Do both my boiler and water heater need their own expansion tank?

• <div><p>Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater. </p></div>

Get matched with top water heater pros in Harmony, MN

Q: Does homeowners insurance cover water heater repair or replacement?

• <div><p>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.</p></div>

Q: Are new water heaters better than old ones?

• <div><p>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. </p><p>If you&rsquo;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.</p></div>

Q: Are hot water heater expansion tanks necessary or required by code?

• <div><p>While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.</p></div>

Q: How do hot water heater expansion tanks work?

• <div><p>When the water expands in a hot water heater, it puts pressure on your hot water pipes and can cause leaks or a rupture in the hot water tank under certain conditions. Pipes or water heaters may split due to the pressure where there is a backflow preventer that prevents the hot water heater from diffusing pressure by releasing water back to the public water line.</p><p>In these scenarios, a hot water heater expansion tank provides a place for the hot water heater to relieve pressure and prevent bursts and leaks.</p></div>

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Verified Reviews for Water Heater Service pros in Harmony, MN

*The Angi rating for Water Heater Service companies in Harmony, 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 Harmony, 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 September 07, 2026

Reviewed in September 2026
Very efficient, had attention to details, went the extra mile to help me be more organized, was everything I wanted. Was wonderful!
Jenna's on Gold LLC
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Reviewed in April 2025
Same day service. Repair completed, kept informed of every step of the repair
Air Clinic Air Conditioning & Heating
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Reviewed in June 2024
Quality workmanship at a competitive price.
Stateline Seamless Gutters
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Reviewed in June 2024
Very considerate & careful when power washing around flowers & lawn ornaments. I have had many compliments on how sparkling clean my house looks now after the power washing!
Dry Creek Soft and Power washing LLC
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Reviewed in September 2023
The crew we had working on our house was amazing!! We didn’t know what we would uncover when we decided to replace our siding, soffit and gutters. This team took care of all of it and left us knowing that everything was done correctly. We would highly recommend All Craft for any of your home...
All Craft Exteriors
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Reviewed in March 2023
Goldsmithâ s work on our bathroom project exceeded our expectations! He was professional and friendly. He helped us pick out the best materials and completed the work in just two days! He left our house clean and was respectful of our family as we were at home while he worked. We couldnâ t...
Goldsmith Remodel And Design LLC
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Reviewed in March 2023
John responded quickly, and worked hard to give me a great value for my dollar.
JMAX Specialty Contracting, Inc.
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Reviewed in October 2022
Schmidt Roofing responded quickly after the insurance adjustor had assessed the damage. They worked well with our insurance provider to get us the best benefit. They provided us options of which shingles were available. The crew did an amazing job. The job was challenging because of the height...
Schmidt Roofing
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Reviewed in July 2022
He did a great job and ended up uncovering needed repairs on a visit for an estimate. He was able to trouble shoot all issues with my irrigation system and took the time to correct deficiencies in my system and also quoted me a more efficient system for my watering needs. Will be using him in...
Aries irrigation specialist
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Reviewed in February 2022
As a member of the Smart Club, I appreciate the regular furnace/air conditioning check up. Chee did it this time. I often watch what home repair technicians do during their procedures because I receive a review or learn something new each time. He explained the status of the "health"...
Standard Heating & Air Conditioning, Inc.
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Find Water heater pros in Harmony

K&A Plumbing, LLC

4.8(

)

Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Harmony, MN and surrounding areas

Approved

In business since 2018

Free estimates

Offers commercial services

"Derrick and Eric, did a terrific job, they replaced our water heater the same day that I Called. Derrick even replace a water shut off control that had been bothering us They are a couple of guys that really do a great job for their customers. They are really service oriented. They are my first and only call for my plumbing needs. A +++"

20 neighbors recently requested a quote

Recommended by38%of homeowners

Water Heater - Install or ReplaceWater Heater - Install or Replace - For Business

Serving Harmony, MN and surrounding areas

In business since 2018

Free estimates

Offers commercial services

"They responded right away, and we were able to get the installation of the water softener done in a very reasonable amount of time. Would highly recommend this company."

Response time3 hrs

Recommended by100%of homeowners

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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 Harmony, 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

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Newgaard Plumbing & Heating

5.0(

)

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

Serving Harmony, MN and surrounding areas

In business since 1998

Free estimates

Credit card accepted

If it involves plumbing and heating, Newgaard Plumbing & Heating will get the job done! Family owned and operated, Newgaard Plumbing & Heating has been helping families in Southern Minnesota, and the surrounding area, stay comfortable and happy. Call the best, not the rest. We offer same day service, so call today and let us know how we can make you smile!

Response time50 mins

Recommended by100%of homeowners

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Petteys Plumbing LLC

New to Angi

Tankless Water Heater - InstallWater Heater - Install or ReplaceWater Heater - Repair or Service

Serving Harmony, MN and surrounding areas

In business since 2024

Free estimates

Offers commercial services

We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. \nBeing a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started! \n

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Household Water Softening

New to Angi

Water Heater - Install or Replace

Serving Harmony, MN and surrounding areas

In business since 1994

Free estimates

Credit card accepted

20 years of experience.

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QualityFast

New to Angi

Water Heater - Install or ReplaceWater Heater - Repair or ServiceWater Heater - Repair or Service - For Business

Serving Harmony, MN and surrounding areas

In business since 2022

Free estimates

Emergency services offered

QualityFast is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 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.

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Water Heaters questions, answered by experts

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.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

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.

While not all homes require a hot water heater expansion tank, they are necessary in most newer homes and are often mandated by local building codes. Codes typically require an expansion tank if your plumbing system is a 'closed-loop' system, which often includes a backflow preventer or pressure regulator on the main water line. Some municipalities have specific requirements. Installing an expansion tank on a closed system is crucial, as it prevents excess pressure that can damage your water heater and other appliances, potentially shortening their lifespan. However, tankless water heaters do not require an expansion tank.

When the water expands in a hot water heater, it puts pressure on your hot water pipes and can cause leaks or a rupture in the hot water tank under certain conditions. Pipes or water heaters may split due to the pressure where there is a backflow preventer that prevents the hot water heater from diffusing pressure by releasing water back to the public water line.

In these scenarios, a hot water heater expansion tank provides a place for the hot water heater to relieve pressure and prevent bursts and leaks.

The Harmony, MN homeowners’ guide to water heater services

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