Update: I should have stated that the plan was to repair the leak and continuously monitor the pressure to detect any future leaks. A recent decision was made to replace the heatpump. Installer indicates a pressure range of 20-120 PSI.
I would like to measure the pressure to determine a refrigerant leak in the heat pump. In the summer, a leak manifests itself as low pressure and causes the evaporator to freeze up.
The plan is to request that the AC tech install the fitting on the high side of the garage to measure pressure to detect drops in pressure (leaks).
Question: Have pressure measurements been used to detect leaks and shutdown the system to prevent icing? If yes, is there any reason why this will not work by measuring pressure on the high side (in my garage and out of the elements)?
Any lesson-learned are appreciated.