NC State Extension Publications

Adjust Your Thermostat

Your thermostat setting has a great influence on your energy costs. To save money, set your thermostat as high as possibly comfortable in the summer and as low as comfortable in the winter. Also, adjust the thermostat when you go to bed, go to work or when you will be gone for an extended period of time. If you can afford it, purchase a programmable thermostat that will automatically adjust the temperature for you.

Clean Air Filters

Clean or replace your air filters regularly, according to manufacturer’s specifications. Dirty filters reduce the efficiency of your system and can block air circulation. Check your filter monthly and replace when dirty.

Keep Supply and Return Air Vents Clear

Furniture, rugs or drapes should not block supply or return vents. You should not shut off a room or vents in a room, especially on a heat pump. Most people think by shutting down a part of the house they are saving energy. What they are doing is hampering air flow on the HVAC unit, causing it to work harder, which can reduce the life of the unit.

Use Ceiling Fans

As you turn your thermostat up in the warmer months, use ceiling fans to make your home more comfortable. Ceiling fans make the room feel cooler because they create a breeze that helps evaporate perspiration. Remember to turn them off when no one is in the room.

Use the "Auto" Setting

If you have central air conditioning and heating, keep the fan switch on “auto” not “on.” The “auto” setting allows your unit to cycle off and on as needed. The “on” setting allows your fan to run constantly, adding to your energy costs.

Publication date: March 1, 2009
Last updated: Oct. 10, 2017
FCS-529-21

There is an alternate Spanish language version of this document here: Ahorre dinero en la calefacción y aire acondicionado de su hogar

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