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How Tank and Tankless Water Heaters Differ | Cregger Plumbing, Heating & Cooling

By Cregger Plumbing, Heating, and Cooling

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, 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!

What Our Customers Say

Nick was great! He was on time, polite and made sure I was aware of the whole process. I highly recommend Cregger! 10/10

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Bryan Lefever

Bryan Lefever

September 2, 2025

Josh did a great job- it was a tough job but he was relentless and diligent. Good work ethic would highly recommend

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Megan Venable

Megan Venable

August 30, 2025

Jayden was great. Quick, knowledgeable and professional. In and out in 2-3 hours. I knew I needed a new water heater for a while and was considering replacing it myself. I am glad I didn’t try to do this. I would have made a horrible mess. He replaced another old valance that was leaking as well.

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Everette Rinehart

Everette Rinehart

August 30, 2025

Paul is fantastic

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Nate DeWitt

Nate DeWitt

August 29, 2025

Ethan was very friendly and quickly fixed our issue

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Mitch Kaufman

Mitch Kaufman

August 29, 2025

Jayden was very knowledge and able to diagnose the problem quickly

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Larry Massey

Larry Massey

August 29, 2025

Jayden was very efficient in his work and was very friendly. I would definitely recommend this company to others!

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jake cuffaro

jake cuffaro

August 29, 2025

Cregger delivered well with quality work and customer service. After a communication error was resolved we are happy with our brand new rebuilt shower. Ethan, the technician, was very professional and did a great job with the repair. They even gave us a discount for the miscommunication and wait. That says a lot about their company and how they value their customers and service.

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G-Fitt Training

G-Fitt Training

August 28, 2025

Jayden was very kind, knowledgeable and took my concerns into consideration. A little overpriced but they were able to come out within a few hours and did the repair fast.

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Myla Frank

Myla Frank

August 28, 2025

Definitely recommend this company – fast response, reasonable pricing and friendly technicians.

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Nicole Sands

Nicole Sands

August 28, 2025

The gentleman that came to our house named Brian was amazing and super helpful!

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Olive Pool

Olive Pool

August 26, 2025

Very nice & professional, reasonable prices, and they have my high recommended. Thank you.

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Leonard Pace

Leonard Pace

August 26, 2025

We called Cregger this morning and they were able to come out within just a few hours. We had an issue with both our sink and shower not draining correctly, and Brian was the technician who helped us. He was polite, professional, and very informative… He took the time to go over our options and explain everything clearly. The service was quick and efficient. Very happy with the results! Would definitely recommend them to anyone in the area!

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Ali Gough

Ali Gough

August 25, 2025

Brian and Kyle came out and fixed my clogged sink. I was impressed with how accurate Brian’s diagnostic skills were. He heard the bathroom toilet flush and said that sounds like a clogged roof vent. After nothing was in the pipes of my sink, they ended up snaking the roof vent. That solved the problem and my sink is now draining properly!

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Anthony Bellomo

Anthony Bellomo

August 25, 2025

Jayden was friendly and fast, would recommend him and the company to anyone!! Thank you!

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David Zalewski

David Zalewski

August 25, 2025
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