A Guide to Tankless Water Heaters

Also called on-demand water heaters, tankless options only heat the water supply when you turn on a faucet or appliance. This differs from traditional models, which heat water constantly and store the supply in a large tank. Typically, tankless models use natural gas, propane, or electricity, and you can install them in a closet or on a wall due to their smaller size. Usually, gas-powered ones offer a higher flow rate, but electric varieties can work well if you have a smaller home or low demand.

Tankless water heaters engage as soon as you start a water-based appliance or turn on a faucet. Burners inside the unit heat the supply flowing inside the pipes to your desired temperature. When you finish using the water, the device stops the heating process.

One of the biggest benefits is your home will have instant hot water and you don't have to wait for the tank to refill after using it. Because they only engage when you need water, these heaters are efficient and do not waste energy heating water constantly. Water also doesn’t sit in a tank where rust and scale can accumulate, which means you have a fresh, clean supply every time.

Without a tank, these models take up less space, making them perfect for smaller homes or apartments. They can free up floor space for other necessities, such as a larger washer and dryer. Also, these devices can last for up to 20 years, as they don't experience as many mechanical issues as traditional models.