Venting Range Hood into Attic Space, Temporarily


My ductless recirculating range hood broke, and I have to install the replacement. I love to cook, so I'm installing a roof vent for a ducted hood.
The range hood I bought has good filtering for grease and carbon filters.

It's winter in MN, and I can't easily work on the roof for a couple of months. Here's my question:

Is it ok for me to vent this into the attic space with minimal use for a couple of months? I understand there are downsides of venting a range hood into the attic, but I need to know if it's fine for a short time.

Best Answer

The biggest issue you have venting into the attic is warm, moist air being blown into a somewhat closed area (aside from the grease and particles you have a filter for). If the attic space you vent into is large, and has good ventilation this shouldn't be an issue. If you have to vent into a small portion of the attic and it looks like the moist air will get caught by insulation then there might be an issue depending on how much it's used.

The warm air will condense readily in a cold attic, so knowing that, look around and imagine what the moist air will do. The other issue is that things can come up and "only temporary" ends up being 3-4 years... Ultimately you'll have to answer for yourself, but for light use an "only a couple months", it's probably fine.