Energy Savings

Calculating Energy Savings

13to18seer_chartTo help you learn more about making the best choice for your home, Day & Night® has listed some key factors that affect heating and cooling efficiency. Remember, all Day & Night products meet or exceed federal standards for efficiency and can greatly save on energy costs, especially compared to an older, less efficient system.



Department of Energy Measurements and Standards

In 1992, the Department of Energy set up a system to measure efficiency and established efficiency standards for the heating and cooling industry. Any predated, inefficient units can be wasting your energy dollars. Remember, no product can be 100% energy efficient.

Actual savings on a new Day & Night unit depend on several variables: the weather in your area, utility costs, the insulation of your home, the installation of your existing system, and your personal comfort preferences.

Generally, if you live in a hot climate, you may benefit from a higher SEER cooling unit. If the cold outlasts the warm weather and you have above average fuel costs, you may need a higher AFUE furnace.

Environmental Protection Agency Energy Star Program

The Energy Star Program, initiated by the Department of Energy and the EPA, promotes the use of energy efficient estarproducts. Look for the Energy Star symbol on Day & Night units that rate in the high numbers of efficiency. Day & Night is manufactured by International Comfort Products, LLC Corporation (USA), a voluntary partner in this government program.


SEER stands for Season Energy Efficiency Ratio and applies to central air conditioners and heat pumps. The minimum set by the Department of Energy is 13 SEER and for Energy Star, 14 SEER. The higher the SEER, the greater the energy economy.



AFUE stands for Annual Fuel Utilization Efficiency and applies to heating products. The minimum set by the Department of Energy is 78% AFUE and for Energy Star, 90% AFUE. The higher the AFUE, the greater the energy economy.


HSPF stands for Heating Seasonal Performance Factor and measures heat pump efficiency. The minimum set by the Department of Energy is 6.8 HSPF and for Energy Star, 8 HSPF. The higher the HSPF, the greater the energy economy.

Matching systems

Matching components help a system achieve maximum design efficiency. Your Day & Night dealer follows our dan-systemrecommendations when installing the outside condensing unit for an air conditioner and the evaporator coil inside with your furnace or air handler. In a split system like this, the outside and inside must be matched. If you update one and not the other, you lose efficiency.