How Your HVAC System Uses Electricity
admin • June 18, 2012

While not every HVAC system in your Portland home requires electricity, many of them do. Your air conditioner , electric furnace or water heater and ventilation system all need access to the central power line. So what does that mean for your system and what problems should be you beware of?

How Your HVAC System Uses Electricity

How your HVAC system works depends largely on which components need electricity to operate. Here is a quick summary of how each system uses electricity:

  • Air Conditioning – Most air conditioners are electric and therefore use electricity based on the number of BTUs produced. For example, if your air conditioner produces 25,000 BTUs and has a SEER of 16, it can produce 16 BTUs for every watt of electricity consumed per hour. As a result, it consumes 1,562.5 watts per hour when the system is running at maximum capacity. If it runs at full capacity for 8 hours per day, 30 days a month in the summer, that’s 375 kilowatt hours – which is the measurement unit you’ll see on your electric bill.
  • Heating – Your heating system may not use electricity, as many homes today use gas or oil combustion furnaces or boilers to produce heat. However, if you have an electric furnace, that electric power is used to heat the filament in the furnace. Electricity also powers the blower fan motor which pushes air across the filament and into the air handler. An electric furnace sized to heat a 1500 square foot home can use up to 8,000 watts per hour to produce enough heat for your home. That converts to roughly 5,000 kilowatt hours per month. The current price of electricity will determine how much this actually costs, you but it can really add up quickly.
  • Ventilation – Your ventilation system is almost always going to use electricity to circulate and filter air. While mechanical filters rely on the movement of air to remove certain particles, ventilation systems have a variety of components including fans and possibly even condenser coils to conserve energy as air is exchanged between the inside and outside.

Electricity plays an important role in your Portland HVAC system no matter how your system works. To ensure yours continues to operate as intended, have your power system checked on a regular basis when the rest of your HVAC system is serviced. Call  Clean Air Act today to schedule a maintenance appointment for your Portland HVAC system !

The Clean Air Act technician testing air purity for indoor air quality in Portland, Oregon home.
By Rodger Brown January 24, 2026
Need indoor air quality improvement tips in Portland, OR, this winter? Learn how humidity control, better air filters, and ventilation can help you breathe cleaner air all season.
A woman relaxing indoors during the holidays in a Portland home with clean, healthy indoor air.
By Rodger Brown December 31, 2025
Hosting more this season? Improve holiday indoor air quality in Portland with better filtration, duct cleaning, and HVAC support from Clean Air Act.
Outside view of snow covered Portland, OR to represent the need for furnace tune-up this winter.
By Rodger Brown November 26, 2025
Prevent breakdowns, reduce safety risks, and lower heating costs with a furnace tune-up in Portland, OR. The Clean Air Act keeps your home winter-ready.
An Alpine forest with mountains covered with snow.
By Rodger Brown October 27, 2025
Sealed homes trap pollutants in cold months. Change filters, book HVAC maintenance, upgrade to higher-MERV filters, and add a dehumidifier to manage moisture and prevent mold.
Clear Air technician performing a fall furnace tune-up and filter change in a Washington home.
By Rodger Brown September 30, 2025
Prep for cooler weather with a furnace tune-up, fresh filters, smart thermostat settings, and clean ducts/registers. Get practical energy-saving tips for Washington homes.
Wildfire smoke impacts indoor air too. Learn why changing your air filters during wildfire season.
By Rodger Brown August 26, 2025
Smoke and wildfire in Washington representing why checking HVAC air filter is important.
Show More