Out of concern for the environment, I am considering installing a solar water heater, but now I am told that Merlin produces less greenhouse gas than solar with electric boost. How can this be true?
Based on the Western Australian Government’s own figures in support of solar water heaters, it can be seen that the expected CO2 emissions for a typical solar water heater with electric boost would be approximately 1.138 tonnes per annum, based on the coal-generated electricity consumed. For the same amount of hot water delivered, the Merlin 600E emits about 1.125 tonnes. In view of the above, it would be difficult to make a case in support of electric boosted solar over a Merlin 600E on environmental grounds, and even more difficult on economic grounds.
