Suburban furnace in wheelhouse

[hoggsback]

I am moving my heater in my Ice Castle house. I want to use ducting to direct the warm air instead of having it come out the grill on the front of the unit. I have a Suburban NT-20 furnace. I see there are two locations on each side to add duct.

What do I do to the front where the grill was? Cover it with a piece of metal?

How far of a run can the duct be and still get sufficient air flow out?

[outkast7222]

Yes just make a tin cover for the front. You can make the ducts as long as you want but but do your self a favor and keep them equal length. If you don't the longer one will blow much less air. Also the longer they are the more heat your going to lose into the air around the duct.

[aczr2k]

Check out the fish house store they have what you need, round furnace flange transitions, hose and 4" round vents.

[minnesotathorn]

hade my NT-16 suburban furnace in middle of a 14 X 71/2 ft house. had duct work of equal distance along floor on both sides. had to rip the duct work out as I could not get enough heat out of it. once removed the furnace had no trouble keeping up.

[Tom7227]

Wouldn't it be easier and probably more efficient to put in a fan to distribute the air?

[hoggsback]

I put a bathroom in the front V and that is where my furnace is mounted and exhaust exits the wall. It's too late in season to rip out furnace and move it, I plan to do that in the summer. I need to duct my heat through the wall I put up in the front.

Thanks for the info, I will put a piece of tin where the grill was. Then I will install a 4" collar and duct to the wall.