Condensation in Unheated Porch
When we installed A/C, we decided to cool an unheated 3-season porch. We live in New England. The A/C is in the attic as we did not have forced air system and use oil for heating. We were advised to shut all the vents once we start to use heat so that the warm air would not escape into the A/C vents. We had a very cool day and suddenly it got warm (this happened in the winter months), weird weather, and we got condensation only on our unheated porch where the two vents are located. Nothing in the house. We were told it was caused by condensation. Should the vents on our unheated porch be left shut or open in the winter during cold temperatures? One person said open, the other said closed. Thank you.
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