The Energy Factor measures a water heater's overall efficiency by comparing the amount of energy coming in to the heater to the amount of energy it puts out. An EF generally ranges from as low as 0.5 to as high as 2.0, but the numbers vary between models; a higher number indicates a more efficient model. A First Hour Rating indicates how many g...

A water heater thermostat is a type of thermostat that is attached to a water heater installation. Different kinds of water heater thermostats provide temperature controls for the water that is used for home heating, showers, and bathtubs, kitchen and bathroom sinks, and an additional range of outlets and appliances. A basic hot water thermostat is...

When plumbers and contractors charge by the hour, it pays to have simple hardware. Quick installations can save a bundle.JNOD tankless hot water heaters connect to your current water distribution system via national pipe threaded fittings. No soldering or special equipment required. It just need connect to one 60A circuit breaker..This model tankle...