from Mary in Oshkosh, WI:
#507
Can compact fluorescent bulbs be used outside during Wisconsin winters as long as they are protected from snow and rain?
Make sure you choose a CFL designed for outdoor use.
You should always read the packaging of the CFL to be sure of its proper application, but there are a wide variety of ENERGY STAR qualified CFLs that are designed for use in most fixtures in your home, including outdoor lights, recessed cans, and track lighting.
Extreme temperatures can affect CFLs. Some CFLs can be used outside in temperatures down to –10 degrees Fahrenheit and up to 120 degrees Fahrenheit, though when it is very cold they may take longer to reach full brightness. There are some ENERGY STAR qualified CFLs that are weatherproof and can be used outside where exposed to rain, so check for “weatherproof” models before installing it in your outdoor spot light.
Before using a CFL in a totally enclosed fixture, you should consult the product packaging. CFLs that are not designed for totally enclosed fixtures will typically carry a disclaimer that indicates that they are not intended for this type of application. Because totally enclosed fixtures do not allow air to circulate around the lamp, it causes heat to build up, which can lead to performance issues. For more information, visit energystar.gov.
Published Monday, September 28, 2009