give you the peace of mind you need and deserve. Garden State Water Heaters, happily services the community with integrity, professionalism, and competitive pricing. We are fully licensed and insured, and have built a reputation for quality work with each satisfied customer. Thank you for the opportunity to introduce you to our company.

"Came over right away to view the project, accepted his quote, and installed the next day."

Lawrence B on July 2025

Our experience is serving our customers with 100% satisfaction on every project we take on. We will give you the peace of mind you need and deserve. Garden State Water Heaters, happily services the community with integrity, professionalism, and competitive pricing. We are fully licensed and insured, and have built a reputation for quality work with each satisfied customer. Thank you for the opportunity to introduce you to our company.

"Came over right away to view the project, accepted his quote, and installed the next day."

Lawrence B on July 2025


Avatar for ProsWay Plumbing & HVAC

ProsWay Plumbing & HVAC

140 Littleton Rd Unit 310 C
5.00(
27
)
Approved Pro

ProsWay Plumbing & HVAC

140 Littleton Rd Unit 310 C
5.00(
27
)
Approved Pro
Customers say: Quick response
29 local quotes requested
1 years of experience

At ProsWay, we deliver premium plumbing services throughout Morris County, New Jersey, and surrounding areas. As a trusted plumbing company, we specialize in a full range of services, including emergency plumbing, water heater repair and installation, drain cleaning, leak detection, pipe repair, sewer line services, and more.

"Very glad we got the drain pipe fixed! Mohamad did a very expert job in replacing the drain pipe and ensuring that it's sturdy and leak free. I can see the drain pipe with the camera and it looks like he built a highway with pipes! I can see the supports for the pipe, and they are very solid and strong. I am glad this is a permanent solution that I know will pretty much last forever. "

Aaron L on May 2025

At ProsWay, we deliver premium plumbing services throughout Morris County, New Jersey, and surrounding areas. As a trusted plumbing company, we specialize in a full range of services, including emergency plumbing, water heater repair and installation, drain cleaning, leak detection, pipe repair, sewer line services, and more.

"Very glad we got the drain pipe fixed! Mohamad did a very expert job in replacing the drain pipe and ensuring that it's sturdy and leak free. I can see the drain pipe with the camera and it looks like he built a highway with pipes! I can see the supports for the pipe, and they are very solid and strong. I am glad this is a permanent solution that I know will pretty much last forever. "

Aaron L on May 2025


Avatar for Clear Flow LLC

Clear Flow LLC

PO Box 3251
4.69(
563
)
Approved Pro

Clear Flow LLC

PO Box 3251
4.69(
563
)
Approved Pro
Customers say: Quick response
36 years of experience
Free onsite estimate

Clear Flow, LLC, is a premier plumbing company. We specialize in a wide range of services for both big and small jobs. We are able to provide all our customers with great service.

"This company was very quick to respond to our emergency & they were here the next day to install a new water heater & they did all, brought the water heater, took the old one out, cleaned up; simply amazing. Dez was an amazing plumber/worker who did a fabulous job & was also quick with the work. I recommend this company wholeheartedly!!!!!! Best, Jack Hasselwander"

john h on August 2025

Clear Flow, LLC, is a premier plumbing company. We specialize in a wide range of services for both big and small jobs. We are able to provide all our customers with great service.

"This company was very quick to respond to our emergency & they were here the next day to install a new water heater & they did all, brought the water heater, took the old one out, cleaned up; simply amazing. Dez was an amazing plumber/worker who did a fabulous job & was also quick with the work. I recommend this company wholeheartedly!!!!!! Best, Jack Hasselwander"

john h on August 2025


Avatar for Pipe Works Services, Inc.

Pipe Works Services, Inc.

33 River Road
4.22(
64
)
Approved Pro

Pipe Works Services, Inc.

33 River Road
4.22(
64
)
Approved Pro
Customers say: True professional
35 years of experience
Free onsite estimate

We are the premier plumbing, heating, air conditioning, drain cleaning, electrical and insulation company serving the New Jersey area for the last two decades. We pride ourselves as the number one service company. Call today!

"Timely and well done"

John B on December 2024

We are the premier plumbing, heating, air conditioning, drain cleaning, electrical and insulation company serving the New Jersey area for the last two decades. We pride ourselves as the number one service company. Call today!

