There are loads of reasons to have a tankless water heater. Not only do they reduce your electricity bill, but they also offer hot water on-demand and they can slash your utility bills. In honesty, we think that tankless water heaters are great for everybody – but you’ve got to be savvy about which heater you choose.
This is because if you select one that’s too small, you could end up with one that doesn’t heat enough water. On the other hand, if it’s too big, it could cost you money!
In this article, we’ll look at how to choose the best tankless water heater for your needs.
Think about your hot water demand
The first step is to think about how much hot water you might need. Consider what devices you run simultaneously and put together all their flow rates. You can do this by taking a bucket and working out how long each faucet takes to fill it. Divide the number of seconds it takes for each device to fill the bucket by 60, and you’ll have your flow rate!
Work out the temperature rise
Your temperature rise is calculated by taking away the output water temperature from the feed water temperature. You can measure the feed water simply by using a thermometer and find out your output water temperature.
Find your ideal tankless water heater
The final step is to go tankless water heater shopping! You’ll find that manufacturers offer special sizing charts with maximum flow rates, sometimes with input and output water temperatures. Make sure that you choose the unit size that matches the figures that you calculated, or even exceeds the demand!
Tankless water heaters are great for most homes and log cabins. If you follow these steps, you’ll get a heater that will match your demand and should save you money.
