i.e., A local We recently asked Air and Heat Hospital to give us an estimate for adding a third vent coming into my home office because the office was constantly 6 to 8 degrees hotter than the near-by rooms. David stated there was some of air flow coming into the office. He pointed out that the old-style metal ducts were not connected in some places and were held together only by the insulation wrapped around it. He could put his hand into one duct where the insulation was loose. His suggestion was to replace all the duct-work and move the return vents from the side walls in the hall to the ceiling because of air leakage from the walls to the attic. We had him do what he proposed. He also sealed off the old return in the wall both at the top and at the bottom. The results were amazing! We really hadnt expected such a dramatic improvement. I had never been able to even feel the air on from the far-away duct in my office. I noticed immediately with the new ducts that air was turn