Should I use both my upgraded Filter with the Standard Filter at the same time?Updated 2 years ago

The July unit is intended to hold only 1 filter at any given time. We strongly recommend having a filter in at all times, in order to protect the internal components of your A/C unit from any large debris that could interfere with its components. 

When upgrading to our Sky Filter or Carbon Activated Filter, remove and safely keep your Standard Filter. Using multiple filters at once will inhibit airflow into your A/C unit and impact the unit's performance and energy efficiency.