Hi, all. If a return is on the same side of the room as the only 2 supply registers, is that potentially a problem in terms of a basement room (14 W x 17'3 L) getting too warm?
The return register is on the "ceiling" of a soffit at 7'4 from the floor and points at / is parallel to the floor. Register size is 14'' x 8 ''. The 2 supply registers are on the wall perpendicular to the soffit, 5'' from the floor, and face outward into the room (ie: 90 degrees from the return airflow).
The 2 supply registers are a good distance from the return. First one is 4'7 to the left of the return. Second one is 2' away to the right of the return. Both supply registers measure 7 1/2'' x 11''.
The room does not have any windows. One wall (14' front) is entirely underground. Second/side, 17'3 wall is 3/4 underground. Back 14' wall is to-be-built. Fourth, side 17'3 wall is adjacent to our mechanical room with 2 HVAC units - one services the first floor and basement, second the smaller upstairs area. House is in SE Michigan where summer temps are frequently in the 80s. Sometimes 90s. Rarely above that.
The area is open today with only 3 walls. We plan to add a 4th wall and door to make it a separate, usable home theater area. We'll also be adding some theater chairs that are fairly bulky and unfortunately have to sit 24'' or so from the supply register that is to the right of the return. The door will be closed during use to keep sound in the room. The only electronics in the room will be a projector at the back of the room. Projector has a fan running all the time to keep it cool but may generate a small amount of heat when in use.
I've read what seems to be somewhat conflicting info about returns and supplies being on the same side of the room. It appears that it's "ideal" for them not to be. But I've also read that it's the supplies that matter most in airflow, and that having a return on the same side is no big deal after all. Opinions on that do seem to vary quite a bit, so I'm unclear on whether this will work or if the room will get uncomfortably warm during use. Not worried about the winters as much as we can always add blankets if needed.
Note that the basement is finished except for the mechanical room. Most joist cavities coming out of the mechanical room are jammed with HVAC, electrical, plumbing, etc, so moving supplies or returns would be very difficult and maybe even impossible. The 2 supply lines also appear to have been added after the house was built, and drop down from the main HVAC feed, enter the room below the fireblock and below the wall header. I suspect that's because the basement was finished by the last homeowner as a DIY project and he was unable to get those supply lines up into the joist cavities.
Sorry for such a long post, but as I just joined the site I'm not able to post pics yet and had to rely on words to describe things..
Appreciate any and all help!
The return register is on the "ceiling" of a soffit at 7'4 from the floor and points at / is parallel to the floor. Register size is 14'' x 8 ''. The 2 supply registers are on the wall perpendicular to the soffit, 5'' from the floor, and face outward into the room (ie: 90 degrees from the return airflow).
The 2 supply registers are a good distance from the return. First one is 4'7 to the left of the return. Second one is 2' away to the right of the return. Both supply registers measure 7 1/2'' x 11''.
The room does not have any windows. One wall (14' front) is entirely underground. Second/side, 17'3 wall is 3/4 underground. Back 14' wall is to-be-built. Fourth, side 17'3 wall is adjacent to our mechanical room with 2 HVAC units - one services the first floor and basement, second the smaller upstairs area. House is in SE Michigan where summer temps are frequently in the 80s. Sometimes 90s. Rarely above that.
The area is open today with only 3 walls. We plan to add a 4th wall and door to make it a separate, usable home theater area. We'll also be adding some theater chairs that are fairly bulky and unfortunately have to sit 24'' or so from the supply register that is to the right of the return. The door will be closed during use to keep sound in the room. The only electronics in the room will be a projector at the back of the room. Projector has a fan running all the time to keep it cool but may generate a small amount of heat when in use.
I've read what seems to be somewhat conflicting info about returns and supplies being on the same side of the room. It appears that it's "ideal" for them not to be. But I've also read that it's the supplies that matter most in airflow, and that having a return on the same side is no big deal after all. Opinions on that do seem to vary quite a bit, so I'm unclear on whether this will work or if the room will get uncomfortably warm during use. Not worried about the winters as much as we can always add blankets if needed.
Note that the basement is finished except for the mechanical room. Most joist cavities coming out of the mechanical room are jammed with HVAC, electrical, plumbing, etc, so moving supplies or returns would be very difficult and maybe even impossible. The 2 supply lines also appear to have been added after the house was built, and drop down from the main HVAC feed, enter the room below the fireblock and below the wall header. I suspect that's because the basement was finished by the last homeowner as a DIY project and he was unable to get those supply lines up into the joist cavities.
Sorry for such a long post, but as I just joined the site I'm not able to post pics yet and had to rely on words to describe things..
Appreciate any and all help!
source https://hvac-talk.com/vbb/threads/2240416-Return-and-supplies-on-same-side-of-basement-room-is-that-a-problem?goto=newpost
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