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

Avatar for H L Bowman
H L Bowman
4.6(
430
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"They were very fast to respond to my call and were able to send someone within two hours. The replacement of the hot water heater went well. For the water pipes they use copper crimp fittings instead of soldering so it will be interesting to see how that holds up over the years. My only concern is how they ran the gas line. They use Gastite CSST which is fine, but the CSST is run so it goes downward then back up and then downward again before it enters black pipe that has a moisture trap. It seems to me that if there is any moisture it will end up in the CSST instead of the trap. In addition, there is a pretty good bend in the CSST right before it goes into the trap section. Also, Teflon tape was used on the all the joints instead of joint compound. I think I will get someone from a different company to come in and take a look at it."
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+6

466 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Live Your Most Comfortable Life with a Company You Trust. \nWe offer Same Day Service and Next Day Installation! \n \nSila 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. \nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!

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+6

67 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Gentille Plumbing and Heating
Gentille Plumbing and Heating
5.0(
28
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"My grandson flushed his little yellow bus down the toilet Friday afternoon. I called several plumbers in the area. By late Saturday afternoon I had only 1 returned call saying they could come out Monday morning. A friend suggested I call Gentille Plumbing and Heating. I called them and they said they could come early Sunday morning. Ryan arrived promptly as promise and quickly determine how to approach the issue and retrieved the little yellow bus. Cleanup was quick and pricing fair. Ryan was professional , friendly and was on his way within 45 minutes of arrival. Thank You Gentille Plumbing and Heating"
Response time6 hrs
Response rate96%
23 neighbors recently requested a quote
Avatar for Morris Heating & Air Conditioning
Morris Heating & Air Conditioning
4.8(
81
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Justin and Cam, the technicians, did a great job. We have an old farmhouse with a very strange configuration of partial crawlspace and partial full basement, and water was leaking through the fieldstone foundation wall from the crawlspace. They quickly diagnosed that the problem was coming from 1 or 2 zones of the hot water radiator heating system, and they were able to shut off those zones to stop the leak, while allowing the house to still use water for sinks, toilets, and showers. We'll have to do more work later to replace pipes to the radiator but, because they are hard to access, we need to plan ahead for some construction work. I'm fully satisfied that these guys were able to find the problem and give us even a temporary solution that allows us to have our working plumbing again without the basement getting wet. Would definitely work with them again."
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+8

4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for CS PLUMBING & MECHANICAL LLC
CS PLUMBING & MECHANICAL LLC
5.0(
44
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"CS Plumbing and Mechanical did an amazing job installing a new heating system with hot water. They were courteous, clean, efficient and professional. I highly recommend and would definitely hire them again for any plumbing needs."
Water heater placement
Oil fired boiler with tankless hot water
Boiler replacement
Boiler replacement
Boiler replacement

+13

Response time8 hrs
Response rate94%
5 neighbors recently requested a quote
Avatar for GCF Plumbing & Heating
GCF Plumbing & Heating
5.0(
15
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

In business since 2010

Offers commercial services

Customers say: Quick response

We are a locally owned and operated company that values honesty and integrity, and treats your project as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction! \n

Boiler work
Water heater tankless
8 neighbors recently requested a quote
Recommended by6%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,316
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Replacement was urged by technician after routine inspection of heating system. Water heater wasn't part of the service but, tech checked it anyway. Nice enough of him to do that. After showing me his concern (legitimate) I asked for a quote to replace. Outrageously expensive considering cost of materials. Later learned techs are incentivized to sell service and parts. Dropped them as my go to plumbing and heating guys. Water heater still working 3years after urgent replacement was quoted"
Career fair
Team breakfast
Festivals and events
Golf tournament
Heritage Helps initiatives

+27

Recommended by91%of homeowners
Avatar for SP Mechanical Service
SP Mechanical Service
5.0(
2
)
Tankless Water Heater - Install

Serving Nahant, MA and surrounding areas

Approved

In business since 2025

Free estimates

"I don't recommend contractors lightly—someone has to earn my trust first. That's exactly what Smarlyn and the team at HP Mechanical have done. They've completed several plumbing projects for me personally, including work in my own home, as well as plumbing on all of my fix-and-flip properties and many of my real estate clients' homes. Every job has been handled with professionalism, honesty, and exceptional attention to detail. What truly sets Smarlyn apart is that he consistently goes above and beyond. He's reliable, responsive, and takes pride in delivering quality work the right way the first time. As a real estate professional, my reputation depends on the people I refer to my clients. I confidently recommend HP Mechanical because they've earned that trust. If you're looking for a plumber who is knowledgeable, dependable, and genuinely cares about his customers, Smarlyn is the one to call. Highly recommended!"
New Boiler
New Boiler
New Boiler
Response time4 hrs
Response rate100%
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