I know it is harder to find things like fans in the winter at times but is it a big problem? Winter is comming and i have not had time to shop for fans and other items,seem to remember years ago i could not find a fan/heater in the wrong season to save my life.
Big box stores usually sell that kind of stuff year round. They do cut back on garden stuff however. You might want to pick up some soil and fertilizer now since the growing season is almost over.
Using H.P. syst. so really will just need several fans,guess ill set fans at a higher priority so my choices are not so limited.
I agree with deuteros, actual garden supplies will become scare for the next several months, but hardware items are available year-round (and online).