Thanks guys. Sometime soon I’ll look and see if I’m in the triple digits on the high and double digits on the low. If things look low then I’ll probably fill it up, then monitor the pressures over a couples days, then week, then month. Hopefully it’s been leaking since it left the factory and took 5 years to hit the low set point.
I’ve never topped up an AC system. I’m guessing I fill the low pressure side, run the system, and check again?