then it will have a Summer Bypass function which stops pre-heating the incoming air.
But is that not the issue during a heatwave, the day time air is hotter than normal and the night-time heat is not dropping enough to allow the houses to cool.The up side is that if it's cool at night it takes longer for the house to heat up in the morning sun.
Yesterday inside my house hit a peak of 26 while now at the moment it's 22, 26 is borderline getting a bit hot for me while 22 during the summer is perfect
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