Temp control in humidors

[makers_fiend]

I am having major temp issues in my humi & cooler right now. I am not sure if the temp on by hygrometers is out or something else. They are both reading 74-77 degrees. The house is kept at 72 or lower during the day/night. It certainly does not feel that hot in the house. I have made the decision to buy a koldfront 28 btl but can't order it until the 15th. What can I do until I get that in?