Does high efficiency furnace vent room air outside?

[HeathBanks]

The place i moved to has a high efficiency furnace. It has what looks like intake and outake pvc tubes coming out of it, and venting to the exterior. If i have plants in the basement, will this unit carry smell to the exterior?

The return duct for the house hvac system is in the room i made, I am debating sealing up any cracks in or around it anyways, because i dont want it sucking up my grow air and venting it up into the house, or outside.

 

[HeathBanks]

anybody?

 

[DemonTrich]

I just got a new h/e furnace. I haven't noticed anything out of the ordinary outside. my girls get real stinky about week 6/7. but I have an awesome filtration, so there is no smell in my grow area, nor anywhere else in the building im at.

 

[Ranger]

no, the pipes bring fresh air in and exhaust combusted air out so it should not interact with your basement air.

 

[twistedthreads]

I would seal any leaks anyway. Better safe than sorry..