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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

97 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
37 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

"These guys were awesome! They were fast and reasonably priced. The only reason I didn't give five stars is that they placed the water softener tank in front of my heater, and we can't get our filters in and out. That being said, my husband never told me where it needed to be, and I don't know what I don't know. Thanks for the hot water!!"
Response time1 day
Recommended by97%of homeowners
Showing 1-10 of 28
Water Heaters FAQs, answered by experts

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.

Every type of water heater has its advantages and disadvantages. Understanding those can help you decide the best type for your situation and budget. 

Pros

  • Safer than gas or propane

  • Doesn’t require extensive venting systems

  • Lower upfront costs

  • Simpler to operate

  • No pilot light

  • Easier installation

  • More efficient heating than gas models

  • Available as point-of-use (POU) and whole-house units

Cons

  • Slower to heat water

  • Longer recovery time

  • Possibly higher operating costs

  • Doesn’t work during a power outage

  • Costs can increase without a 240-volt connection

Going from a tank to a tankless water heater is one of the most effective ways to lower your utility bills. The switch also frees up more space and ensures a consistent hot water supply, as the water is heated on an as-needed basis. It costs between $5,400 and $7,400 to install a new tankless water heater. Most installation companies will also help dispose of your old water tank.

The average cost to install a new water heater is approximately $1,300, with a typical price range between $880 and $1,800. The final cost depends on several factors, including the type and size of the unit, its location and accessibility, and the amount of labor required. For example, installing a unit in a tight space like a crawl space can increase labor costs. The type of water heater significantly impacts the price: while a conventional gas heater might cost less than $1,000, tankless models can cost around $2,600 to install (and up to $3,500), and solar heaters can cost upwards of $3,700. Other factors that can affect the total price include the fuel type, vent system requirements, permits, and whether any additional plumbing work or repairs from previous water heater damage are needed.

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. 

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.