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How Tank and Tankless Water Heaters Differ

By Cregger Plumbing, Heating, Cooling & Electrical

May 17, 2023

When it comes to choosing a water heater for your home, you may be torn between the two most popular options: tank and tankless water heaters. Both types have their pros and cons, and understanding the key differences between them can help you make an informed decision.

In this blog post, we will discuss the main differences between tank and tankless water heaters, as well as some common issues that customers may face. By the end, you should have a better idea of which option is best for your needs and your home.

1. How They Work

Tank water heaters store and heat a large amount of water in a tank, typically ranging from 30 to 80 gallons. When you turn on your hot water tap, the hot water stored in the tank is released, and cold water enters the tank to be heated.

Tankless water heaters, on the other hand, heat water on-demand as it flows through the unit. When you turn on your hot water tap, cold water travels through a pipe and into the tankless unit, where it is heated by a gas burner or electric element.

2. Energy Efficiency

One of the main differences between tank and tankless water heaters is their energy efficiency. Tankless water heaters can be significantly more energy-efficient than conventional tank water heaters.

This is because tankless water heaters only heat the water when it is needed, eliminating the standby energy losses associated with tank water heaters. However, it’s important to note that the actual energy savings will depend on factors such as your water usage habits and the efficiency of the specific model you choose.

3. Lifespan & Maintenance

Another key difference between tank and tankless water heaters is their lifespan and maintenance requirements. Tank water heaters typically last 10 to 15 years, while tankless water heaters can last up to 20 years or more with proper maintenance.

Tankless water heaters also tend to have fewer issues with sediment buildup and corrosion, which can lead to leaks and other problems in tank water heaters. However, tankless water heaters may require more frequent maintenance, such as annual flushing to remove mineral deposits and maintain efficiency.

4. Installation & Cost

The installation process and cost for tank and tankless water heaters also differ. Tankless water heaters are generally more expensive upfront, but they can save you money in the long run due to their energy efficiency and longer lifespan.

They also require less space and can be mounted on a wall, making them a good option for homes with limited space. Tank water heaters, on the other hand, are more affordable upfront but may cost more in energy bills over time. They also require a larger space for installation.

5. Hot Water Supply

Finally, the hot water supply of tank and tankless water heaters differs. With a tank water heater, you have a limited amount of hot water available at any given time, depending on the size of the tank.

Once the hot water in the tank is used up, you will have to wait for the tank to refill and reheat before you have hot water again. Tankless water heaters, on the other hand, provide a continuous supply of hot water as long as the unit is operating within its capacity.

However, tankless water heaters may struggle to keep up with high hot water demands, such as multiple showers running simultaneously.

Our Professionals Are Here to Help

At Cregger Plumbing, Heating, Cooling & Electrical, we understand that choosing the right water heater for your home can be a challenging decision. Our expert team is here to help you determine whether a tank or tankless water heater is the best fit for your needs and provide professional installation and maintenance services.

Contact us today to learn more about our water heater services and schedule a consultation!

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What Our Customers Say

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kevin kosanovich

14 days ago

Great work! Cregger is a great company to use, and Josh is an excellent technician. Recommend them both!

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Michael Hesano

14 days ago

David was a pleasure to work with. He’s was professional, knowledgeable, and polite. He went out of his way to help me figure out a few items that didn’t relate to the matter he met me on site for. Definitely recommend.

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Heather Carmona

19 days ago

Patrick was very efficient and communicated well regarding status of our boiler

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Alex Baylerian

21 days ago

Desmon is awesome! Very knowable, friendly, and helpful

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Angela Nichols

27 days ago

Timely, informative and customer-focused.

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Bridget O'Brien

1 month ago

Brian was excellent. Timely, courteous , knowledgeable and efficient. He explained the situation and his Plan. Was able to fix My plumbing problem quickly. Highly recommend

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Brenda Gayle

1 month ago

Nico, Peyton and Mike came out and did an amazing job with my install. They were right on time and three worked together seamlessly. I never saw them standing around. They were very courteous and definitely knew their job. They explained things in a way that was easy to understand and asked many times if I had any questions. Both the air unit and furnace look great. They cleaned up after themselves and left nothing behind. Kudos to those three on the amazing job they did. Would definitely recommend them!!

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Cristobal Varas

1 month ago

Josh, from Cregger, came to inspect my water heater. He was very professional, gave me different options and gave me an estimate for me to decide what to do next. No pressure and very much confirmed what I was thinking. With my annual service program, there was no charge for the visit

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kevin Bentley

1 month ago

Great work! Also very timely in coordinating with the city for water shut off and then back on. Thank you!!

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Faith Frederick

1 month ago

Tim was courteous, friendly and very informative. He knows his profession.

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Szymon S.

1 month ago

David did exceptional work cleaning out the sewer pipes. He made multiple passes to ensure all roots were completely removed, and thoroughly checked his work before finishing. Would highly recommend David for any plumbing work! My condolences to him for enduring my father-in-law as a captive audience.

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Matthew Dewan

1 month ago

Chris Goode did an amazing job. He was punctual, worked hard, and was a total pro. I have used Cregger many times for my boiler maintenance, and will continue to do so. Thanks.

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Tom Dolnicek

1 month ago

Tim was nice to work with, friendly and congenial. He explained the problem, identified the solution, and walked through all the steps along the way. He provided good recommendations for follow on cleanup and prevention. I’m very pleased.

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James

1 month ago

Great, professional and knowledgeable took the time out to explain to me. The codes are not codes in the efficiency value that it will bring my home.

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Arvee

1 month ago

Received a very detailed and comprehensive cost estimate for some work that I am considering.

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Randy Carroll

1 month ago

Josh was super friendly and very professional. Hurt the pocketbook but good service is worth. 100% recommend.

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marlene zieah

1 month ago

Joe did an amazing job helping me identify a clog in my basement shower and fixed all other issues so quickly. Beyond grateful!

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Lesley Fairrow

1 month ago

Very responsive in an emergency. The service was expensive but no more so than other plumbers we contacted. Amon was professional, knowledgeable and efficient.

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John Shuell

1 month ago

Fast and efficient, will be using them more in the future.

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Eric Flowers

1 month ago

Adib was prompt, courteous, and efficient. Great service.

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