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 - Click to enlargeFilter Whistle

The Furnace Filter Whistle notifies you when it's time to replace your furnace filter. Staying proactive by changing your filter regularly can extend the life of your heating and cooling units and allow them to be more energy efficient. Properly managing the life of your furnace filters will not only help you save money, but it will also prevent you from breathing unhealthy air.
  • A clogged or dirty furnace filter significantly increases heating and cooling bills
  • The Furnace Filter Whistle sounds when the filter becomes dirty or clogged, alerting the homeowner that it needs to be replaced



  • N9150
    $1.49
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