Need to buy or make a Heat Pump Controller

[skiercraig]

You mat want to look into a PLC controller. A Programmable Logic Controller is able to control inputs and outputs by the use of a program which you set the parameters. Some are as small as a pack of cigarettes. Prices start around a %100 buck. The logic for say a GE PLC is pretty much strait forward once you figure out the logic of what you want it to do. Just an idea.