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TRUSTED BY GLOUCESTER, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon62
    Verified water heater services reviews

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

Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Gloucester, 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!

Additional Photos
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+6

126 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Reservoir Home LLC
Reservoir Home LLC
4.8(
14
)
Water Heater - Install or Replace

Serving Gloucester, MA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Our mission is to make home electrification easy, affordable and awesome. We turn your water heater into a thermal battery. A Reservoir puts a heat pump, an onboard computer and industrial hydronic controls in one unit. It heats and stores water when electricity is cheapest and cleanest and holds it until your house needs it. \n

Reservoir Installs
Reservoir Installs
Reservoir Installs
Reservoir Installs
Reservoir Installs

+5

31 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Morris Heating & Air Conditioning
Morris Heating & Air Conditioning
4.8(
81
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Gloucester, 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."
Additional Photos
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+8

4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Christopher Viscarello Plumbing
Christopher Viscarello Plumbing
4.5(
72
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Gloucester, MA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"This is a great company. I have a 2 family with only 1 water heater, and it needed to be replaced. Chris went over all the options with me and explained everything very well. He helped me figure out the best option for my property with no pressure and no upselling. Matt and his helper were extremely professional and helpful when they installed the new unit. I just can't say enough positive things about them all! When it is so tough to know who is trustworthy enough to hire, it is helpful to know that you can trust Viscarello!!!"
High efficient boiler
High efficient boiler
High efficient boiler
High efficient boiler
High efficient tankless

+21

1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for CS PLUMBING & MECHANICAL LLC
CS PLUMBING & MECHANICAL LLC
5.0(
44
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+2 more

Serving Gloucester, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Cecil is an absolute professional and dedicated this his craft. When a heating system pipe burst in the middle of winter, Cecil was there within the hour to fix it. We have used him several times for repairs and upgrades at our rental units - his work is flawless and his prices are fair."
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 ER Services Plumbing and Heating
ER Services Plumbing and Heating
3.9(
25
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair+5 more

Serving Gloucester, MA and surrounding areas

Approved

In business since 2023

Emergency services offered

Warranties offered

"The young technicians who came to my home to installed the new thermostat and move it to another wall in my home were polite and conducted themselves professionally in my home and cleaned after themselves. I very appreciated Uri suggestion when he recommended to me another alternative at the initial visit and gave me a few quotes to choose from. So I'm very happy with ER service and I would rehired these two individuals back to my home. I will definitely recommend ER to other people in my life."
Gas Lines for Commercial Building
Commercial Kitchen Faucet
Bathroom Finish
Boiler Installation
Shower Stall Finish

+21

Response time6 hrs
346 neighbors recently requested a quote
Recommended by9%of homeowners
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Water Heaters FAQs, answered by experts

Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.

Typically, only a high-efficiency water heater with an inducer fan can be vented outside the house. Otherwise, your water heater needs to be installed on the inside and vented through the roof. However, certain areas may allow a standard-efficiency water heater to be vented outside. Check your local building codes to be sure.

A larger heater requires a larger breaker—unless there’s one already installed. The longer answer to this question is more nuanced. Do you place demands on the heater at the same time as running other heavy-duty appliances like ovens and washing machines? Do you live in an older home that may not have considered the higher electrical demands we have now? Breakers need to be sized at 125% of the load. To find that load, you should call a local electrical pro.

We recommend you turn off the unit, the power, and the water supply as soon as you notice a leak. Your water heater tank should have a dedicated shut-off valve located on the cold inlet pipes. If the valve is broken or inoperable, use the shut-off valve to your home's main water supply to stop the flow to the entire house.

Avoid touching valves or pipes directly without confirming if they are hot. Wear gloves and other safety gear to keep from coming into contact with hot levers or components when turning off your leaking water heater.

If you're replacing a broken water heater, now is a great time to make sure you're selecting a unit that has the right capacity for your household. According to the U.S. Department of Energy, a small 50-gallon to 60-gallon tank is sufficient for households with one to three people. A medium-sized 80-gallon tank is considered ideal for three to four people. A larger tank may be needed if your household has four to six people.

The Gloucester, MA homeowners’ guide to water heater services

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