I know, why do a construction permit? Well, I live in NJ, and things get tricky when trying to sell. My permit was easily approved (I gave them my EPA 608 cert), but now I want to know what the inspector will be looking for during inspection. I also want to do it right. I am replacing my 28 year old 2.5 ton central AC condenser and evaporator only with a new heat pump setup. Since I have extra solar electric available, I want it to heat my home using the heat pump, keeping the propane as backup for the really cold nights. Keeping the older propane furnace in place as my air handler. I will install a dual fuel board from Goodman, as well as the Firefly R32 leak monitoring. New unit will also be 2.5 ton single speed as this has worked well for me. What will the inspector be looking for? I'm guessing I will have to downsize my 30 amp 2 pole breaker to be no larger than the new units spec for "Max. Overcurrent Protection" (which is 25). Will they be looking for matching AHRI Certificate? What else, or other tips to share for inspection?