Hi Lindsey --
Sounds like a great space!
From your description, I am picturing a ceiling that has everything exposed -- a very industrial look. If that is the case, you may not mind the appearance of a product called the Air Pear.
- You'll see from the website that it is typically specified for more commercial applications, but sounds as though it would be an option if you are OK with the aesthetics.
- The model 10 can be installed 12 to 18 ft from the floor and covers an area 35 feet in diameter.
- Noise level is rated at 44 dbA, which is roughly equivalent to a quiet conversation. Electrical usage appears to be less than a typical ceiling fan.
So, assuming you are OK with the appearance and noise level, one Air Pear sounds like it will provide good results.
Pulling hot air off the ceiling
When we design homes with high ceilings we will frequently coordinate with the mechanical contractor to install return air registers high on the adjacent walls to "pull" the hot air off the ceiling and recirculate it back to the heating equipment, thus destratifying -- and, as you pointed out, saving the homeowner money.
- In your situation, with the supply registers being high, I would be concerned about trying this approach, as it would likely "short-circuit" the air flow.
- It is interesting that the heating system was installed as you describe.
Relocate your supply registers
One other thought would be to work with a mechanical contractor and see if it would be possible to relocate your supply registers down at floor level and introduce high return air registers into the system as mentioned above.
This, however, is not an inexpensive solution.
Other cost effective ways to modify your system
The Air Pear is probably your best value from a first cost and operational cost standpoint. Appropriately placed quantities and sizes of standard ceiling fans is another most cost-effective option.
In any case, I think you would benefit from having a reputable heating/air conditioning contractor look at your space and determine if there are any simple cost-effective ways to modify your existing system for greater comfort and efficiency.
Hope this helps and gets you closer to finding a solution!
For more information:
Use GreenHomeGuide's Find a Pro directory to locate a green hvac contractor near you.
Read Kevin Holdridge's Q&A "How do you insulate a home with cathedral ceilings?"