Just this week I managed to find a local Mechanical Engineer who I had over to discuss the plan I had been working on. I hired him to review the plan and to suggest any modifications based on his calculations. While he's doing this I figured I'd share the plan here. Any comments or suggestions would be greatly appreciated.
- I'm in Central Ontario (-25c to -30c in the winter months to 30c in the summer months)
- Theater is in the basement and is 22' x 14' x 7.5' and will be sealed up rather tight (DD, Acoustic Caulk etc)
- Seating for 6, though 90% of the time, just myself and my wife
- Equipment housed in an adjacent room.
- Existing furnace (single stage, single zone) seems to work well (no heating or cooling complaints in the house)
I'm trying to develop an HVAC plan that works without breaking the bank. What I've come up with is the following:
- Two six inch supplies in the front ceiling. Flex duct would be run from the main trunk inside of "joist mufflers" to a pair of diffusers.
- One six inch "return" built in rear soffit. Rather than tie into the existing cold air return, an inline Panasonic Whisper series exhaust fan would be used to pull air out of the room (and from the PJ box) and dump it into an adjacent space where it would then get picked up by the existing cold air return.
- One six inch "return" built above the rack in the equipment room. This time a Fantech FR-150 fan would be placed under the basement staircase and would be used to pull air out of the equipment room and dump it into another part of the basement.
- A ductless split would be roughed in to provide additional cooling. I would likely purchase a Mr. Slim unit with the Low Ambient Temperature Kit in the spring.
Large Version Here.