Nora Ureste

Always vent your range hood to the outside. If you vent into your attic, it’s like you are still venting inside. Think of your home as a fish bowl, and the air in it is like water. Air gets all mixed up (imperceptibly) when you have changes in internal/external pressure, and if you vent into your attic all the humidity and particulate recirculates back into your living space. Also, if you vent to your attic, you are likely to end up with a mold problem up there because there is a lot of moisture released from cooking.  Also no venting through a soffit, this will also set you up for a mold problem. See Home Performance channel on You Tube, lots of great info on ventilation, and understanding home chemistry.

We moved to a rural area last year and thought our indoor air would be better than in the city. I have been monitoring our air for the last 3 year with an AirIQ, and we noticed the CO2 was good, but the PM 2.5 was through the roof in our new (to us) home. I am guessing our dirt driveway/road to our home contributes to the high PM. We rigged up a Corsi cube, and that helped but the house is leaky and we currently do not have a range hood that vents outside, so all cooking particulate can’t be exhausted. Personally, I think you should consider monitoring your PM because those particulate get in you lungs. We plan to remodel next year and hoping to add some whole house filtration along with an ERV. So happy you posted this - I am a bit of an IAQ geek and love to see what others are doing.