My father has always been a large collector of baseball cards, pigskin cards, comic books, plus other things of tremendous value, and he has the most amazing collection plus he keeps everything in a special collection room that he has. He has all kinds of beautiful displays of some of his most valued collection items. He told myself and others a long time ago he invested in the right Heating & A/C component to keep everything in mint condition. He explained how it’s entirely essential to use a enjoyable humidifier to keep the humidity levels just right, then i l earned from him that if the humidity levels are too high, his collectors items could grow mold plus mildew which would ruin everything plus render them worthless. He said if the environment was overly dry, the cards plus comic books could absolutely become destroyed that way as wellâ€¦ So he keeps the ideal temperature control settings, humidity levels, plus all to keep everything preserved perfectly. He really had Heating & A/C zone control installed in his lake home so that particular section is always just right. He rarely lets anybody into that room, only people who he knows he can trust. He won’t even let some family members into his collection room. I’m pretty sure he was even suspicious of the Heating & A/C serviceman who updated his Heating & A/C system to Heating & A/C zone control, but recently he has been telling myself and others that he means to get his items appraised so that he can sell a few things. I feel it’s a shame that he has to get rid of some of his rare collector’s items, although he really could use the currency.