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Tall_Kayak_Guy t1_j9w6tg0 wrote

Make sure you install the furnace whistle so it can go off at 2:00 AM, just like the smoke alarm with the dying battery!

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Bodvarr OP t1_j9w6vne wrote

I don't even know what that is haha

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Tall_Kayak_Guy t1_j9ykwhn wrote

It's a two piece plastic whistle that you pierce through your furnace filter. When the filter becomes clogged, it forces more air through the plastic piece and makes an annoying whistle noise (most likely at 2:00 AM!).

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