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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

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

Avatar for K&A Plumbing, LLC
K&A Plumbing, LLC
4.8(
13
)
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 +++"
Project Photos
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21 neighbors recently requested a quote
Recommended by38%of homeowners
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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 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."
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+2

Recommended by65%of homeowners
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Avatar for Newgaard Plumbing & Heating
Newgaard Plumbing & Heating
5.0(
1
)
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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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

While a water heater explosion is rare, it is a serious danger. Be aware of these critical warning signs:

  • Sulfur or Rotten Egg Smell: This is a major red flag, especially for gas water heaters. It can indicate a gas leak, which could ignite and cause an explosion.

  • Leaking Pressure Valve: If the temperature and pressure (T&P) relief valve is leaking, it may not be able to properly regulate internal pressure, creating a risk of bursting.

  • Shaking or Rumbling: Loud rumbling or shaking from the tank can be a sign of extreme pressure buildup.

  • Excessive Heat: If the exterior of the water heater feels unusually hot to the touch, the unit may be overheating dangerously.

  • Rust-Colored Water: This can be a symptom of severe internal corrosion that compromises the tank's integrity.

If you notice any of these signs, especially a gas smell, you must act immediately. Shut off the gas supply to the water heater and call a professional plumber right away to prevent a potential disaster.

If your gas water heater is over 20 years old, it should be replaced. Gas water heaters can last up to 12 years and while they can exceed this expectancy if well-maintained, a heater that's 20 years old would require replacement. The heater is unlikely to run as efficiently as a new model and could be more expensive to do so.

Electric water heaters do not need an attached vent, but the location of the water heater should allow for roughly 12 inches of clearance around it. This allows cool air to flow around the appliance and allows repair technicians to work on its components safely. The exact amount of clearance space required depends on your local building codes.

Most standard residential water heaters, which are typically around 40 gallons and use 240 volts and between 3,500 and 5,500 watts, require a 30-amp, two-pole circuit breaker. For smaller, point-of-use water heaters using 120 volts and between 1,500 and 3,000 watts, a 30-amp breaker is also often adequate. However, some models may have different needs; units that use more watts than average may require a 40-amp breaker, while smaller units might only need a 20-amp breaker. Newer, tankless, or more energy-efficient models can also require a higher amperage. Having the correct breaker size is crucial for safe and efficient operation, so it's best to consult a licensed electrician to determine the specific needs of your water heater.

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.

The Harmony, 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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