Product review (5 stars): Great product, read for lighting issue help...
I didn't buy my range hood on Amazon, but I wanted to post here to help others who may run into the same issue that I had. After about a year and a half one of my bulbs went out and my replacement bulb, which was different from the original because they don't make the original spec anymore, didn't work. I tried taking it apart and checking the wiring but nothing helped. I finally decided to call tech support and they straightened me out right away. If you have an issue with new bulbs in your Broan range hood, it's probably a tab contact issue. The contact tab at the base of each socket is is shallow enough that most newer bulbs can't reach it. So turn the power off to your oven hood from your breaker box and use a paperclip or needle nose pliers to pry it up a bit, and it should work fine. I hope this helps somebody.

And Broan's tech support is fantastic!