Performed a four system cooling maintenance on four 2023 Lennox ODT is 83°.Tested overall operation of equipment confirming the indoor & outdoor equipment were both fully operational.There is three 16x25x4 & one 20x20x5 which were discolored and clogged a quote has been provided to replace with approval replaced all four inch filters on this visit.Blower motor was fully operational not showing any signs of being intermittent or dropping out.Blower wheel was inspected finding it to be dirty when a blower wheel gets dirty it minimizes the efficiency of equipment along with places a strain on equipment and parts which shortens the lifespan of both a quote has been provided to clean blower wheel.Inspected indoor evaporator coil finding it to be dirty when a indoor evaporator coil gets dirty it minimizes the efficiency of equipment along with can affect the ability to heat/cool properly a quote has been provided to clean indoor evaporator coil.Inspected wires along with connections not find