Ed,
I agree with Dick. Keep them all open. The cool air will flow down the stairs. Our air has no trouble keeping up here in AZ with our dry air. Close your shades if you are getting a lot of solar heating from the sun. We had our first 100 deg day yesterday and we are yet to turn our a/c on at home.
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Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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