In some limited justification, we have 6 canned r-40 lights over our kitchen island. They kept the room hot, and it seemed as if I had to replace one every few months. After years of frustration, I changed over to the LED R-40 bulbs ($65 each! ) But I have seen a significant decrease in the heat of the room and $50-100 decreases in my monthly electrical bill as well. If tbese things are responsible for 1/2 of those monthly savings, then they will be worth it. Also I no longer have to keep buying a new bulb every month. this is not (yet) an endorsement, but an update to a post I made 6 months ago in frustration over the cost of these things.