Re: freezers for garages
Depends really, if you stray outside the climate class by a few degrees it’s generally okay as there is some tolerance there but if you go way out (over about 15-20{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}) then expect trouble, even with a chest freezer.
However if your garage is unheated I wouldn’t really recommend any refrigeration beyond a simple larder fridge for the environment and, even then, you can have problems when it gets really hot in summer as the ambient can soar.
HTH
K.