Re: Long - term tool storage ?
Indian Land, SC
Weather averages
Overview
Graphs
MonthHigh / Low(°F)Rain
September83° / 63°5 days
October73° / 51°5 days
November64° / 42°6 days
December55° / 35°7 days
According to the chart you've got a 48' swing in average temperatures, that's not too bad. After insulating my unfinished two-car garage and turning it into a shop I found it didn't take much heat to keep condensation more or less at bay here in the PNW. My little 110v oil-filled radiator keeps the place in the 55-60 range all winter but maybe more importantly smooths out the temperature spikes that cause condensation to form.
What about concentrating some of that "waste heat" from the water heater by building a cabinet around it big enough to house your tools? Play around with some high/low venting to create a nice warm dry spot for them to live in.
Steve
If you would have a good boat, be a good guy when you build her - honest, careful, patient, strong.
H.A. Calahan