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Tank Or Tankless Water Heaters: Which Should You Choose?



Need a new water heater? Should you go with a tank or tankless water heater?

Did you know that the average family spends $2,200 per year on their energy bills? Considering that approximately 12 percent of this cost is attributed to hot water consumption, it’s no surprise that more homeowners are looking for ways to lower this expense.

Replacing your hot water heater is an investment that will quickly pay for itself, but is it better to get a tank or tankless water heater?

Stick with us while we review the pros and cons of each option. By the time you’re done, you’ll be ready to make your decision.

What Is a Tankless Water Heater?

Let’s start with the basics. If you haven’t started exploring your options in detail yet, you might not even know what a tankless water heater is or how it works.

As the name implies, tankless water heaters don’t hold a supply of water in a tank. Instead, they use high-powered burners to quickly heat water as it passes through on its way to your faucet. These types of heaters, also known as “demand water heaters,” either run on gas or electric power.

Pros of a Tankless Water Heater

Tankless water heaters are far more efficient than the traditional tank version. Depending on how much hot water you use each day and how many on-demand water heaters you install throughout your home, you can expect an 8 to 50 percent increase in efficiency!

Other advantages include:

  • The average life span of 20 to 30 years (nearly double that of a tank heater)
  • Small size (space savings)
  • Delivers 2 to 3 gallons of hot water per minute (never run out)
  • Long-term cost savings (up to 25% reduction in energy costs)

Cons of a Tankless Water Heater

Unfortunately, no product is perfect, and tankless water heaters are no exception. Here are a few of the cons.

  • Higher initial cost (average of $2,000 to $4,500)
  • Difficulty keeping up with multiple outputs (ex. taking two showers at once, or showering while doing laundry)
  • Additional expenses when switching from tank to tankless (due to the need to relocate piping)

If you’re not sure you’re ready to stomach these extra costs, you might want to stick with the traditional tank system.

What Is a Tank Water Heater?

Most homeowners are familiar with tank water systems since these are the most common way to generate hot water. They store and heat water in a reservoir which typically holds 30 to 50 gallons.

Tank Water Heater Pros

  • Low initial cost (average $500 to $800)
  • Simple design (easier maintenance and repair)
  • Lower repair costs

Most families choose to stick with a tank water heater simply because it’s less expensive all the way around.

Tank Water Heater Cons

Although tank water heaters might seem like a no-brainer for cost-conscious homeowners, there are some drawbacks to consider.

  • Large size (needs a designated indoor space)
  • Shorter lifespan (10 to 15 years)
  • Higher utility bills (due to lower efficiency)
  • Cold showers (can only support about 3 showers in a row)

Now that you understand the difference between the two types of water heater, you’ll be able to make the best decision for you and your family.

Tank or Tankless Water Heater? We Can Help with Either!

Whether you choose to go with a tank or tankless water heater, you will want to hire a licensed plumber. There are many reasons not to DIY water heater installation. The pros at Suburban Plumbing can help with your installation, repair, and maintenance needs.

Our plumbers are licensed, bonded, and insured and we offer same-day service. Contact us today to schedule your appointment!

Schedule a Job Quote

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  1. Darrien Hansen

    It’s good to know that using tank water heaters is a popular and inexpensive way to create hot water. My 4 children usually shower every day before school, and I usually don’t have any hot water left for myself when it is time for me to take a shower before work. Maybe we should consider getting a large tank water heater so everyone has enough hot water for their showers.

  2. Jhon Martin

    Nice blog. It will surely help beginners update their knowledge. The efforts you have put in to create the posts are quite interesting. Looking forward to seeing you soon in a new post.

    However, you may feel that they are at a loss when confronted with a wide variety of tankless water Heater available these days. Especially in a home with kids or a large household, an endless supply of hot water is required for bathing to handwashing, dishwashing to laundry, you need hot water almost all the time.

  3. mike

    i have a bosch tankless heater i cant get to light the igniter is working when trying to light after a few minutes i start to smell gas at that point i stop wait a few minutes and try again but still the same happens


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