Purpose of vent??

I was performing an inspection on a 2010 build home.

The heating system was a high efficiency Lennox furnace.

What is the purpose of the vent above the filter at the return that went to the blower compartment?

See attached pic.

195411 041 (Small).JPG

195411 041 (Small).JPG

That usually is the set up for a humidifier but I gave up trying to determine what people do, I did not see a humidifier in your pic

Not that that is the right way to do it, but is the system zoned?

No humidifier or zones.

Future Hepa filter add on!:smiley:

This is the unit matched for Lenox.

[FONT=Arial]Lennox X2672 - Healthy Climate HEPA-60 HEPA By-pass Filtration Unit

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The X2672 has been changed to X4914
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Lennox HEPA Bypass Filtration. Best possible air-filtration performance.

Product price is not filled in. This product cannot be purchased.

Availability:: Currently Unavailable
*Product Code: X2672 *Qty:
[FONT=Arial]Lennox X2672 - Healthy Climate HEPA-60 HEPA By-pass Filtration Unit

http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/clear1x1.gif

[/FONT][http://a248.e.akamai.net/origin-cdn.volusion.com/gmhn6.neaq5/v/vspfiles/photos/X2672-2T.jpg](http://javascript<b></b>:OpenNewWindow(’/PhotoDetails.asp?ShowDESC=N&ProductCode=’ + escape(‘X2672’), 640, 600))
The X2672 has been changed to X4914
[http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/buttons/btn_largerphoto.gif](http://javascript<b></b>:OpenNewWindow(’/PhotoDetails.asp?ShowDESC=N&ProductCode=’ + escape(‘X2672’), 640, 600)) http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/buttons/btn_emailafriend.gif

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http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/clear1x1.gif

http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/PBox_Border_Right_Top.gif

http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/clear1x1.gif

Lennox HEPA Bypass Filtration. Best possible air-filtration performance.

Product price is not filled in. This product cannot be purchased.

Availability:: Currently Unavailable
*Product Code: X2672 *Qty:

[FONT=Arial]Lennox X2672 - Healthy Climate HEPA-60 HEPA By-pass Filtration Unit

http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/clear1x1.gif

[/FONT][http://a248.e.akamai.net/origin-cdn.volusion.com/gmhn6.neaq5/v/vspfiles/photos/X2672-2T.jpg](http://javascript<b></b>:OpenNewWindow(’/PhotoDetails.asp?ShowDESC=N&ProductCode=’ + escape(‘X2672’), 640, 600))

Lennox X2672 - Healthy Climate HEPA-60 HEPA By-pass Filtration Unit

http://www.discountfurnacefilter.com/v/vspfiles/templates/ons-dff/images/clear1x1.gif

www.discountfurnacefilter.com/Lennox_HEPA_60_HEPA_Filtration_Unit