Are tankless water heaters worth it 2021? (2023)

Energy Efficient

The U.S. Department of Energy reports a tankless water heater is 24% to 34% more energy-efficient than storage tank water heaters—as long as you use around 41 gallons per day. However, even if you double that amount, they are still 8% to 14% more efficient.

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What is the downside of a tankless water heater?

The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters. Including installation, tankless water heaters cost 3 times more than tank-style water heaters on average.

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Is a tankless water heater worth the extra money?

According to the U.S. Dept. of Energy, a tankless water heater is more efficient and uses less energy than a conventional water heater, providing a $25 to $107 in annual savings. If your hot water use is low (less than 41 gallons per day), a tankless water heater will be 24% to 34% more efficient.

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Is switching to a tankless water heater worth it?

While these systems are more expensive, they are also more efficient. In fact, Consumer Reports indicates that tankless water heaters are 22% more efficient than standard models. The monthly savings might be nominal, but homeowners can expect to save hundreds of dollars annually.

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(Video) 3 Things They Don’t Tell You About Tankless

Why is tankless water heater installation so expensive?

Tankless water heaters have a higher initial price compared to tank heaters, costing homeowners between $1,200–$3,500. The higher cost is a result of a more labor-intensive set-up, as new gas and water lines are required for installation. For electrical tankless heaters, new electric wiring will need to be installed.

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TANK vs TANKLESS WATER HEATER (Pros and Cons)

How long does it take a tankless water heater to pay for itself?

Tankless water heaters can eventually pay for themselves with energy bill savings, but the payback period may be long: 22-27 years for a gas tankless heater, 12-20 years for an electric. Tankless water heaters tend to last longer than storage heaters: 20 to 25 years in many cases.

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How big of a tankless water heater do I need for a family of 5?

In short, a family of 5 would need a 10 GPM gas tankless heater or 27 kW electric tankless heater if you live in the northern part of the USA, where the input water has a lower temperature. The tankless heater has to work extra hard to bring the water temperature up to 110˚F or 120˚F.

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How much does a tankless water heater increase home value?

If you are looking to increase the value of your home, adding a tankless water heater to your features is a great place to start. According to a study conducted by Zillow, homes with tankless water heaters sold for 4% more than their expected value. On average, these homes also sold 43 days faster than expected.

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What is better hot water tank or tankless?

According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.

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(Video) TANK vs TANKLESS WATER HEATER (Pros and Cons)

Can you run out of hot water with a tankless water heater?

Endless Supply of Hot Water

The tankless water heater is—you guessed it—tankless! Because there's no tank, it doesn't work off of capacity; it works off demand. A tankless water heater heats up water as you need it, and it brings hot water to your appliances quickly—and never runs out.

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Do tankless water heaters freeze up?

While it's hard to imagine, a tankless water heater can freeze even if it's installed inside your home. Here's what you can do to fix the problem. You'll need to repair this situation quickly as freezing can cause damage and affect your running water and drainage.

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How noisy is a tankless water heater?

Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels. A decibel meter can be used to find out how loud your tankless water heater actually is.

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Is a tankless water heater a selling feature?

Frees Up More Real Estate

For buyers who prefer plenty of storage, this extra space is a real selling point. Rather than having a large, obtrusive 40 to 50-gallon tank taking up space in your garage, a tankless water heater is often mounted on the wall.

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(Video) Best Tankless Water Heater 2022 | Top 10 Tankless Water Heaters

How long does it take a tankless water heater to heat up?

Instant Hot Water

Tankless units take about 15 seconds to bring water up to temperature, but you still have to wait for that hot water to arrive at your shower head or faucet, just as you do with a tank-type heater.

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How long can you shower with a 20 gallon water heater?

I generally take a 5-10 minute shower on a 20 gallon HWH which is fine for me. I don't think changing the temperature will make a difference, yes it'll increase temperature for those 30 gallons but after that it'll drop temp until the temp can build up again. The low flow showerhead I think is your best bet.

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How do I choose the right size tankless water heater?

The best sizing factor for a tankless water heater is its flow per minute rate. A 3.2 gpm, tankless heater can heat 3.2 gallons of water per minute, which is roughly enough to provide hot water to a shower and a sink. To find the correct capacity, add up all of the fixtures that you expect to use at the same time.

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How do I know which tankless water heater I need?

How to Select the Right Size Tankless Water Heater

  1. Determine the maximum number of devices you want to run and their total flow rate. Then, add up their flow rates (gallons per minute). ...
  2. Determine required temperature rise. ...
  3. Sizing Example: An average shower will be between 104–106° and uses 2.6 gallons of water.

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(Video) PROS and CONS of Going From a TANK to TANKLESS Water Heater

How much does it cost to switch to tankless water heater?

Gas tankless water heaters cost $700 to $4,600, and electric on-demand water heaters cost $600 to $2,500 with installation. Converting or replacing a tank water heater with a tankless system costs $800 to $3,500 on average. Tankless prices depend on the brand, fuel source, and flow rate.

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Can a homeowner install a tankless water heater?

While it is possible to install your own tankless water heater, it's not a job for inexperienced do-it-yourselfers. There are a number of different sizes and styles of tankless water heaters, including propane, natural gas and electric, along with single-room or whole-house sized models.

