20% of your home’s energy expenditures come from heating hot water. Since a tankless water heater typically saves the household around 40%, this is a HUGE saving.

There are many models. When selecting the perfect tankless water heater, first determine the following:

Determine flow rate: Determine how many faucets and showers you want to run simultaneously. Then add up the flow rate (gallons per minute) of these sources. To do that, you can put buckets or other containers under the faucet or shower. It allows you to measure how much water comes out per minute. Add these amounts together, and you have the flow rate you want your tankless water heater to handle. For example, if you want two showers to run simultaneously and they use 2.6 gallons per minute. Your desired flow rate is 5.2 gallons a minute.

Determine temperature rise. You need to subtract the water temperature from the desired temperature. Since water typically comes into a house at 55 degrees, we subtract that from the desired heat of 105–115°. Let’s use 110 in this example. In this case, the expected temperature rise is 55 degrees. We have tankless water heater maintenance and tankless water heater troubleshooting. We also offer water heater leaking repair and hot water heater repair.