How can I increase the efficiency and life of my home’s heating and cooling systems?
The most important thing you can do is clean and replace your filters frequently. Also, a system heats and cools more evenly when the blower is in the “on” position. The blower provides constant air movement throughout the home, and allows for better filtration. Finally, shades, drapes, shutters, or screens should be installed on windows that are exposed to extreme sunlight.
How is the efficiency of heating and cooling equipment measured?
The S.E.E.R. (seasonal energy efficiency ratio) is the amount of cooling your system will deliver per dollar spent on electricity. For example, a 3-ton unit may have a S.E.E.R. efficiency rating of 13, 14, or 15. The higher the S.E.E.R. the more efficient the system will be. The S.E.E.R. rating of any given unit can range anywhere from 13 to 21.
How long should my system run in a cycle?
There is no exact answer for how long your system should run during each cycle. The average air conditioner is sized to remove the heat from your home as fast as it comes in, on a 92° day. Therefore, ideally, on a 92° day the system should be able to keep up with the incoming heat, but not gain on it and be able to turn off. The cooler it is below 92°, the more the system will cycle on and off.
Should I close the registers and doors to areas of the home that I do not use on a regular basis?
No. Closing the registers will decrease the systems’ airflow and efficiency. Every system is designed to cool a certain number of square feet. By closing registers and doors in certain rooms, you disrupt the airflow and cause your air conditioning system to work harder to distribute air to other areas of your home. Your system will work harder, to cool less space, making it cycle more and become less efficient.
Should I try to keep my system from running too much?
Every time your system starts up, it will use a lot of electricity and not produce much cooling. Usually a system that is too small to cool the home is more economical to run but delivers less comfort. Even though it runs nonstop, it will usually consume less power than a larger system that cycles on and off. As a rule of thumb, a unit that is either on or off is less expensive than one cycling on and off.
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