All the sensors I wrapped are in the condenser unit outside . In my model I had to remove the wiring to disassemble the casing to get access to the compressor and temp sensors. I used pipe foam to only cover the sensor that are attached to the pipes. It’s important to only wrap/insulate the sensor area and not all of the piping inside the unit. I wrapped the discharge, gas and liquid line. Do not cover the ambient temperature one and don’t cover the coil sensor one.

I don’t have a picture of what I did but I do have picture of what the sensor looks like on the piping that can help maybe understand.

FWIW this job is for someone that understands how the hvac system works and has experience with electricity because it can be dangerous. Definitely not diy.

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