What are the financial benefits of a heat pump water heater?

• <div><p>One of the primary benefits of a heat pump water heater is how cost-effective it is. How much you save will depend on your water usage and electricity costs. That being said, we can ballpark savings for the average home of between <b>$100</b> <b>and</b> <b>$500 per year</b>. You can increase that savings rate by researching and applying available energy incentives available in your area. If you really want to focus on cost, consider a <a href="https://www.angi.com/articles/is-a-tankless-water-heater-worth-it.htm">tankless water heater</a>. </p></div>

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>

Best water heater pros near Harmony, MN

Q: Can you install an expansion tank anywhere?

• <div><p>No. Expansion tanks must be installed on the supply side (where heated water flows out) of the boiler. There&rsquo;s also a list of other requirements for most boilers, including being above the pressure relief valves, being on the inner side of any circulator, and more. Your installation manual should have more information on expansion tank installation requirements and what sort of tank the system is made for. </p></div>

Q: Do you have to replace expansion tanks at the same time as your hot water heater?

• <div><p>You don&rsquo;t have to replace expansion tanks at the same time as your hot water heater. You may be able to go six to 12 years or more before needing to replace your expansion tank. At <b>$150 to $450</b>, hot water heater expansion tanks are usually much more affordable than the <a href="https://www.angi.com/articles/how-much-does-water-heater-installation-cost.htm">cost of hot water tanks</a> themselves, which average about $1,190.</p></div>

Q: Can you vent a water heater outside the house?

• <div><p>Typically, only a high-efficiency water heater with an inducer fan can be vented outside the house. Otherwise, your water heater needs to be installed on the inside and vented through the roof. However, certain areas may allow a standard-efficiency water heater to be vented outside. Check your local building codes to be sure.</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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Top-Rated Water heater pros in Harmony - Updated Nov 2026

K&A Plumbing, LLC

4.9(

)

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 +++"

23 neighbors recently requested a quote

Recommended by35%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 FAQs, answered by experts

No. Expansion tanks must be installed on the supply side (where heated water flows out) of the boiler. There’s also a list of other requirements for most boilers, including being above the pressure relief valves, being on the inner side of any circulator, and more. Your installation manual should have more information on expansion tank installation requirements and what sort of tank the system is made for.

You don’t have to replace expansion tanks at the same time as your hot water heater. You may be able to go six to 12 years or more before needing to replace your expansion tank. At $150 to $450, hot water heater expansion tanks are usually much more affordable than the cost of hot water tanks themselves, which average about $1,190.

One of the primary benefits of a heat pump water heater is how cost-effective it is. How much you save will depend on your water usage and electricity costs. That being said, we can ballpark savings for the average home of between $100 and $500 per year. You can increase that savings rate by researching and applying available energy incentives available in your area. If you really want to focus on cost, consider a tankless water heater.

Typically, only a high-efficiency water heater with an inducer fan can be vented outside the house. Otherwise, your water heater needs to be installed on the inside and vented through the roof. However, certain areas may allow a standard-efficiency water heater to be vented outside. Check your local building codes to be sure.

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.

The Harmony, MN homeowners’ guide to water heater services

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