GU24 lamp fitting

Advantages

• Use of the GU24 fitting provides compliance with a 2008 ruling by the California Energy Commission under Title 24 to require high-efficiency lighting on all residential remodels and new construction. The GU24 fitting maintains the energy efficiency of the light by preventing an occupant from using an incandescent bulb instead of a CFL. Adapters to use incandescent bulbs in a GU24 fitting are illegal in the State of California as they would be a fire hazard in fixtures designed for the lower heat output of a CFL bulb.
• * As of January 2017, GU24 fittings are no longer required for ENERGY STAR or California Energy Code compliance.
• The GU24 fitting allows the overall length of the bulb to be shorter since the threaded base is eliminated.
• Neither of the electrical contacts is exposed during bulb installation or when in service, offering improved protection against electric shock.

  Disadvantages

• Requires proper alignment to install, and most bulbs/sockets make alignment more difficult by obscuring the pin orientation.
• No 3-way lamp support.
• Incompatibility with other bulb types.
• Will maintain a price premium while they are mandated in a minority of jurisdictions.
• While the pins spacing is standardized, there is no standard for base width. Some fixtures shroud or recess the socket, assuming base dimensions of the bulbs they came with.