Need advice. I have inter-city furnace installed 1992. GUI125A020IN with 3.5 ton Arcoaire A/C. Noticed small leak between top of furnace and where ACoils mount to it upon turning on A/C this spring. Determined drip tray is rusted out on left side and it drains from right side. Drain is not stopped up. I can remove the humidifier on the above duct section to view. It uses upflow cased coils. I have good access to the unit. Can the part be obtained and can a regular slip in a new condensor water drip tray without having to completely remove. i.e. cut freon lines? Or is this a pro HVAC job. With a 14 year old unit, it would seem I should have some years before having to replace entire unit. Thanks, Derek

I have a Carrier 3 ton heat pump and all the refrigerant had escaped due to a leak on the high side specifically at the condenser coil. The leak is repairable, but do I need to add refrigerant oil that is compatible w/ R-22, cause I noticed there's a lot of oil residue on the area where the leak occured. I am worried that the compressor may not get enough lubrication that it will eventually seize up. I have the equipment and the know how on how to charge a system, but on sealed hermatic compressors which does not have an oil sight glass, I'm not sure.