routine maintenance for central air conditioners
???? ????? ???????/ ????? ??????? ??????? / routine maintenance ??????? ??????/ ?????? /central air conditioners ?????/ ??????? / inspection meticulous ???????? ??????? ??? ????????/ ???? ??????/ the motor ? ??????? ???????/the heat exchanger ? ??? ???? ?????/ ????? ???? / thorough cleaning ????????