BTU is important parts of tankless water heater reviews and features that we as costumer need to consider before purchasing this important device for our lovely home.
BTU or British Thermal Unit is a rate of speed of heaters to boil the water and deliver it to us as user. gas tankless water heater usually have higher BTU level rather than electric type. This measure the uses of gas to heat the water temperature as you want. BTU is like a horse power in cars, higher value mean more fuel to consume in less time. But they are really fast on delivery service.