Arrived on site to put whole house system on pressure test after shutting down all appliances and pressurizing the system to 10 psi. Has a drop in pressure and and proceeded to go around checking the repairs we made. Found a 1 1/2 union on back side of home that needed to be tightened down in order to seal off leak. Repressurized and test again and held for an hour. Update: 12/15/25 - put system on test and everything held. Inspector came by and passed the inspection so all is good and closed out.