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How much propane does a tankless water heater use per month?

Gas cooktop/range – 65,000 BTU/hour or 5 to 10 gallons per month. Tankless water heater – 40,000 BTU/hour or 1.5 gallons per day.

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What is the most efficient water heating system?

Solar Water Heater

Uses renewable energy: Solar water heaters are the most energy-efficient water heater options available today.

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FAQs

Are tankless water heaters worth it 2022? ›

If you're looking for a way to save money long-term, improve your home's energy efficiency and don't mind making an expensive investment upfront, a tankless water heater will meet all your needs and more. It's a great long-term purchase for your home that will leave you wondering why you didn't make the switch earlier.

Are tankless water heaters worth it 2021? ›

Tankless Water Heater Advantages

Tankless water heaters (also called “on demand” units or an instant hot water heater) use 30 to 50 percent less energy than units with tanks, saving a typical family about $100 or more per year, depending on water usage. These units heat water only when you turn on the faucet.

What are two disadvantages of a tankless water heater? ›

Large footprint – If you have space restrictions in your home or basement, you could find it difficult to place a 40- or 50-gallon storage tank. Limited hot water – An average storage tank water heater can only support about three showers in a row.

Is a tankless water heater worth the extra money? ›

According to the U.S. Dept. of Energy, a tankless water heater is more efficient and uses less energy than a conventional water heater, providing a $25 to $107 in annual savings. If your hot water use is low (less than 41 gallons per day), a tankless water heater will be 24% to 34% more efficient.

Should I switch to a tankless water heater? ›

Using a tankless water heater can reduce these costs by up to 50 percent, for an average annual savings of $80. They are durable and less likely to fail, causing potentially catastrophic flooding in your home. Tankless units have an average lifespan about twice that of conventional water heaters — 20 years or more.

Is tankless water heater a selling point of House? ›

In most U.S. markets, sellers can expect to get more money for their home by having a tankless water heater. In fact, according to a study by Zillow, homes with tankless water heaters sold for four percent more than those that didn't have one.

Do tankless water heaters increase electric bill? ›

That said, the Department of Energy estimates that a gas-powered tankless water heater would lower energy costs by around $100 a year, and an electric tankless water heater reduces costs by $44 a year. Overall, tankless heaters are substantially more costly than their tank-based counterparts.

Can you run out of hot water with a tankless water heater? ›

Although a tankless system can't run out of hot water, it can still be overwhelmed with demand. A single tap won't do this: run that single shower all you want, you'll keep getting hot water. (But please don't do this! Save water, save energy!)

Can bacteria grow in tankless water heater? ›

Because there's no tank on electric tankless water heaters, water doesn't have a chance to sit still in your system and collect bacteria or calcify. Water goes directly from your pump, through the system, through the pipes and comes out at your faucet.

What is the average life of a tankless water heater? ›

On average, a tankless water heater can last up to 20 years with proper yearly maintenance. With a copper tankless heat exchanger, your tankless water heater has a warranty of 12-to-15 years.

Is one tankless water heater enough for a house? ›

For larger households that typically use more than 85 gallons per day, two tankless systems, or the largest available model, are likely needed. For smaller households that use under 40 gallons per day, one unit should suffice.

Will I save money with a tankless water heater? ›

Tankless Water Heaters Heat Water More Efficiently

"They can be 8%-14% more energy efficient for homes that use a lot of hot water -- around 86 gallons per day." That greater efficiency can lead to an average of $108 in annual savings for gas-fired water heaters, and $44 in annual savings for electric water heaters.

Why does it cost so much to install a tankless water heater? ›

Tankless water heaters have a higher initial price compared to tank heaters, costing homeowners between $1,200–$3,500. The higher cost is a result of a more labor-intensive set-up, as new gas and water lines are required for installation. For electrical tankless heaters, new electric wiring will need to be installed.

How much water is wasted with a tankless water heater? ›

Pro: Tankless water heaters are smaller

Cabrera says tankless heaters are space-saving and have a “potential leak of 1 gallon as opposed to 40 or 50 gallons.”

Why don't I have hot water with tankless water heater? ›

Either the gas supply is low, or the valves for the gas or water are closed. Both prevent the flame from igniting. If your tankless water heater is not working, check to confirm the ignition pack is functioning and that there is gas in the propane tank.

Why does it take so long to get hot water from my tankless water heater? ›

The length of the delay can be determined by a few factors, including the distance between the water heater and the outlet. In other words, the longer the water has to travel, the more cold water will need to be discharged before the hot water appears.

Can cold weather affect tankless hot water heater? ›

During the cold, frosty winter months, tankless water heaters require a bit of extra care and attention, as this equipment can be prone to complications due to freezing. A heating and air conditioning repair technician explains this matter in detail below.

What are the advantage in disadvantage with tankless water heater? ›

The Disadvantage of Using a Tankless Water Heating System:

Starting up the tap or faucet does not immediately start with heated water running and you need to wait for several seconds to maybe a minute until the desired temperature is met.

What are the pros and cons of a tankless water heater? ›

Pros and cons of on-demand hot water
Pros of tankless water heatersCons of tankless water heaters
High efficiencyLimited flow rate
Long-term savingsHigh upfront cost
Environmentally friendlyCan require prior setup work
Jan 21, 2020

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