Ya cooling an animal for breeding really isnt a required thing for it to be sucessful .

animals can sense the change of seasons naturally (kinda like a biological clock)
cooling of temps isnt whats sets them into breeding mode . i have had boas that bred all year round and threw in off season without changing any temps .
cooling is IMO overrated , cause some desert animals see 100 during the day and 40-50 at night during the summer time . i guess it just depends on your prefference .