Solar kiln this time of year

[vfauto]

I put a load of maple and walnut slabs in the new Solar kiln and wondering if it is a waste of time and electricity to run the fans when it is cold outside in New England. When the sun is out it reaches 135 degrees for a short time during the day.

[GeneWengert-WoodDoc]

Two guidelines...the kiln temperature should be over 50F throughout, not just the gable.  When this hot, run the fans.

AND the kiln temperature throughout the kiln should be 25 F hotter than the outside.  In the winter, due to cold outside and low sun angles, you might run the fans for only a few hours on a sunny day in MA.

Get much snow?

[vfauto]

Two guidelines...the kiln temperature should be over 50F throughout, not just the gable.  When this hot, run the fans.

AND the kiln temperature throughout the kiln should be 25 F hotter than the outside.  In the winter, due to cold outside and low sun angles, you might run the fans for only a few hours on a sunny day in MA.

Get much snow? Thanks,got about 8"

[vfauto]

 I took your advice and added a thermostat that overrides the timer when it is under 50°