Your gonna love the answer it's humidity by some dry packs to suck out the humidity in the air (trust me it's cheaper then a dehumidifier) I usually by the buckets sized one I keep it under my couch and one in the master bedroom and one in my kids room. I was in the same boat around 130am it'd wake me up right after getting home.... Two hundred dollars later one system leak test then calling a few manufacturers they all said well no leak new detector how's the humidity how many people I told them three plus a dog . They said yup buy some stuff to dry out the air and it'll stop sure enough it worked
