I have a framed in bathroom in my basement that I need to add a heat duct in. The bathroom is directly beside the furnace. The rectangular vent heating the north side of the home runs through the top of the new bathroom. Can I tap directly into this in order to add heat to this new bathroom? There are no other runs within 6 feet of this but it is within 3 feet of the furnace. Also, if this is OK to tap into, can I cut into the side of the rectangulat venting to add a new run or do I have to go from the top as the rest of the home is done?

The house is a 1200 sq foot rancher on the main floor and the basement is of equal size. All of the other rooms in the basement already have heat vents (5 total).

Thanks!

sure,, I am assuming you are talking about the trunkline (the bigger part of ductwork that the smaller lines spider off. If I`m correct yes you probably can add another, but sense the room is small and so close to the furnace I would put in a very small duct(maybe 4 inch ) and with a smaller 2x6 or 8 inch ventcover with a damper so you can adjust if too much heat in the bathroom,,

sure ,,,I am assuming you are talking about the trunkline (the bigger part of ductwork that the smaller lines spider off of. If i`m correct yes you probably can add another,,but sense the room is small and so close to the furnace I would put in a very small duct(maybe 4 inch ) and with a smaller 2x6 or 8 inch ventcover with a damper so you can adjust if to much heat in the bathroom,,,,,,,,,

Yes, talking about the trunklines. Thanks for the quick response, I will take your advice and use the 4 in duct and damper.

I would put in a very small duct(maybe 4 inch ) and with a smaller 2x6 or 8 inch ventcover with a damper so you can adjust if to much heat in the bathroom,,,,,,,,,Anything bigger and you'll have a bathroom/sauna.