I'm looking into making a small, closet-sized cellar and exploring the cooling options. The problem I see with the portable ACs is that they draw from the humidity in the environment, whereas for aging we want to retain humidity in the environment for the corks. Would it work to run one of these portable ACs in tandem with a humidifier? But then I guess I would have to constantly refill the humidifier. Looking for options/ideas on a budget. I was also considering an old fridge, but they don't have enough space (I need it for carboys, not just bottles). So I'm also considering a freezer (since they have more space) adapted with an Inkbird thermostat, but if the thermostat ever got stuck, it would freeze the wines. Any ideas on how to avoid such a problem?