2013 Nissan Leaf Owner's Manual - Page 241

In-cabin microfilter: The climate control system is equipped with an in-cabin microfilter which collects dirt, pollen, dust, etc. To make sure the air conditioner, heats, defogs, and ventilates efficiently, replace the filter regularly. To replace the filter, contact a NISSAN certified LEAF dealer. The filter should be replaced if the air flow decreases significantly or if windows fog up easily when operating the climate control system. Servicing climate control The climate control system in your NISSAN is charged with a refrigerant designed with the environment in mind. This refrigerant will not harm the earth's ozone layer. Special charging equipment and lubricant are required when servicing your NISSAN climate control. Using improper refrigerants or lubricants will cause severe damage to your climate control system. See ЉCapacities and recommended lubricantsЉ in the ЉTechnical and consumer informationЉ section for climate control system refrigerant and lubricant recommendations. A NISSAN certified LEAF dealer will be able to service your environmentally friendly climate control system. 4-16 Heater, air conditioner, audio and phone systems