WHATS THE CHEAPEST WATER HEATER TO RUN
The cheapest water heater to run is a Solar Hot water unit. As we know that the Sunlight is free. Although the unit and installation may cost a fortune there will be government cash backs and incentives together with the amount of money you’ll save that will counterbalance the purchase cost.
And for the ultimate in energy efficient hot water combine a gas booster to your solar, this is the cheapest form of water heating.