Tankless Water Heaters Comparison Criteria
In order to compare the tankless water heaters available, the following criteria will be measured:
1. Fuel Type
This will depend on the available supply of energy; electrical power appears to be most popular. This is due to ease of connection, but most appliances will require their own fuse box. Gas appliances are more expensive to purchase and install, but cost half as much as electric to run; you have to decide if it is worth the extra output in cash to justify long-term gain.
This is known as the power rating of the appliance, for this exercise I have set the rating between 9kW and 12kW, which seems to be the most popular output.
Very important to us all is the purchase price; this will be quoted excluding fitting.
Most of these appliances will need a call out to a plumber/electrician, so long warranty is preferred. Check if the warranty covers parts and labor.
5. Physical Size
The dimensions of the appliances are important as most of them will be required to be fitted close to where the hot water is required. Dimensions will be included where given.
Note: Some of the Tankless Water Heaters qualify for a Government Grant, as these change frequently, I have given the relevant websites below for you to check out, when selecting a new heater.
1. energysaversgovUSA - government Grants for energy efficient appliances (USA)
2. energystar – grants for tankless water heaters.
3. governmentgrantsuk - government Grants for energy efficient appliances (UK)