Suburban furnace min. air return grill size?
While looking at our furnace and heating setup today in our TT, it looks like I can easily do some modification to the furnace return air grill location to improve the heating and I could also turn th...
Forum Discussion
Chris Bryant wrote:
I have it in this pdf file naturally, the specs are on a page I scanned upside down, but for all but the over 40k btu/hr models it is 55 square inches. It gives ducting, as well.
That is for older models, but I cannot imagine they have changed that much.
Got it. Model NT20 = 55 sq. in. for return air. Thank you! Now to see if I can get it to work out.
