registers

[melmintz8]

have an at grade addition. . have existing good size furnace to rest of house. much too costly now to extend duct work to addition. Would more registers in older section nearby the addition help in increase temperature in addition?

[bmathews]

Probably not. If you are going to put registers in older section close to new addition. I wouldn't think it would cost a lot more to run them a few extra feet.

[melmintz8]

thanks so much for the reply. The problem is more than just running them a few extra feet. The addition is on grade. There is a touch more than 6 inches between the concrete and the new hardwood flooring. While a 6 inch duct would fit, the end cap would not. ??

[hvacvegas]

Sounds like the "boot", or box the register fits in, will not fit.

Adding registers within proximity of the addition, will actually cause major problems with the old portion of the house. No go.

[REP]

I'm finding it hard to believe you are in the business.You sound too much like a home owner that likes to buy his cars without knowing if there is a motor in it.
There are all kinds of ways to do your addition if you can get 6" pipe in to where a register should go.
Then that is only half the problem as you would have to get the old air out of your addition and back to the furnace.Agin if you can get 6" pipe down there ,there are ways to do that too.

[melmintz8]

THANKS fro the response. REP is right , i am not in the business. Just homeowner. But beeen misguided by contractors. Before I get someone, i WOULD LIKE TO BE A LITTLE BETTER EDUCATED SO i CaN OFER THEM WHAT WOULD WORK WITHOUT SPENDING A BOAT LOAD. Yes the boot is what wouldn't fit without making a huge hole in the floor to fit the boot from above. I believe the return woudl fit. The question is can I run the duct without the boot at all. Or build a box above the floor in the corner to fit the boot. Or woudl it be more cost effective to install a separate smaller unit of some type for the addition. Or just hydronic p[ortable heaters. Roughly 200 square feet of addition.