people's choice

The Best Tankless Water Heaters on Amazon, According to Hyperenthusiastic Reviewers

Photo: Courtesy Retailer

Here at the Strategist, we like to think of ourselves as crazy (in the good way) about the stuff we buy, but as much as we’d like to, we can’t try everything. Which is why we have People’s Choice, in which we find the best-reviewed products and single out the most convincing. We’ve written about the best alkaline water machines, dehumidifiers, and even garden hoses, but this time we’re covering the best tankless water heaters, according to reviewers on Amazon. (Note that reviews have been edited for length and clarity.)

Best electric tankless water heater

EcoSmart ECO 11 Electric Tankless Water Heater
$217 at Amazon

“This has been a great buy. Remodeled an investment property that my mother is living in, and the main reason for going with a tankless is for the extreme space-saving compared to the traditional 50-gallon tank … After getting an electrician in to make sure the wiring was proper, I was able to install it myself, and it was a breeze. I can tell you that a two-bedroom condo with two bathrooms, a full-size washer and dryer, and a full-size dishwasher has had no problems meeting the demand for hot water, and the water pressure is actually better now than with the older 50-gallon tank. I’ve experienced the clothes washer, dishwasher, and a shower all being used simultaneous with great pressure, and water as hot as you can stand it! Great price, quick shipping, easy install, and great performance. I’m a very happy customer, and I would definitely recommend this product.”

Best on-demand tankless water heater

Stiebel Eltron 29 Plus Tempra, Tankless Water Heater, White
$799 at Amazon

“I am totally in love with this. A month ago, our water heater broke. With ten people in our house and a baby on the way, we thought we needed a big tank. Then we started looking at these on-demand systems. Wow, we love it! My husband and his handyman friend installed this in one day. If you are not so handy, you would need an electrician, or if your state requires this. (Ours does not.) I love that I can put all of the little kids in a shower one after another, so over one hour of constant hot water. Both my husband and I have taken a shower while the dishwasher is going with no problem. For the price of a new water tank, I would highly recommend this. I know we are saving on our electric, as well … Ever want a long, hot shower after the kids are in bed only to find out someone drained the tank? We no longer have this problem!”

Best instant-hot-water heater

Bosch Tronic 3000 T 4-Gallon Electric Mini-Tank Water Heater
$153 at Amazon

“It’s so nice having instant hot water! This unit is very easy to install with minimal tools and know-how … Takes less than 20 minutes to install once you get the stuff from the hardware store. You will need to have an electrical outlet under the sink, so check that before you buy this unit. I used a little cheap screwdriver, small pliers, and a cheap adjustable end wrench. You can do this! You will love the instant hot water.”

Best tankless gas water heater

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
$546 at Amazon

“Went from a tank water heater to this and I love it. Was hesitant about switching to tankless, but it has been amazing, and our monthly electric was drastically reduced, and the increase in natural gas was minimal. I also love the fact that I can take a really long, hot shower and never worry about running out of hot water. Definitely recommend for anyone.”

Best propane tankless water heater

Eccotemp L10 Portable Outdoor Tankless Water Heater
$182 at Amazon

“A terrific product for any campsite. I got enough hot water on one gas grill tank for 15 long showers for two people at the same time. We also were in 30- and 40-degree weather, so we would let it run for ten minutes or so first to heat the outside shower up. This model will provide plenty of hot water for a entire house on an emergency hookup after a storm or tank heater failure … If you’re looking to heat water for an RV, outdoor showers, or any need for on-demand hot water, this thing performs.”

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The Best Tankless Water Heaters, According to Amazon Reviews