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Q: Are water heater expansion tanks required by code?

• <div><p>Not all homes are required by code to have water heater expansion tanks, though some cities, like Los Angeles, do. Sometimes, municipalities will require a code that asks homeowners to install an expansion tank if their water heater is on a closed system. A closed system setup without an expansion tank can place unnecessary stress on appliances and shorten their lifespan.</p></div>

Q: How much water should come out when draining a water heater?

• <div><p>The average water heater holds between 40 and 60 gallons, but the exact amount of water that comes out during draining will depend on your unit&rsquo;s capacity. The amount of <a href="https://www.angi.com/articles/how-long-drain-water-heater.htm">time it takes to drain a water heater</a> averages from 10 to 30 minutes.</p></div>

Q: What are the different types of water heaters available for installation?

• <div><p>Storage, tankless, heat pumps, and solar water heaters each suit specific space constraints, usage needs, and efficiency preferences.</p></div>

Q: Do electric water heaters waste electricity?

• <div><p>If you have a tank-type electric water heater, it runs regularly to keep the water at the desired temperature. If you live in a home where you don&rsquo;t use much hot water, it could seem wasteful to run power to heat water that you&rsquo;re using infrequently. You could save some power by using a smaller tank, insulating the tank, or <a href="https://www.angi.com/articles/how-to-turn-up-water-heater-temperature.htm">lowering the temperature of the water heater</a>. </p></div>

Q: Can I install a water heater by myself?

• <div><p>While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.</p></div>

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Verified Reviews for Water Heater Service pros in Preston, CT

*The Angi rating for Water Heater Service companies in Preston, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

*The HomeAdvisor rating for Water Heater Service companies in Preston, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

Last update on December 16, 2025

Reviewed in July 2025
Very satisfied with the Beachfront, they carried their water on the truck, and we recommend them to anyone who doesn't want to use their water pump. Removed all green algae and moss, and the house looks clean along with the decks!
Beachfront Softwash
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Reviewed in November 2022
Our experience with the Owens Corning Basement Finishing System was a very positive one. They answered all of our questions during the initial consultation and took time to discuss the process without pressuring us to commit. We were very impressed with the communication to schedule our...
Owens Corning Basement Finishing System
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Reviewed in June 2021
My daughter didn't have any hot water in the home that she purchased. Her only source of hot water was through a coil attached to the boiler. This house is very old and no one had ever thought to change out an obsolete system with a hot water heater. Anyway, the coil wasn't heating the water....
JMB Plumbing, LLC
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Reviewed in June 2019
This was such an outstanding experience. I discovered a slow leak in my old water heater and placed a call to Eric. He responded in less than 24 hrs and was able to replace the water heater the same day. The service was exceptional as was his professionalism and knowledge. His fee was very...
Eric Sabo Plumbing, Heating & Cooling
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Reviewed in January 2019
Typical salesman couldnâ t give me a quote without having myself and wife sit down for hours on and and didnâ t really offer the product that I was interested in
Nescor
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Reviewed in August 2018
Replaced a burned out thermostat in electric water heater
Diamond Plumbing & Heating, LLC
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Reviewed in March 2016
My family and I had recently moved to our new home and did not yet have a company to service our septic system. We were in need of an emergency repair and turned to an internet search to find a company. A.D.B. had great reviews so we gave them a shot and they proved why they had so many great...
A.D.B. Construction & Septic Corp.
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Reviewed in March 2016
Justin is professional and really cares about his work. I'll call him in the future if I need my water softener repaired or maintained, and have no qualms in recommending him to everyone.
Advanced Well and Home Solutions
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Reviewed in December 2013
American Dry Basement (ADB) was contracted to seal our entire dirt cellar with their spray concrete product. Our hopes were that it would reduce the moisture under our house, keep out the winter wind and burrowing rodents, and finally provide us a place we could store seasonal furniture, etc....
American Dry Basement Systems
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Reviewed in July 2012
They do a really really good job. I have several places that have standing water and I have not had any problems since they started spraying. They use stuff that is non-harmful to pets and they always close my gates.
Ivey Exterminating Inc
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