Hello. I need some input. We recently had our living room ceiling (due to flood) replaced with recessed lighting installed. Our electrician installed IC recessed lighting (non airtight). At the time, we were not informed that air tight cannisters were available. Our attic was insulated with fiberglass thick insulation. Now, were are feeling hot, Phoenix Arizona air from the attic coming into our home, as well as a terrible amount of dust. Insulation was not put on top of the cannisters in the attic. We are told by our contractor that they do not put insulation on top of the IC cannisters still due to 'fire hazard' and our electrician states that he did not offer the air tight cannisters because they don't 'breathe' the bulb/wiring - and that we CAN fully insulate around the cannisters. Question is, would you just replace the cannisters with the air tight ones, or insulate around them, or put heat resistant HVAC tape over the 'holes' in the existing cannister to plug them and make them air tight? We want to have an energy efficient home, and this is frustrating. Thanks!!