Humidity is the enemy of books, so at the easily least get a dehumidifier for the room, and if you have enough books, then get numerous dehumidifiers
If you are drastic about books, then you need to recognize about more than how they look on a shelf. I guess that not everyone appreciates books and comics the way I do, but I like them. I have been collecting them for years, and even converted our garage into a secure learning room where they could get the consistent air quality they needed. If you want to buy a book, read it, and pass it on, then god bless you for that, then for myself and others I read a book, and then put it carefully on a shelf in the learning room to preserve it. The highest quality of Heating & Air Conditioning equipment has been set up certainally for that room, just to keep the temp and humidity levels even so the books always stay in the best possible condition, but just because you are drastic about books doesn’t mean that you are rich, but that’s okay because you don’t need a dedicated Heating & Air Conditioning system just for 1 room. If you can afford a few thoUnited Statesnd bucks, then go for it, but you can accomplish the same goals with a high quality media air cleaner and dehumidifier, however books are much more forgiving when it comes to temperature as opposed to humidity. Humidity is the enemy of books, so at the easily least get a dehumidifier for the room, and if you have enough books, then get numerous dehumidifiers. I would also get yourself a smart control equipment that can monitor the humidity levels of the room, and it will save you a whole lot of worry.