When installing or replacing a Fantech air exchanger filter, it is important to place it on the correct side for optimal efficiency. A common question is: which side should the filter face?

Simple rule: The aluminum side (mesh) should be facing away from the core of the unit.

Why?

• This mesh acts as a first barrier to capture large debris.
• It extends the filter’s lifespan by preventing premature clogging.
• It ensures better performance of your air exchanger.

Compatible Fantech Filters

This orientation applies to several Fantech filter models, including MERV 6 and MERV 8:

• 402041
• 414647
• 414645
• 414924
• 414646
• … and any other Fantech filter with mesh on one side.

Need help choosing your filter?

If you're not sure which model you need, feel free to contact us. Call us or send an email via our contact page, and we’ll assist you in finding the right filter for your unit.