Can you switch to a tankless water heater from a heater with a tank?

• <div><p>Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.</p></div>

What are the warning signs that a water heater is about to burst or explode?

• <div><p>While a water heater explosion is rare, it is a serious danger. Be aware of these critical warning signs:</p><ul><li><p><b>Sulfur or Rotten Egg Smell:</b> This is a major red flag, especially for gas water heaters. It can indicate a gas leak, which could ignite and cause an explosion.</p></li><li><p><b>Leaking Pressure Valve:</b> 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.</p></li><li><p><b>Shaking or Rumbling:</b> Loud rumbling or shaking from the tank can be a sign of extreme pressure buildup.</p></li><li><p><b>Excessive Heat:</b> If the exterior of the water heater feels unusually hot to the touch, the unit may be overheating dangerously.</p></li><li><p><b>Rust-Colored Water:</b> This can be a symptom of severe internal corrosion that compromises the tank's integrity.</p></li></ul><p>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.</p></div>

Get matched with top water heater pros in Lyons, SD

Q: Are tankless water heaters better than traditional water heaters?

• <div><p>There are <a href="https://www.angi.com/articles/what-are-pros-and-cons-tankless-water-heaters.htm">pros and cons to tankless water heaters</a>. They are more efficient than traditional tank water heaters, and maintenance costs are lower. These units are also much more compact. On the other hand, they cost about twice as much to install as traditional tank water heaters and are more limited in terms of flow rate. </p></div>

Q: How do I know if my water heater needs replacement?

• <div><p>Unusual noises, lack of hot water supply, efficiency loss, and visible leaks are signs of necessary replacement beyond mere repair.</p></div>

Q: Can you ask a pro what’s the best breaker size for your water heater?

• <div><p>If you are having trouble determining the right breaker size for your water heater, it is a great idea to contact an electrician near you to help. They can help you determine the best option for your home and install the circuit breaker for you, ensuring that you have all the proper permits and that your circuit breaker won&rsquo;t overload, which could lead to fire and other damage.</p></div>

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Verified Reviews for Water Heater Service pros in Lyons, SD

*The Angi rating for Water Heater Service companies in Lyons, SD 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 Lyons, SD 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 16, 2026

Reviewed in September 2026
We had an exceptional experience with Xtreme Xteriors. We were able to do window replacement on our 1978 built home. They turned out great. After that project, we had them do a bathroom remodel for us. They replaced our old fiberglass tub with a nice new walk-in shower. They did everything start...
Xtreme Xteriors, LLC
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Reviewed in May 2026
Elmer, the owner was fair in pricing and performance. Completed my garage in just a few hours including removing an old, leaking stove pipe. That required repairing the hole where the stove pipe was removed. Cleaned up completely . Good job .
E&C Roofing & Siding LLC
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Reviewed in June 2024
Hooked up a RO system to the new faucet and fixed some old pipes.
Outlaw Plumbing
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Reviewed in June 2023
Helped our energy bill alot. Been a good experience.
K&J Insulation
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Reviewed in March 2023
Scott was just here to do our yearly checkup and maintenance. We highly recommend! Scott answered so many questions, filled me in on some of the differences of heating & air in FL vs up North (e.g., the humidistat!), etc. Very professional, knowledgeable, & personable. Thank you, Scott!
Budget AC LLLC, SARASOTA
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Reviewed in February 2023
Great job in dealing with uneven floors, crooked walls, rerouting water and sewer lines! As well as building an addition for an entry, roofing our garage, and laying laminate flooring in our log house.
Freedom Plumbing & Remodeling LLC
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Reviewed in February 2023
Great service. Would call them again!
J-Pimentel, LLC
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Reviewed in March 2022
They have always been there when I needed help. I have used them for demolition after water damage and in the rebuilding they have great foresight on any project they have done for me.I have also used them for building my lawn furniture. Great Workmanship!
A&H Construction LLC
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Reviewed in November 2021
The cleaning service was just great and I would recommend these two women to any one that has been disappointed with their current cleaning service or are looking for a new house cleaning service. Both of them are concerned about making sure that the job was done to our satisfaction. My wife and...
BNB Cleaning & Painting Services
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Reviewed in April 2021
Knight Insulation was great to work with, knowledgeable, efficient, great quality, and very competitive pricing. The guys did a phenomenal job, and they had the patience to stick with us when our project kept running into roadblocks. Really cannot recommend them enough.
Knight Insulation
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Find Water heater pros in Lyons

J-Pimentel, LLC

4.3(

)

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

Serving Lyons, SD and surrounding areas

In business since 2022

Free estimates

Credit card accepted

At J-Pimentel, LLC we pride our ourselves in quality, value, and service! We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We look forward to earning your business!

Response time1 day

Recommended by70%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 Lyons, SD and surrounding areas

In business since 1971

Credit card accepted

"We pay yearly but we have this is included with our rental property. They are pretty good on most things. We had a hot water heater replaced and they did an excellent job on that. They are very quick on their response. They dont come out here. It is all done on the internet. I just like the idea that one time service charge is so much better than trying to hiring someone to come in. It is more about convenience. It pays for itself."

Recommended by65%of homeowners

Water Heater - Install or ReplaceWater Heater - Repair or Service

Serving Lyons, SD and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.\n

Response time50 mins

Recommended by88%of homeowners

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605 Plumbing & Heating

New to Angi

Water Heater - Install or Replace

Serving Lyons, SD and surrounding areas

In business since 2016

Free estimates

Credit card accepted

605 Plumbing and Heating, is a locally owned and operated business out of Yankton, SD. We provide our customers with what our 10 years of industry experience has taught us the importance of timeliness, integrity, and quality of work. Give us a call for a free quote!

Response time10 hrs

Response rate100%

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Emerald River Plumbing & Drain

New to Angi

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

Serving Lyons, SD and surrounding areas

In business since 2025

Free estimates

Warranties offered

Residential Plumbing and Service.\nDrain Clearing, water heater install /repair, home repipes, gas lines, leaking toilets and fixtures. 10 Years Experience

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Water Heaters questions, answered by experts

Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.

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.

There are pros and cons to tankless water heaters. They are more efficient than traditional tank water heaters, and maintenance costs are lower. These units are also much more compact. On the other hand, they cost about twice as much to install as traditional tank water heaters and are more limited in terms of flow rate.

Unusual noises, lack of hot water supply, efficiency loss, and visible leaks are signs of necessary replacement beyond mere repair.

If you are having trouble determining the right breaker size for your water heater, it is a great idea to contact an electrician near you to help. They can help you determine the best option for your home and install the circuit breaker for you, ensuring that you have all the proper permits and that your circuit breaker won’t overload, which could lead to fire and other damage.

The Lyons, SD homeowners’ guide to water heater services

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How Long Do Water Heaters Last?
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