Duct/Register Placement

[tomlawone]

I bought a house that is 70% complete. The master suite and great room have large windows in the front and fireplaces that take up another wall. Furniture placement is tough. The HVAC contractor wants to place registers in the corners. I have not seen such placement before. Usually they go under windows, so far as I have seen, and there is room under the windows for them. We told him we need the corners for furniture. He says just put the furniture over the register and use a deflector. We have already had to move one duct/register that was right in front of the TV cable outlet where the entertainment unit must go. The unit has no air space below it. So, what is the view of placing registers in corners?

[jeffshvac]

most knowledgeble hvac contractors dont place supplies in corners of a room without checking with the homeowner for furniture locations.in front of windows is best unless its not possible.if its a renovation maybe he has a limited choice for the locations.

[davidr]

It's best to place your registers in front of any glass as this is your largest area of heat loss/gain.

This will also help to counter any cold convective currents during the winter that will be caused by the temperature difference between the glass & the inside temperature.

I personally don't believe register placement in the corners will give you a proper mixing of conditioned air & room air.

There maybe another reason they had to place them in the corner though due to other mechanical, framing, or space related issues. Is this home over a basement?

[tomlawone]

The house is new and is built on a slab. The registers are on the floor of the top floor (two-story). There is a fan in the ceiling of the lower bedroom that has registers in the corners, but there were several empty "bays" to run ducts through. I was worried about the registers in the corner not circulating the room air.