Refrigeration coils within refrigeration and air-conditioning units can also become fouled with dust over time. This hinders heat transfer and reduces efficiency. These coils should be checked and cleaned periodically. Boilers and furnaces should be inspected annually and tuned-up by a professional to optimize performance and efficiency. You have made the energy efficient choice.
Savings can be substantial.
It is a misconception that it is more expensive to turn off the heating and cooling and restore the building to a desired temperature later. You have made the energy efficient choice. Install weather stripping and caulking to stop these air leaks. You have made the energy efficient choice. A high efficiency motor may cost slightly more than a standard motor, but this additional cost quickly pays for itself in energy savings.