How often should I clean the condenser on my Whirlpool refrigerator?

There is no need for routine condenser cleaning in normal home operating environments. However, if the environment is particularly greasy or dusty, or there is significant pet traffic in the home, the condenser should be cleaned every 2 to 3 months to ensure maximum efficiency. To clean it, remove the base grille and use a vacuum cleaner with a soft brush to clean the grille and the front surface area of the condenser. (Page 9)