Tony writes from Monroe City, Missouri: "I have an older 2 story house about 900 sq ft Attic we have suspended ceilings at about 8 foot downstairs would it be better to put insulation above the ceilings on the first floor or more in the attic? Bedrooms are on the second floor."

Answer: Put the insulation between the warm and cold air. In your case, that means in the attic and not above the ceiling on the first floor.