At the nonprofit I work for I noticed a dripping sound coming from above the drop ceiling tiles. I pulled the tiles to find missing insulation on the suction line going through the ceiling, about a foots worth. There was some ice buildup on the 90 degree joint. This spot has been missing insulation for 7 years without a problem, until today.
Would adding rubber insulation over the section solve the problem... or is it a sign something else is probably wrong and to call a technician?
The system is a Carrier 25HBR3 Heat Pump unit that only heats/cools one large meeting room.