Because the unit is smaller and more efficient, it needs less oil than a conventional system to do the same amount of work. Conventional unit's tank sizes are usually double or triple the size of an Eco-Rich tank, used to displace the massive amount of heat they generate.

This creates a ripple effect in cost savings - less oil will break down because less oil is needed for operation, and less oil will need to be disposed of - all of which will save the manufacturer hundreds of pounds per years through annual purchasing and waste disposal costs.