Hi Maureen, sorry for the late response. If you do have a 5" can than I'm afraid none of the Cree CR6 or LR6 products will work, and Cree doesn't make a 5" retrofit product. You could go with the Halo RL7 downlight which sits somewhere between the LR6 and CR6 series from Cree and is designed to fit 5 or 6 inch cans. It puts out more light than the CR6 and has a 3000K color temperature, which is not quite as warm as the 2700K, but I personally like that color temperature more than the 2700K and use it around my house in a couple locations. Most people who have bought the RL7 from us our happy with them so it may be worth a try.

I will choose LED recessed lights. LED lighting is the most energy-saving way of illumination in the present day, saving up to 90% energy compared to other lighting. This means that about 80-90% of the electrical energy is converted to light, while around 20% energy is lost. On the contrary, traditional lighting such as incandescent light bulbs only operate at 20% energy efficiency. LED light bulbs have extremely long lifespan. They are expected to operate up to 100,000 hours. This means that an LED light bulb could operate continuously for about 11years, which is 3 to 10 times longer than compact fluorescent lamps and 60 times as long as incandescent bulbs. LED lights do not contain any toxic substances. Most fluorescent lights contain a multitude of toxic chemicals like mercury that are dangerous for our health and the environment. LED light bulbs emit less CO2 than traditional incandescent bulbs, and they are 100% recycle, offering you a greener life. LEDs produce little heat or UV rays, while traditional incandescent lights emit a large amount of waste heat. And compact fluorescent lamps are reported to generate a multitude of UV rays, which is a potential risk of getting skin cancer. Because of this benefit of LEDs, LED lights are suitable for objects or materials that are sensitive to heat or UV rays. LED lights operate well under colder and lower outdoor temperature than fluorescent lamps. Therefore, LED lights are extremely suitable for outdoor winter settings. LED lights brighten up instantly as soon as you turn the power on without any seconds. In contrast, fluorescent lights may take several seconds to brighten up. Here is a link that might be useful: My LED recessed lights source here

Are you in California? That would be the only place you "need" an "LED" housing that is marked as "title 24 compliant". There are several different ways to go otherwise. An LED housing may only be different from a standard housing in that there is no screw shell on the end of the wires to hold a lightbulb. There are also adaptors for that in most LED light kits. A retrofit usually means that the LED screws in like a lightbulb. Another difference is that on some strictly LED systems, the transformer is on/outside the housing instead of in the lightbulb which lowers the heat level, presumably prolonging the life of the LED..... The best way to learn about them is to read up on all the different types here. http://www.cooperindustries.com/content/public/en/lighting/brands/halo/recessed/downlighting/_6_inch.html

I have recessed housings in the basement that **don't have** the Torsion Spring brackets or ear brackets. What kind of LED retrofit kits would work in these housings. The ones from Costco require the brackets. Thanks