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Find Tankless water heater repair pros in Hollis

Avatar for Robert Johnson Plumbing

Robert Johnson Plumbing

4.97(
295
)
Approved Pro

Robert Johnson Plumbing

4.97(
295
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
17 years of experience

Robert Johnson has a reputation for being one of the most reliable plumbers in the Hillsborough County area. Robert specializes in water heater installations, service calls, boiler installations, and water softener/filtration system installations. Please do not hesitate to reach out and schedule an appointment today.

"The team did an excellent job replacing our water heater. Thank you!"

Guang M on March 2026

Robert Johnson has a reputation for being one of the most reliable plumbers in the Hillsborough County area. Robert specializes in water heater installations, service calls, boiler installations, and water softener/filtration system installations. Please do not hesitate to reach out and schedule an appointment today.

"The team did an excellent job replacing our water heater. Thank you!"

Guang M on March 2026


Avatar for Sila Heating, Cooling, Plumbing and Electrical

Sila Heating, Cooling, Plumbing and Electrical

4.68(
4,795
)
Approved Pro

Sila Heating, Cooling, Plumbing and Electrical

4.68(
4,795
)
Approved Pro
Customers say: Super punctual
37 years of experience
Free onsite estimate

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"No invoice transparency at Sila Heating, Cooling, Plumbing, and Electrical. I had an appointment on February 16, 2026, to troubleshoot a no-heat issue on the second floor of my home. I was told the repair would be $1,500. Although hesitant, I agreed to proceed because I needed heat. The repair was completed, I paid $1,524.90, and the technician left. I later realized I had not been provided with an invoice, so I called the company directly at 781 438 4114. The person who answered the phone emailed me an invoice. The invoice listed an HVAC diagnostic fee of $69.00, followed by ?HYD 170,? with no price or itemized breakdown provided. I understand that professional services and parts can incur significant costs, it is unreasonable that the part alone could account for the entire charge without any supporting documentation. I respectfully requested a detailed breakdown of the invoice through multiple phone calls and emails; however, the responses I received were dismissive and failed "

Diane C on February 2026

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"No invoice transparency at Sila Heating, Cooling, Plumbing, and Electrical. I had an appointment on February 16, 2026, to troubleshoot a no-heat issue on the second floor of my home. I was told the repair would be $1,500. Although hesitant, I agreed to proceed because I needed heat. The repair was completed, I paid $1,524.90, and the technician left. I later realized I had not been provided with an invoice, so I called the company directly at 781 438 4114. The person who answered the phone emailed me an invoice. The invoice listed an HVAC diagnostic fee of $69.00, followed by ?HYD 170,? with no price or itemized breakdown provided. I understand that professional services and parts can incur significant costs, it is unreasonable that the part alone could account for the entire charge without any supporting documentation. I respectfully requested a detailed breakdown of the invoice through multiple phone calls and emails; however, the responses I received were dismissive and failed "

Diane C on February 2026


"Prompt professional courteous. Reasonably priced. Super service. "

Carol S on June 2025

A reliable and trustworthy company providing plumbing and heating services. Fair prices with exceptional service. .

"Prompt professional courteous. Reasonably priced. Super service. "

Carol S on June 2025


Avatar for Heritage Home Service

Heritage Home Service

4.52(
967
)
Approved Pro

Heritage Home Service

4.52(
967
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
38 years of experience

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Southern Maine. Bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service. Our namesake is about honoring those who came before us, and most importantly, it is about leaving a legacy of serving people extraordinarily well. For over 37 years in business, we have helped countless families across our community stay comfortable and healthy in their homes, and today we continue to evolve and find new ways to serve you even better.

"They were A pleasure to work with. "

Maria S on February 2026

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Southern Maine. Bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service. Our namesake is about honoring those who came before us, and most importantly, it is about leaving a legacy of serving people extraordinarily well. For over 37 years in business, we have helped countless families across our community stay comfortable and healthy in their homes, and today we continue to evolve and find new ways to serve you even better.

