I would like to correct a heating and air conditioning error I made 25 years ago.
My wife and I built our home here in Kentucky 25 years ago. I was a lot smarter then, but not smart enough.
I was the general contractor. I made some mistakes, but for the most part, we have a beautiful, comfortable home.
The mistake I would like to correct is this: The home is built on a slab and I did not have any ducts placed under the slab for heating. We contracted for a geothermal heat system and the contractor put the cold air returns through the walls and placed the grills near the floor, and he put the warm air ducts in the ceilings. That (I am smart enough to figure this out) is contrary to good heating practice since warm air rises. But, he told me that it would be sufficient and that it would work. I trusted him.
Over the years my heating bill has been much higher than I would have expected with geothermal system. So here's my big sixty four thousand dollar question:
Can this be reversed? Can sheet metal ducts be made and inserted between the walls in the current cold air return spots, and cold air return reversed to use the existing registers (grills) in the ceilings? Is it possible, plausible, and within my financial means? (MEANING IF IT COST THE SIXTY FOUR THOUSAND, I CAN'T AFFORD IT !!)
I'd be glad to have a "This Old House" contractor come out and do the work if it can be done. I'm planning on replacing the furnace unit in the near future and would like to correct this dastardly error while I'm in that process.
Thanks, anyone, for your response !!