Today we came out for high energy bills. Evaluated complete 4 ton rheem 2012 with matching furnace. Found completely impacted condenser coil, weak duel capacitor, system low on refrigerant due to leaking evaporator coil. In addition found flue piping not up to current code and minimal flood protection. Compressor is over amping and could fail at anytime and there is no warranty on refrigerant and it could leak out at anytime.