The window (frame) surface is cold, but the air in the apartment is humid. Humid air condenses on a cold surface (when it drops below the dewpoint temperature).
So you can either make the window fram ... read more
Currrently, you can receive a federal tax credit for 30% of system and installation costs.
In California, the state rebate incentive has been exhausted and is no longer available.
Typically, the price ... read more