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Top-Rated Water heater installers and replacers in Danbury - Updated Nov 2026

Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
31
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Anji recommended four plumbers. Cassidy was the first to respond on Friday afternoon. One other plumber responded but I could not understand his heavy accent, and he asked me if I wanted him to replace the whole burner assembly. That made no sense to me and I questioned him about it. Suddenly he became "too busy" and hung up the phone. Another plumber didn't respond until Monday morning. Too late. The fourth plumber never responded at all. Cassidy asked if it was an emergency or could wait until Monday. I said Monday. and asked what time? I did not get an answer on Friday. Around 8:30P I called and got an answering service which told me that I wouldn't get a response until Monday because their office closed at 8:00P. I had asked about what time on Monday before 6:00P George arrived Monday morning. He was friendly. He knew what he was doing. He replaced the thermocouple. All work was done neatly and professionally. We have hot water again. I'd use Cassidy again."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Kevin was great! The rest of the company not so much. Kevin diagnosed the problem immediately as the thermostat, had a replacement in the truck, and completed the installation of the new unit quickly. He showed me how to program the updated version, and everything seemed to be fine - until the next morning. Turned out the replacement was defective. When I called, I was told that they might not be able to get back to me that day, but Kevin interrupted his schedule to come back and put in a new (and working) unit at no charge."
Additional Photos
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Additional Photos

+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
EcoFlow, LLC
5.0(
9
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Plumbing professional put in connector for ice maker, and replaced my water heater. He was very prompt, efficient, and knowledgeable. He was able to explain everything as well. Very neat when doing the job, & cleaned when finished. I would highly recommend getting services from this professional."
Response time5 hrs
Response rate89%
4 neighbors recently requested a quote
Avatar for Mr. Rooter of Southern Fairfield  County
Mr. Rooter of Southern Fairfield County
4.2(
210
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"They were readily available for an emergency we had regarding pipes and water leak. Very professional, reassuring and fixed the problem in one day! Would definitely rehire!"
Commercial Case Installation
Back Flow On Irrigation
Back Flow On Irrigation
Repair of Septic Line
Repair of a Septic Line

+2

Response time2 hrs
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Fix It All Home Pros, LLC
Fix It All Home Pros, LLC
5.0(
3
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Fix It All Home Pros is the ultimate solution for all of your home or business repair, improvement, and maintenance needs. We provide a wide range of services for painting, plumbing, electrical, drywall, and general repairs. Our team of experienced professionals is dedicated to providing prompt and reliable services at affordable prices. \n\nWhat sets us apart from other home repair businesses is our unwavering commitment to excellent customer service. At Fix It All Home Pros, customer satisfaction is our top priority. Don't settle for anything less than the best. Contact Fix It All Home Pros for all your home, or business repair needs.

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Farm Boys
farm boys bar b q
farm boys bar b q
farm boys bar b q

+20

Response time1 hour
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Benjamin Franklin Plumbing of Danbury
Benjamin Franklin Plumbing of Danbury
4.4(
7
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

We take pride in serving the vibrant community of Danbury, and we understand the unique plumbing challenges that homeowners in this area may face. Whether it's addressing hard water issues prevalent in the region, performing sewer line inspections to prevent root intrusions, or offering eco-friendly plumbing solutions, our expertise is tailored to the specific needs of Danbury residents.\n\nTrust Benjamin Franklin Plumbing of Danbury to safeguard your pipes and preserve the integrity of your plumbing system. With our unwavering dedication to quality, reliability, and customer satisfaction, you can feel confident that your home is in capable hands.

Gallery
Gallery
45 neighbors recently requested a quote
Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.5(
896
)
Water Heater - Install or Replace

Serving Danbury, CT and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"Talk about Top Quality service! From the professionalism of Daniel, to the great job done by Humberto and Ernest. I couldn't have had a better experience in a bad situation. They replaced our steam boiler, and our water tank and did a wonderful job. We have a warm house again thanks to them! Humberto, Ernest, I take my hat off to you!"
Additional Photos
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Additional Photos
Additional Photos

+20

Response time10 hrs
Response rate100%
3 neighbors recently requested a quote
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