Energy-Efficient Lighting

One way to reduce your energy bills is to install more efficient light bulbs. Instead of using standard incandescent bulbs, consider using either fluorescent or tungsten halogen bulbs.

Fluorescent

High-efficiency fluorescent lighting can reduce lighting energy costs by up to 75%. In addition, fluorescents last almost 10 times as long as incandescents, for a double benefit.

Today's fluorescent lamps come in a variety of shapes and sizes to fit many different applications. They are ideal for use in basements, workshops, garages, kitchens (especially under counters and over sinks) and laundry rooms.

The newest development in fluorescent lighting is low wattage lamps in shapes and sizes similar to incandescent. These lamps are referred to as "twin tube", Biax, compact or circline fluorescents and are ideal for use in recessed lighting, table lamps and fixture-free sockets in garages, porches, basements and workrooms.

Screw-in Replacements

Fluorescent lamps with incandescent-type screw-in bases or adapters will fit into many incandescent fixtures. Several types are available. The "twin-tube" or Biax lamps come in 5 to 32 Watt sizes and plug into reusable screw-in ballast/adapters. These ballasts have a rated life of 45,000 to 50,000 hours. Direct-wire adapters also are available.

Some compact fluorescent lamps come as a complete lamp/ballast unit. When the lamps burn out, the ballast must also be replaced. However, these lamps will last about 7 to 10 times as long as standard incandescent lamps and are available in 15- to 28-Watt sizes. They are typically used to replace 60-Watt to 100-Watt incandescent lamps.

Circline lamps are fluorescent tubes formed into a circle and designed as direct replacements for incandescents. Some models have ballasts built into the lamp base; others come with two circular tubes-one within the other-offering a wider selection of Wattages. A 27-Watt circline lamp provides the same amount of light as a 150-Watt incandescent, for one-fifth the energy cost.

The following table shows a few typical incandescent lamps and the appropriate fluorescent replacements.

Incandescent Fluorescent Replacement

40-Watt A-19* 11-Watt

60-Watt A-19 15-Watt

75-Watt A-19 20-Watt

75-Watt reflector 20-Watt w/reflector

100-Watt A-19 28-Watt

* A-19 is a designation for the standard incandescent lamp shape.

Fluorescent Facts

Screw-in fluorescents, which are somewhat larger than incandescents, come in a variety of sizes and shapes including globe, tube, and circle styles.
Today's compact fluorescents have much-improved color rendition and a "warmer" light than standard fluorescents.
Some fluorescents are heavier than traditional bulbs because they require a ballast.
Measure a fixture before buying compact fluorescent bulbs. Fluorescents are larger and don't always fit traditional fixtures. Harp adapters can often remedy this problem.
Most fluorescent lamps cannot be dimmed and are not recommended for enclosed fixtures. Fluorescents also require a special ballast for operation in outdoor settings because of sensitivity to low temperatures.
Many fixture manufacturers are now making fixtures especially for these high efficiency lamps. When buying new lighting fixtures, ask for ones designed to accept compact fluorescents.

Tungsten Halogen Lamps

Tungsten halogen lamps have higher efficiency, longer life and whiter light than standard incandescent lamps. They are available in most of the common incandescent lamp shapes and are ideal for use in track, recessed and spot lighting, and in outdoor security and flood lighting. A 150-Watt lamp can be replaced with a 90-Watt halogen flood lamp that gives the same usable light. The halogen lamp also lasts up to three times as long as the standard lamp. Similarly, a 75-Watt flood lamp can be replaced with a 45-Watt halogen flood lamp. Halogen A-line lamps (the classic light-bulb shape) use about 30% less energy than standard lamps.