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TRUSTED BY DEFOREST, WI HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon88
    Verified water heater services reviews

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

Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
165
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair

Serving Deforest, WI and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"We were pleased to work with Greg Mair who came to.our house the night of Jan17, 2024 after our 14 year old furnace died. He reviewed our entire system and made recommendations that fit our needs correctly. He arranged for a new furnace to be installed the next day and provided us with space heaters to be used until the work was completed. We will definitely call on Greg for any future needs."
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

102 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Southport Plumbing, Heating & Cooling
Southport Plumbing, Heating & Cooling
5.0(
17
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+1 more

Serving Deforest, WI and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

At Southport Plumbing, Heating & Cooling we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the #1 medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.

Triple Sump Pump
After
Before
Stack Before
Stack After

+4

22 neighbors recently requested a quote
Avatar for Kegonsa Plumbing
Kegonsa Plumbing
4.9(
14
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Deforest, WI and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Lucas and his apprentice arrived early. We were so happy to see them. They proceeded to shut off the water and got right to the problems. They replaced the the faucet and made sure everything was working and took care of all leaking problems. They finished quickly and made sure everything was clean. We were charged a very reasonable price. They performed exceptional service. I have recommended them to several friends and family members."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Benjamin Franklin Plumbing
Benjamin Franklin Plumbing
5.0(
7
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+2 more

Serving Deforest, WI and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

We take pride in serving the vibrant community of West Madison, 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 West Madison residents.\n\nTrust Benjamin Franklin Plumbing of West Madison 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.\nFully licensed and insured!

Diego
working on sink
with homeowners
39 neighbors recently requested a quote
Adler Plumbing, LLC
New to Angi
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Deforest, WI and surrounding areas

Approved

In business since 2023

Free estimates

Offers commercial services

Welcome to Adler Plumbing, LLC! In business since 2023, we are a full service plumbing company who takes great pride in the quality of our work and guarantees customer satisfaction. We specialize in all service and repair for both residential and commercial properties, and no job is too big or too small. Serving Cross Plains and its surrounding areas, be sure to give us a call today!

Response time3 hrs
14 neighbors recently requested a quote
Avatar for Harker Heating & Cooling
Harker Heating & Cooling
4.6(
213
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Deforest, WI and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"Harker Heating And Cooling is the best HVAC contractor we have ever worked with in 40 years. Their web site proudly says they are an “honest company with Midwestern values.” That is absolutely true. Their representative provided in-depth advice, answered our questions. and returned our messages. Their techs were knowledgeable, professional, careful, and friendly. They were on time, on call, and on budget. The service they provided for us over the years could not be better. So when the time finally came to replace our old furnace and A/C we selected them. Unfortunately, they encountered many unexpected problems installing our new equipment. Many more than they had anticipated for the job. But their representative pledged to address every one of them no matter how hard it was for them or how much of their time it took. And that is exactly what they did. No quibbling and no questions. They got the job done right. If you want an honest family contractor who stands behind what they do, and lives by those Midwestern values, then this is the company to hire. You will be glad you did. Doug and Margie King Mount Horeb, Wisconsin"
87 W. Beltline Hwy
Carrier Distinguished Dealer Logo
Star of Madison Award
Recommended by89%of homeowners
Avatar for Edwardson Plumbing LLC - Home  Facebook
Edwardson Plumbing LLC - Home Facebook
4.5(
46
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service+1 more

Serving Deforest, WI and surrounding areas

In business since 2001

Free estimates

"The 2 person team that came to switch out my water heater and install a new kitchen faucet were very organized, professional and worked in an efficient manner. I was very impressed with their work. Probably the best experience I had ever had hiring a plumbing contractor. I will definitely be calling them first in the future."
Response time1 day
Recommended by97%of homeowners
Showing 1-10 of 28
Water Heaters FAQs, answered by experts

If your gas water heater is over 20 years old, it should be replaced. Gas water heaters can last up to 12 years and while they can exceed this expectancy if well-maintained, a heater that's 20 years old would require replacement. The heater is unlikely to run as efficiently as a new model and could be more expensive to do so.

The right way to vent a gas water heater is to have a pipe directly upward or slopes upward out of the house. Because hot air naturally rises, this type of venting will efficiently ensure that all gas moves out of the house. Your system may rely on fans or blowers as well.

You should replace your gas water heater when it’s reached the end of its lifespan, which is a maximum of 12 years in most cases. If your unit is over a decade old and showing signs of inefficiency, leaks, or frequent malfunctions, it may be time to replace your water heater. Research how to best maintain your gas water heater to help extend its lifespan.

Every city and state will have its own set of installation codes and laws. Some won’t require you to obtain a permit before replacing your water heater, though we recommend you do, regardless of the local codes. On the other hand, some cities and states might require secondary permits for plumbing and electrical work related to the installation. Check with a local water heater installation company and local building codes to confirm which permits are required and what the specific laws are.

Homeowners insurance may cover the repair or replacement of a water heater if it's damaged by a covered peril, such as a fire or a burst pipe. However, policies typically do not cover repairs or replacement needed due to normal wear and tear, old age, or lack of maintenance. For these issues, a home warranty or a manufacturer's warranty may provide coverage. While the policy might not pay to fix or replace the malfunctioning appliance itself, it often covers the cost of water damage restoration caused by the faulty water heater. Always check with your insurance provider to understand the specifics of your policy.

The Deforest, WI homeowners’ guide to water heater services

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