Complex sentence: While the majority of these pumps mount nearest to the hot water heater and have no adjustable temperature capabilities, a significant reduction in energy can be achieved by utilizing a temperature adjustable thermostatically controlled circulation pump mounted just after the last fixture on the loop.
Split into simpler sentences: While the majority of these pumps mount nearest to the hot water heater and have no adjustable temperature capabilities. A significant reduction in energy can be achieved by utilizing a temperature adjustable thermostatically controlled circulation pump mounted at the last fixture on the loop.