Aging Beer in an Actual Cellar

While I have no experience with basements such as yours I do have a section in a finished portion of our house basement. It's fairly stable temperature year round. A bit warmer in summer but...

I've aged several beers for 2-5 years and had no complaints. I currently have a case of various lambics waiting patiently for me to remember them.

My rule is that I tend to consume, say, Brooklyn Black Chocolate Stout at about 4 years because I'm convinced that the temp variation is just enough to shorten shelf life.

So anyway sounds to me like your major concerns will be minimal light and moisture and if you've got those you're pretty close to what the caves were like back in the day when cellaring was used for preservation and cellaring wines began (partly out of necessity).

 

That could be ideal. The biggest issue, besides lack of light, is keeping a steady daily temp and the other issue is not having high temps ever. Ideally if you are below 65 all year, even in the summer, that space is perfect.

 

How the hot water heater and furnace don't put off any heat is a mystery to me as thermal transfer is constant, but OK. Maybe you mean that they're far away from where you'd be storing beer? Or in a different room?

I've cellared huge amounts of beer over the years, not cellaring them purposely, but because in Pennsylvania you used to have to buy a whole case. So... Bigfoot, Old Foghorn, Old Crustacean, Trois Monts, Chimay, Celebration Ale, Our Special Ale, Gales Prize Old Ale, Thomas Hardy's, S.A. Triple Bock, and on and on have been down there. Even now I occasionally store some beer I won't be getting to anytime soon, but I'm not doing it to "age" it.

Out of all of those beers that I stored, I'd say maybe 10% improved with age, and a lot of that was Anchor's Our Special Ale which used to be way too piney! Thomas Hardy's were some of the worst disappointments, but I should also point out that across the board certain years would do better than others, and that may have had nothing more to do with it than when in the packaging run the case was filled. You usually have more oxygen pick up at the start of a run, and then some bad bottles at the end. All in all, if you're going to start aging to get "better beers" I'd say it's a waste. It can be interesting to see what the aging process does though.