Preconditioning can happen any time of the year, again the benefit of getting in a cool car mid summer is as big as a warm one in the snow.
Is there public access between your house and parking? If there’s a path that may present a problem for your install as the trip hazard is an unacceptable risk for Motability.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark