I have the same issue with condensation. My garage is dug into a hill so the the concrete walls are normally colder than the outside air. My walls sweat so bad I thought the foundation was leaking. It turn out to be condensation. I installed a dehumidifier a few years back and it resolved the problem. I no longer have rusty tools. I do shut it down once the temperature in the garage goes below 40 degrees fahreneit.
The no energy solution to condensation on the concrete walls is to put some spray on insulation on them. If the surface temperature is above the dew point, there won't be any condensation. It'd only take about an inch thickness.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
