How much does water expand in a water heater?

• <div><p>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. </p></div>

Get matched with top water heater pros in Walker, MN

Q: How do you know when your electric hot water heater is going out?

• <div><p>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.</p></div>

Q: What do I need to replace after water damage?

• <div><p>Any item that can hold on to moisture and encourage mold growth should be discarded and replaced following water damage. Upholstered items, such as armchairs and couches, and soft items, such as mattresses, usually must be thrown away once they've taken on a lot of water. Soft furniture is difficult to dry out, creating an inviting environment for mold.</p><p>You may also need to replace hardwood furniture following water damage if you're unable to fully dry it out. If you have appliances and electronics that have been fully submerged in water, particularly sewage, you'll need to replace those, too.</p></div>

Q: Is it better to vent a gas water heater out of the wall or roof?

• <div><p>Venting a gas water heater out of the roof is preferable in most cases. Heated exhaust gases naturally rise, so a vertical vent pipe is efficient. If you&rsquo;re trying to vent through a pipe exiting a wall, the angle of the pipe may be more horizontal than vertical, making the venting system less effective. If you go through a wall, you may need to add a fan to ensure a successful expulsion of the gases outdoors.</p></div>

Q: How often should you replace an anode rod?

• <div><p>Most hot water heater manufacturers recommend replacing the anode rod about once every three to five years. Anode rods sacrifice themselves by collecting iron, limestone, and other minerals that would otherwise corrode your hot water heater tank. This abuse wears them out long before your water heater does. Check the rod when you remove it and replace it if more than 50% of the metal has been consumed. Check the rod more frequently if you have hard water or use a water softener. </p></div>

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Verified Reviews for Water Heater Service pros in Walker, MN

*The Angi rating for Water Heater Service companies in Walker, MN 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 Walker, MN 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 July 11, 2025

Reviewed in July 2025
Steamboat Plumbing's owner Luke Ewert exceeded my expectations! He was incredibly helpful, friendly, and professional, taking extra time to ensure I understood my new water softener's operation, including navigating cycles and settings. He also walked me through shutting down my cabin's...
Steamboat Plumbing
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Reviewed in April 2025
Excellent responsiveness, service and follow up. Phil and Amy are great! Will use for future work.
Lake Shore Heating and Cooling, LLC
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Reviewed in September 2023
I hired Jon for a bathroom remodel. He was over and gave me an estimate very quickly. He also helped me hire a carpenter to lay new flooring throughout the entire home. He did an amazing job and communication was excellent! Everything was done in a timely manner and he accomodated my every...
Lakes Area Water Works
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Reviewed in November 2022
I have had Naylor's do work for me in the past and always thought they were alright but this last experience with them was completely unreal. I got in touch with them on Tuesday to come out due to my furnace not working in my guest house. They said that they would have someone out here before...
NAYLOR HEATING & REFRIGERATION
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Reviewed in June 2022
It was excellent. They were able to schedule the job according to the weather, they came when they were able to because of the weather, and barely took a break. I was amazed that the cleanup was good and only two of them could get the job done.
Briard's Roofing LLC
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Reviewed in March 2022
From the sales rep, Scott, to the scheduler, Angela, and then Onto the brilliant, tenacious Jake, the installerâ ¦.. this has been a very positive experience, Jake worked out the plumbing nightmare in an old house, complicated by remodeling and too many fingers in the pieâ ¦. He was...
Range Water Conditioning
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Reviewed in December 2021
Swenson Electric does great work. The electricians are friendly and knowledgeable. Highly recommended.
Swenson Electric
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Reviewed in May 2021
they are extremely professional and they stay focused on the job. They charged by the hour and the job came in lower than the bid! They climb the trees so you don't need to accommodate a high-lift truck or other destructive machines on your property. They do an excellent job of clean-up and are...
Wenzels Tree Service
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Reviewed in April 2021
Very professional and efficient flooring installation company . Joshua and his crew provided a great service.
JJ&B Construction Company
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Reviewed in September 2018
Entered my request for help. They promptly responded. After I explained my water flow problem he offered a possible way to figure out where my problem is rather than just coming over & charging me a minimum fee. Very helpful! I will call him back if I find his suggestion gives me a better idea...
Ace Kolles Plumbing LLC - Home Facebook
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Find Water heater pros in Walker

Aquarius Home Services

4.6(

260

)

Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Walker, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"Paul did excellent work on replacing our pressure tank. Also, redid plumbing pipes by water heater."

Response time12 hrs

Response rate100%

6 neighbors recently requested a quote

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Rasmussen Plumbing, Inc.

5.0(

)

Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Walker, MN and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: Quick response

"Very orientated to detail, knowledgeable and prompt in service. Installed water heater, replaced shower, sink and toilet. Did a great job."

Response time1 day

Recommended by100%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Walker, MN and surrounding areas

In business since 1971

Credit card accepted

"He was very nice to talk with and repaired our washing machine. He even helped sweep the water out."

Recommended by65%of homeowners

Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+3 more

Serving Walker, MN and surrounding areas

In business since 2024

Free estimates

Credit card accepted

"Steamboat Plumbing's owner Luke Ewert exceeded my expectations! He was incredibly helpful, friendly, and professional, taking extra time to ensure I understood my new water softener's operation, including navigating cycles and settings. He also walked me through shutting down my cabin's plumbing system for the fall, allowing me to video record the process. Luke's clear explanations, patience, and personal touch made the experience seamless. His dedication to customers is impressive. I appreciated the opportunity to chat with him about his background and family, which added a nice touch to the service. I highly recommend Steamboat Plumbing and Luke Ewert for exceptional service, expertise, and customer care. I will definitely use Steamboat Plumbing again in the future!"

Response time1 day

Recommended by75%of homeowners

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Lakes Area Water Works

4.8(

)

Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Walker, MN and surrounding areas

In business since 2020

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day

Recommended by100%of homeowners

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All Round Plumbing HVAC and General Home Repair

5.0(

)

Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Walker, MN and surrounding areas

In business since 2007

Free estimates

Credit card accepted

With over a decade of experience servicing Minnesota residents, we're you're number one stop for all your home needs. Our professionalism, integrity and professionalism has set us apart from the rest. Give us a call today!

Recommended by100%of homeowners

Request Quote

Water Heaters questions, answered by experts

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.

Any item that can hold on to moisture and encourage mold growth should be discarded and replaced following water damage. Upholstered items, such as armchairs and couches, and soft items, such as mattresses, usually must be thrown away once they've taken on a lot of water. Soft furniture is difficult to dry out, creating an inviting environment for mold.

You may also need to replace hardwood furniture following water damage if you're unable to fully dry it out. If you have appliances and electronics that have been fully submerged in water, particularly sewage, you'll need to replace those, too.

Venting a gas water heater out of the roof is preferable in most cases. Heated exhaust gases naturally rise, so a vertical vent pipe is efficient. If you’re trying to vent through a pipe exiting a wall, the angle of the pipe may be more horizontal than vertical, making the venting system less effective. If you go through a wall, you may need to add a fan to ensure a successful expulsion of the gases outdoors.

Most hot water heater manufacturers recommend replacing the anode rod about once every three to five years. Anode rods sacrifice themselves by collecting iron, limestone, and other minerals that would otherwise corrode your hot water heater tank. This abuse wears them out long before your water heater does. Check the rod when you remove it and replace it if more than 50% of the metal has been consumed. Check the rod more frequently if you have hard water or use a water softener.

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.

The Walker, MN homeowners’ guide to water heater services

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

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