We have A2 units running in an 80 to 85 degrees F environment clocked @ 1300 with no problems . Innosilicon A2 is the best miner made to date. When they release their kernel you'll be able to get about 118 MH/s from these. 
Do you think they will ever release their cgminer? From what I heard Innosilicon is done with A2s.