Tankless Water Heater Buying Guide Lowes May 2026

Unlike tank models measured in gallons, tankless units are sized by , measured in gallons per minute (GPM). To find your size, add up the GPM of every fixture you plan to use at the same time . Typical Fixture Average Flow Rate (GPM) Kitchen Faucet 1.0 – 2.0 GPM Showerhead 2.0 – 3.0 GPM Dishwasher 1.0 – 2.0 GPM Washing Machine 1.5 – 2.5 GPM Source: Lowe's Buying Guide 2. Calculate Temperature Rise

Temperature rise is the difference between the incoming groundwater temperature and your desired output (usually 120°F). tankless water heater buying guide lowes

Incoming water can be as low as 37°F, requiring a high temperature rise (approx. 83°F). Unlike tank models measured in gallons, tankless units

Incoming water may be 70°F+, meaning the unit works less to reach 120°F. Incoming water may be 70°F+, meaning the unit

A tankless water heater is a space-saving, energy-efficient upgrade that provides hot water on demand rather than storing it in a tank. When shopping at Lowe's, selecting the right unit depends on matching its capacity to your household's peak water usage and local climate.

Lowe's offers three primary power options, which you can browse on the Lowe's Tankless Water Heaters page . How to Choose a Tankless Water Heater | Lowe's

Unlike tank models measured in gallons, tankless units are sized by , measured in gallons per minute (GPM). To find your size, add up the GPM of every fixture you plan to use at the same time . Typical Fixture Average Flow Rate (GPM) Kitchen Faucet 1.0 – 2.0 GPM Showerhead 2.0 – 3.0 GPM Dishwasher 1.0 – 2.0 GPM Washing Machine 1.5 – 2.5 GPM Source: Lowe's Buying Guide 2. Calculate Temperature Rise

Temperature rise is the difference between the incoming groundwater temperature and your desired output (usually 120°F).

Incoming water can be as low as 37°F, requiring a high temperature rise (approx. 83°F).

Incoming water may be 70°F+, meaning the unit works less to reach 120°F.

A tankless water heater is a space-saving, energy-efficient upgrade that provides hot water on demand rather than storing it in a tank. When shopping at Lowe's, selecting the right unit depends on matching its capacity to your household's peak water usage and local climate.

Lowe's offers three primary power options, which you can browse on the Lowe's Tankless Water Heaters page . How to Choose a Tankless Water Heater | Lowe's