[JoeP]

Originally Posted by ceptimus

Can't you tweak the control circuit of the aircon? Find the thermister or whatever sensor it uses to measure the room temperature, and add a resistor or whatever to fool the unit into believing the temperature is about ten degrees hotter than it really is?

If it's a regular old fashioned thermostat, they are mechanical devices - bimetallic strips - and can be tweaked by bending the strip with some pliers, or just replace the whole thermostat with one that has a wider operating range.

There's the engineer.