If you live in the northwest, you take advantage when the sun comes out. As an option, you can turn on the heater. Turn on the heated seats, turn on the heated steering wheel and enjoy. I bet with the side windows up and the hat on, you'll be fine. I don't understand why the mechanicals doesn't work in cooler weather. When the sun is shining and the heater is on, you can still have an excellent time behind the wheel. I had some help with the installation https://www.spartamech.co.uk/air-conditioning/ . For which I am very grateful to them, as the guys did everything very well.