"Timely and well done"

John B on December 2024


Avatar for BAS Construction

BAS Construction

350 Route 46, Suite 219
5.00(
41
)
Approved Pro

BAS Construction

350 Route 46, Suite 219
5.00(
41
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1082 local quotes requested

BAS Construction is a Full Service Home Improvement and Remodeling Company. We do it all, Basement Remodeling & Finishing, Kitchen Improvement, Bathroom Improvement, Painting, Siding, Home Improvement, etc. You name it, we do it. Our Company is fully Insured and Certified. We offer only the highest quality services to our customers while keeping the cost affordable to your budget.

"It was a great experience. Sina and his team were professional and took great care to do a great job. They constantly had new ideas to make the process better and worked with me on ideas I had. Best contractors I have ever worked with."

Sameer A on July 2022

BAS Construction is a Full Service Home Improvement and Remodeling Company. We do it all, Basement Remodeling & Finishing, Kitchen Improvement, Bathroom Improvement, Painting, Siding, Home Improvement, etc. You name it, we do it. Our Company is fully Insured and Certified. We offer only the highest quality services to our customers while keeping the cost affordable to your budget.

"It was a great experience. Sina and his team were professional and took great care to do a great job. They constantly had new ideas to make the process better and worked with me on ideas I had. Best contractors I have ever worked with."

Sameer A on July 2022


Avatar for Drain Away Sewer Service Inc

Drain Away Sewer Service Inc

P.O. Box 3065
4.82(
38
)
Approved Pro

Drain Away Sewer Service Inc

P.O. Box 3065
4.82(
38
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
17 local quotes requested

At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.

"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."

Paula A on February 2025

At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.

"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."

Paula A on February 2025


Avatar for AJT Complete Construction LLC

AJT Complete Construction LLC

25 1st St
4.82(
320
)
Approved Pro

AJT Complete Construction LLC

25 1st St
4.82(
320
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
116 local quotes requested

At AJT Complete Construction, we take great pride in our experience, expertise, quality, and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. We offer free estimates and evaluations

"Great services by AJT Complete Construction LLC. They tuned up our AC system."

Pamela Z on August 2025

At AJT Complete Construction, we take great pride in our experience, expertise, quality, and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. We offer free estimates and evaluations

"Great services by AJT Complete Construction LLC. They tuned up our AC system."

Pamela Z on August 2025


Avatar for Gold Medal Service

Gold Medal Service

120 Route 59
4.00(
4
)
Approved Pro

Gold Medal Service

120 Route 59
4.00(
4
)
Approved Pro
Customers say: Quick response
724 local quotes requested
Free onsite estimate

Gold Medal Service is your premier choice for Electrical and Home Systems needs! In the New York City (Tri-State Area). Our team of experts is dedicated to providing top-notch service. With our unmatched expertise and commitment to customer satisfaction. Contact us today for a gold standard service experience.

"I recently replaced the heating/air conditioning unit in my townhome. It was an easy process start to finish. Aiden (sales) answered all my questions and provided options for my needs. Mick the technician was on-time and thorough. These guys represented their company well. Great experience working with Gold Medal Service."

Isa michelle R on January 2025

Gold Medal Service is your premier choice for Electrical and Home Systems needs! In the New York City (Tri-State Area). Our team of experts is dedicated to providing top-notch service. With our unmatched expertise and commitment to customer satisfaction. Contact us today for a gold standard service experience.

"I recently replaced the heating/air conditioning unit in my townhome. It was an easy process start to finish. Aiden (sales) answered all my questions and provided options for my needs. Mick the technician was on-time and thorough. These guys represented their company well. Great experience working with Gold Medal Service."

Isa michelle R on January 2025


Avatar for Monk's Home Improvements

Monk's Home Improvements

1095 Mount Kemble Ave
4.73(
575
)
Approved Pro

Monk's Home Improvements

1095 Mount Kemble Ave
4.73(
575
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
1466 local quotes requested

Along with the Monk's Kitchen & Bath Design Studio, we are a full-service home improvement provider. Monk's will help you plan, design, and purchase everything you need for a remodel. Then our expert craftsmen will install everything and our painters will come and complete the job.

