I use em here in tx. With ac my room humidity is a bit high 50-60 during summer. And in 40’s winter. So from what I understand, the paks will moderate the highs and lows. I bought an in case hstat (oasis ht) that fed data to phone for a while but it’s glitchy now. I’m still working on it. But it showed good levels when it was working. If I remember correctly there is a great vid out there w Mr. Hoover outlining the benefits of humidi paks. Finally in my area they seem to be lasting quite a while, mitigating cost.