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TRUSTED BY ONSET, MA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon20
    Verified water heater services reviews

Top-Rated Water heater pros in Onset - Updated Nov 2026

Avatar for Keith Brothers Plumbing, Inc.
Keith Brothers Plumbing, Inc.
4.5(
122
)
Water Heater - Repair or ServiceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Onset, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"My boiler stopped working and we had no heat or hot water. CMK P&H responded quickly, diagnosed the issue, resolved the issue promptly and charged a fair price. Professional, courteous and friendly. I am glad I found them! Thank you!"
Water Heater Replacement
Ball Valve install on Water Main
Sewer Main
Water Heater Replacement
Before & After - Tub to Shower

+4

Response time1 day
13 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Ken Cyr Plumbing Inc
Ken Cyr Plumbing Inc
4.4(
49
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceWater Heater - Install or Replace - For Business+1 more

Serving Onset, MA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

I am a Master Plumber here on the Sorth Shore, and have 20 years experience in plumbing. I pride myself on the quality of my work, and put great thought and effort into every detail. I am very professional, and offer excellent workmanship at a competitive price. My niche is small service jobs such as water heaters, fixture replacements, and general repairs etc. I am also available to to boiler replacements, and specialize in high efficiency boiler installations. \n

3 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Mr. Rooter Plumbing of Southern Mass
Mr. Rooter Plumbing of Southern Mass
3.6(
726
)
Tankless Water Heater - RepairTankless Water Heater - Repair - For BusinessWater Heater - Install or Replace+3 more

Serving Onset, MA and surrounding areas

Approved

In business since 1990

Emergency services offered

Warranties offered

"They came to my home showed me what needed to be done and they went and got the water heater. When they came back a short time later they had the tank and installed it in an hour with new pipes and a new shout off that I can do."
Laundry Tray Pump
Laundry Tray Pump
Heat Zone Piping
Boiler
Water Heater

+24

Response time1 hour
15 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for R. CLAYTON HOME SERVICES, LLC
R. CLAYTON HOME SERVICES, LLC
5.0(
5
)
Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Onset, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

R. CLAYTON HOME SERVICES, LLC 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.

8 neighbors recently requested a quote
Northern Atlantic Plumbing & Heating
3.5(
3
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service+1 more

Serving Onset, MA and surrounding areas

Approved

In business since 2008

Free estimates

Credit card accepted

". This company has done a plethora of work for myself and my family. He has installed appliances such as dishwashers, washer and dryers, garbage disposals, faucets and sinks, a hot water heater, and a gas boiler. He is very trustworthy and knowledgeable about what he does and stands by his work. If there is an issue, he will get back to you and fix it in a timely manner. His pricing is reasonable and he does excellent work. I would recommend anyone to use him."
5 neighbors recently requested a quote
Recommended by100%of homeowners
Malba, Inc.
4.5(
1
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For Business

Serving Onset, MA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. \n

Response time4 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
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Water Heaters FAQs, answered by experts

Several things can void the warranty for your water heater. Many water heater manufacturers state that installing your own will void the warranty. However, even if you get away with performing the task yourself, incorrect installation, lack of a building permit, and improper repair work, regardless of licensing status, can all render your water heater unprotected by both the manufacturer's warranty and any installation warranties. 

While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.

Yes, you can convert a gas water heater to an electric one, but it is a complex process. You will need to ensure there is adequate power for the new electric unit, as they require more power than gas models. The project also involves safely closing off the gas lines and ventilation, and some cities may require a permit for the conversion. The cost can range from $1,500 to $4,100, depending on the installation scope, plumbing and electrical work, and the water heater model. For an accurate quote, it's best to contact a local professional. Also, be aware that your monthly utility bills may increase after the conversion, as natural gas is typically cheaper than electricity.

While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.

You have more options for water heaters than ever before. The best one for your home depends on your hot water usage and budget. Some of the more common types of water heaters are the conventional gas heater, a heat pump water heater, or a tankless heater for smaller homes or those with less water demands. Some uncommon types are solar and point-of-use systems. Some homes may have a combination of two units, such as a large heat pump heater and a backup point-of-use system.

The Onset, MA homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.