"They were A pleasure to work with. "

Maria S on February 2026


Avatar for A Really Good Plumber

A Really Good Plumber

4.78(
32
)
Approved Pro

A Really Good Plumber

4.78(
32
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
19 years of experience

At A Really Good Plumber, we pride ourselves on providing our customers with reasonable pricing, quality workmanship, and professional service on every call. When you work with A Really Good Plumber, you know you are getting high quality products and exceptional service facilitated by cutting edge technology. Our certified technicians use this technology in all installations, and to diagnose, and repair existing problems. These services will ultimately benefit the ones you love by keeping you and your family comfortable and safe all year round.

"He did a great job had it done in a few hours "

Rene P on June 2025

At A Really Good Plumber, we pride ourselves on providing our customers with reasonable pricing, quality workmanship, and professional service on every call. When you work with A Really Good Plumber, you know you are getting high quality products and exceptional service facilitated by cutting edge technology. Our certified technicians use this technology in all installations, and to diagnose, and repair existing problems. These services will ultimately benefit the ones you love by keeping you and your family comfortable and safe all year round.

"He did a great job had it done in a few hours "

Rene P on June 2025


Avatar for Skovron Mechanical Services

Skovron Mechanical Services

4.44(
76
)
Approved Pro

Skovron Mechanical Services

4.44(
76
)
Approved Pro
Customers say: Quick response
23 years of experience
Free onsite estimate

Welcome and thank you for your interest in Skovron Mechanical. Highly trained and knowledgeable in the diagnosis, repair, and installation of heating, cooling, and refrigeration equipment. You can be rest assured that you will receive quality products and dependable service whenever you need Skovron Mechanical, from recommending the right system to arranging convenient financing. Honest, Upfront Pricing - You will receive a price before any work is performed to make sure there are no surprises to you. Once you decide to do the work there are no extra charges other than what you approve. This way you know exactly what you are paying for so you don�t have to worry about any �hidden cost�.

"Work was done promptly and the boiler works great! All issues were addressed and fixed in a timely matter. So appreciative that they came out quickly and got things done."

Betty F on September 2025

Welcome and thank you for your interest in Skovron Mechanical. Highly trained and knowledgeable in the diagnosis, repair, and installation of heating, cooling, and refrigeration equipment. You can be rest assured that you will receive quality products and dependable service whenever you need Skovron Mechanical, from recommending the right system to arranging convenient financing. Honest, Upfront Pricing - You will receive a price before any work is performed to make sure there are no surprises to you. Once you decide to do the work there are no extra charges other than what you approve. This way you know exactly what you are paying for so you don�t have to worry about any �hidden cost�.

"Work was done promptly and the boiler works great! All issues were addressed and fixed in a timely matter. So appreciative that they came out quickly and got things done."

Betty F on September 2025


Avatar for Climate Design Systems, LLC

Climate Design Systems, LLC

5.00(
5
)
Approved Pro

Climate Design Systems, LLC

5.00(
5
)
Approved Pro
80 years of experience
Free onsite estimate

Climate Design Systems has been around since 1946! We are an HVAC & Plumbing company that is full licensed to serve Massachusetts, New Hampshire, and southern Maine. We pride ourselves on quality workmanship and outstanding customer service. There is no job too big or too small! We offer Residential & Commercial HVAC services such as; -maintenance -repair -replacement/retrofit -new construction We offer Residential & Commercial Plumbing services such as; -water leak repair -drain repair -fixture replacement -boiler repair & installation -water heater repair & installation -water treatment

Climate Design Systems has been around since 1946! We are an HVAC & Plumbing company that is full licensed to serve Massachusetts, New Hampshire, and southern Maine. We pride ourselves on quality workmanship and outstanding customer service. There is no job too big or too small! We offer Residential & Commercial HVAC services such as; -maintenance -repair -replacement/retrofit -new construction We offer Residential & Commercial Plumbing services such as; -water leak repair -drain repair -fixture replacement -boiler repair & installation -water heater repair & installation -water treatment