"We chose Monk’s for a complete renovation of our 1200 SF condo. We were nervous undertaking a project like this for the first time, but our experience with Monk’s was fantastic from start to finish and has continued to be great post-construction. We chose Monk’s based on great recommendations from family friends who had used them for large-scale projects in the past. They are able to provide complete service from design, material procurement, and project management in an extremely seamless manner, which was one of the main reasons for our decision. Our experience started with Casey who was our design consultant at the Monk’s showroom. Casey was fantastic, a pleasure to work with, and designed us a beautiful kitchen. Her recommendations for styles and products went a long way. Peter and Robert assisted us with picking out the perfect laminate floor for our redesign. They were extremely knowledgeable about all of the product choices and ultimately helped us get the best price for the floor we wanted. We had a tight timeframe to get our project done in under 4 weeks. Once our materials hit the warehouse the project was completed within 3.5 weeks. Project management couldn’t have been better. Our project manager was Joey and our foreman was David. Both were outstanding and extremely professional. They made themselves available daily to discuss any concerns or questions we had regarding the status of the work. They took care of everything including working with our HOA, neighbors, and township to ensure everything went smoothly. Even during Joey’s vacation time, Monk’s assigned Garrett to step-in as project manager. Garrett was fantastic and the project continued very efficiently during Joey's absence. Their crews and sub-contractors were always on time, professional, and clean. Monk’s uses ARS Electric Design for a lot of their electrical contracting. Alex, the owner, and his team were fantastic. They came out before the project to install an upgraded electrical panel and ran circuits to ensure everything was ready once Monk’s started work. They even worked closely with us post-construction to ensure some small upgrades were made per request of the town inspector. I would use Alex and his team any time. I would recommend Monk’s to anyone for any large or small home project. Their team is extremely experienced and they produce quality work that they stand behind. We will definitely use them and their team for future projects!"

Michael L on February 2023

Along with the Monk's Kitchen & Bath Design Studio, we are a full-service home improvement provider. Monk's will help you plan, design, and purchase everything you need for a remodel. Then our expert craftsmen will install everything and our painters will come and complete the job.

"We chose Monk’s for a complete renovation of our 1200 SF condo. We were nervous undertaking a project like this for the first time, but our experience with Monk’s was fantastic from start to finish and has continued to be great post-construction. We chose Monk’s based on great recommendations from family friends who had used them for large-scale projects in the past. They are able to provide complete service from design, material procurement, and project management in an extremely seamless manner, which was one of the main reasons for our decision. Our experience started with Casey who was our design consultant at the Monk’s showroom. Casey was fantastic, a pleasure to work with, and designed us a beautiful kitchen. Her recommendations for styles and products went a long way. Peter and Robert assisted us with picking out the perfect laminate floor for our redesign. They were extremely knowledgeable about all of the product choices and ultimately helped us get the best price for the floor we wanted. We had a tight timeframe to get our project done in under 4 weeks. Once our materials hit the warehouse the project was completed within 3.5 weeks. Project management couldn’t have been better. Our project manager was Joey and our foreman was David. Both were outstanding and extremely professional. They made themselves available daily to discuss any concerns or questions we had regarding the status of the work. They took care of everything including working with our HOA, neighbors, and township to ensure everything went smoothly. Even during Joey’s vacation time, Monk’s assigned Garrett to step-in as project manager. Garrett was fantastic and the project continued very efficiently during Joey's absence. Their crews and sub-contractors were always on time, professional, and clean. Monk’s uses ARS Electric Design for a lot of their electrical contracting. Alex, the owner, and his team were fantastic. They came out before the project to install an upgraded electrical panel and ran circuits to ensure everything was ready once Monk’s started work. They even worked closely with us post-construction to ensure some small upgrades were made per request of the town inspector. I would use Alex and his team any time. I would recommend Monk’s to anyone for any large or small home project. Their team is extremely experienced and they produce quality work that they stand behind. We will definitely use them and their team for future projects!"

Michael L on February 2023

...
Showing 1-10 of 930
The Caldwell, NJ homeowners’ guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Modern independent tankless water heater in a room
Aug 27, 2025
Aug 27, 2025
Tankless water heater repair costs vary depending on labor rates, the type of repair, your local rates, and other factors.
water falling from modern bathroom faucet
Aug 22, 2025
Aug 22, 2025
Discover what impacts the cost of replacing a home plumbing stack, from materials and labor to DIY vs. professional installation considerations.
A father with his daughter filling tub in bathroom
Apr 16, 2024
Apr 16, 2024
HomeAdvisor’s Bathtub Faucet Repair or Replacement Cost Guide explains how much tub faucets cost. Find out what factors affect the final price.
new toilet installed inside bathroom remodel
Aug 19, 2022
Aug 19, 2022
The average toilet price is $500. Find out how to get the best price on toilets and toilet bowls and compare prices by type and brand.
drain line from home leaking water
Nov 16, 2024
Nov 16, 2024
Discover the cost to replace drain pipes in a house based on common cost factors such as the pipe type, location, labor fees, and additional repairs.
sump pump in basement of house
Dec 10, 2024
Dec 10, 2024
Understand sump pump repair cost factors, such as submersible vs. pedestal pumps, the type of repair or faulty part, and more with our cost guide.