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

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 Davis, IL 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
Catenzaro & Sons Plumbing
4.3(
59
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Davis, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"When Dave arrived and looked at the faucet and where it was located - he told me that it would be an additional $50 to cut a hole in the drywall which I said ok.  Then he went down to the basement to look for the water connection and he noticed that I had an old disconnected water softener.   He mentioned to me to me that I should have this water softener removed because it should be  because it potentially could cause an explosion.  Then he replaced the faucet and I asked him to give me an estimate on a 50gal new hot water heater and he did, gave me a written estimate and said that they would replace all the connections and hookups and I thought the estimate was totally fare.  Then as he was leaving, he said that he was not going to charge me for the cut into the drywall, and I was most appreciative.   He did a great job and I will definitely have him come back again.
"
Recommended by86%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Davis, IL and surrounding areas

In business since 1971

Credit card accepted

"The yearly service works out to be $50 a month. We've had two water heaters replaced through them because of a fault in them. They're usually very responsive. I like that I can request the service online. The only thing is, I wish that there was a better avenue for emergency services. If something doesn't work right away usually it takes a couple of days to get someone out and sometimes you can't wait two days without water."
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Recommended by65%of homeowners
LH Plumbing, LLC
2.3(
2
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Davis, IL and surrounding areas

In business since 1966

Free estimates

With over 40 years of experience LH Plumbing is a family owned business serving Machesney and surrounding areas since 1966. We work hard to bring each customer the best available service. We look forward to working with you, thank you for your interest

Response time4 days
Recommended by100%of homeowners
Water Heaters FAQs, answered by experts

Water expands when heated and also when freezing. When water is heated, it expands by around 4%. For a full water heater, this is one of the main reasons malfunctions occur—the hot water has nowhere else to go but out. Due to the constant expansion and reduction in volume, it’s recommended (required in most places) that an expansion tank be installed.

An average-sized empty water heater weighs around 150 pounds. Tankless water heaters are much lighter, weighing between 10 and 50 pounds. The smaller size and added convenience come at a price, though—tankless water heaters average about twice the price of their traditional counterparts.

Newer models are packed with newer technologies that decrease energy consumption and increase output, giving you more bang for your buck in more bills than one. 

If you’re trying to decide whether you want to repair or replace your new heater, consider factors like your utility bills, repair costs, and even your carbon footprint to help you decide whether it makes sense to buy a new one instead.

Signs your electric water heater is failing include inconsistent water temperature, reduced hot water supply, longer heating times, or discolored water (rusty or cloudy). Unusual noises like popping or rumbling suggest sediment buildup, while leaks or corrosion around the tank signal structural damage. If your unit is over 10 to 15 years old and experiencing frequent issues, it may be time to replace it.

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.

The Davis, IL homeowners’ guide to water heater services

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