5 ton unit needs blower motor cap replaced(10 mfd), insulation on blower section reattached, indoor coil cleaning in place. Will need to conduct these repairs before we install filters Older system is r22, empty on refrigerant, fried time delay board, outdoor fan motor need to be replaced and needs screws. also indoor blower psc motor will need to be replaced; highly recommend changing this older system out because there will have to be a lot of repairs including a new r22 indoor coil replacement Older system is a side draft rtu with 19x19 supply and return will need new 4x4 (2) stacked on each side to sit unit on 4x4’s