US05 will handle 22 deg ok, but try to avoid big swings in temp. An old fridge, even a dead one, will help with this. When I started out I used an extra large ice box that could fit my fermenter in. Anything insulated is excellent. If you have, or can get, an old working fridge all the better because then, as nosco said, you can wire up and STC100 temp controller or, as I did, buy one pre-wired online, and you ferment at what ever temp you want.