Residents in a senior center that SEDAC analyzed complained about cold floors. What was beneath their feet? Not much more than vinyl flooring and 3/4" plywood. The crawlspace vent is partially open to the outside and it is winter.
The floors, rim joist and ductwork are all uninsulated. Cold air enters the crawlspace vents and cools the floor and supply air ducts. The cold ducts cool the warm supply air before it even enters the space.
Properly insulating the band joist, floor and ductwork would not only reduce energy costs but significantly increase the floor temperature and interior comfort conditions. Depending on if the crawlspace is ventilated or not, i
nsulation can either be placed between the floor joists or on the crawlspace wall.
SEDAC Smart Tip:
If your floors are cold, find out why. Poor insulation is likely the culprit.