Chris Carruth wrote:
Read that these recessed can lights are horrible in terms of letting
heat and ac up through the ceiling. Are there reasonably priced
retrofit kits that will insulate these?

thanks all

You need a fixture that is designed for the job. You can't retrofit a
fixture that is not designed for it as that would create an unsafe situation
and possible fire hazard.

Chances are you will need to replace the existing fixtures.

--
Joseph Meehan

Dia 's Muire duit