Just wondering how filthy they are with any soot, ash, or smoke in the air from the fires.

  • TrackinDaKraken@lemmy.world
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    4 days ago

    Wouldn’t the furnace need to run to push air past the filter? I feel like not many people are running their furnace in the summer.

    • Scrubbles@poptalk.scrubbles.tech
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      3 days ago

      AC reuses the same fan that goes through the furnace. Even though the furnace is not on the fan still blows air through it. My heat exchanger sits above the filter, which sits above the furnace

      • Norin@lemmy.world
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        3 days ago

        It depends. Those systems aren’t always tied together, especially in older homes.

        Mine, for example, is old enough that the house is heated with a boiler pushing hot water through pipes in the floor.