630 Lumens
630 Lumens
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 Streamlight Sidewinder LED Military Flashlight w helmet mount 14022  US $50.00
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 Leatherman Led Lenser P7 175 Lumens Flashlight 880004 up to 630 Ft 847706000442 US $56.97
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 Leatherman LED Lenser P7 Flashlight 880004 US $54.95
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 Leapers UTG 2 in 1 Weapon Flashlight w Integral Picatinny Mounting Deck LT ZLP38 US $61.95
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 Brightest PAR38 E26 Base 42 Bright White SMD LED Wide Angle Flood Light Bulb US $29.00
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 Leatherman 880004 LED Lenser P7 Flashlight Black US $48.99
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 BLACK P7 175 LUMENS FLASHLIGHT NYLON SHEATH LED LENSER IN CLAM 880003 8607 US $53.95
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 BLACK P7 175 LUMENS FLASHLIGHT NYLON SHEATH LED LENSER IN BOX 880004 8407 US $53.95
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 Streamlight Sidewinder Tactical Flashlight Military Model Olive Drab 14027 US $74.99
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 Fenix TK40 Cree MC E LED 630 Lumens AA Flashlight Torch US $139.95
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 Fenix TK30 Cree MC E LED 630 Lm 18650 Flashlight Torch US $139.95
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 Fenix TK30 Cree MC E LED 630 18650 Flashlight Torch SET US $155.99
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 Sunwayman CREE MC E LED Outdoor Flashlight Black w Battery Indicator 630 US $149.99
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 Sunwayman M40C Cree MC E Magnetic Control Flashlight FREE SHIPPING US $158.98
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 Maxpedition Fenix TK40 630 Lumens Black Flashlight US $154.99
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 NEW LED Lenser P7 3 Level Flashlight 175 Lumens US $55.00
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 Fenix TK40 Cree MC E LED Flashlight Torch 630 Lumens US $137.00
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 NEW 900 Lumens SSC P7 LED Flashlight Torch Battery Charger Set US $69.99
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 MTE M 2 Flashlight 5 mode 170 Lumen Focusable Cree AAA US $30.00
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 Sunwayman M40C Cree MC E Magnetic Control Flashlight US $164.95
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 FENIX TK30 TACTICAL FLASHLIGHT 630 LUMENS CREE MC E LED USA SELLER SALE US $129.95
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 Zebralight H51 LED Headlamp Flashlight Torch US $64.00
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 New LED Flashlight UTG 2 in 1 Tactical LED Flashlight with Red Laser US $73.99
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 Fenix TK30 MC E LED Flashlight 630 Lumens FX TK30B NEW US $138.95
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 LED Lenser P7 High Performance Tactical LED Flashlight 175 Lumens Black 880003 US $54.99
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 MTE M 2 Flashlight 5 mode 170 Lumen Focus Beam Cree LED US $30.00
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 Streamlight Sidewinder Tactical Flashlight Military Model Coyote Tan 14006 US $68.99
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 Streamlight Sidewinder Tactical Flashlight Military Model Olive Drab 14007 US $59.99
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 Sunwayled M40C MC E LED 4Mode 630Lumens Flashlight 123A US $164.49
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 Fenix TK40 Cree MC E LED AA Flashlight Torch 630 Lumen US $127.59
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 Sunwayled M40C MC E LED 630 Lumen flashlight 123A 18650 US $164.50
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 SUNWAY LED M40 C Flashlight Torch cree mc e 630lumens US $195.60
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 Fenix TK30 Cree MC E LED Flashlight Max630Lumens US $123.88
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 Leatherman Led Lenser P7 175 Lumens Flashlight 880003 up to 630 Ft Free Shipping US $58.35
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 Fenix TK40 Cree MC E LED 630 LM 2 Mode Flashlight Torch US $139.95
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 SUNWAYMAN M40C LED FLASHLIGHT 630 LUMENS MULTI COLOR LEDS SHIPS FREE FROM USA US $164.95
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 Fenix TK40 Cree MC E LED Flashlight Sanyo Charger Set US $189.99
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 LED Lenser 880004 P7 LED Flashlight Black US $49.95
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 MTE M 2 Flashlight 170 Lumen 30 Lumens Focus Beam 18650 US $28.95
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 NEW UTG 2 in 1 Tactical LED Flashlight with Red Laser FREE SHIP US $78.49
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 Fenix TK30 MCE LED 630 Lumens 18650 3000 protect Set US $155.88
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 Fenix TK30 MCE LED 630 Lumens 18650 CR123 6 modes US $131.99
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 Fenix TK30 630 Lumens LED Flashlight BRAND NEW WARRANTY FREE SHIPPING US $139.95
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 Fenix TK40 Cree MC E LED 630 Lumens AA Flashlight 2010 US $131.99
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 Fenix TK40 High Performance Cree MC E LED Flashlight Max 630 Lumens AA Torch US $129.95
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 Streamlight Sidewinder Tri Colored LED Tactical Military Flashlight 14001 ODG US $64.78
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 ROFIS ER10 SS Cree XP G R5 Stainless Steel LED Flashlight US $47.99
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 Fenix TK30 MCE LED 630 Lumens 18650 CR123 6 modes US $123.50
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 Sunwayled M40C MC E LED 630 Lumens flashlight US $168.50
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 Underwater Kinetics UK4AA eLED CL AS2 Flashlight Front Switch Safety 14439 US $68.99
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 Cree XLamp MC E RGBW LED Emitter 430lm 700mA with 20mm Star Platine Base US $13.99
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 Fenix TK40 UPGRADED Cree MC E LED 630 AA Flashlight US $134.95
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 TrustFire X9 CREE XML XM L T6 LED Flashlight Torch 2x 4200mAh Battery2xCharger US $53.99
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 NEW Streamlight Sidewinder Tactical Flashlight w 14002 US $58.49
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 Underwater Kinetics UK4AA eLED CPO AS Flashlight Front Switch Black Blister US $68.99
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 Fenix TK40 LED flashlight 630 lumens US $99.00
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 Fenix TK30 LED flashlight 630 lumens US $110.00
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 Streamlight Sidewinder Tactical Flashlight with Articulating Head Coyote Tan US $68.99
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 PELICAN 2330 BLK M6 LITHUM LED FLASHLIGHT FREE HOLSTER US $65.60
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 Fenix LED Flashlight w Extension Tube 630 Lumens TK30 US $96.99
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 FENIX TK40 HIGH INTENSITY FLASHLIGHT MC E LED 630 LUMENS US $49.99
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A Better Mousetrap: High-Efficiency Halogen Lamps Are A Superior Energy-Efficient Lighting Solution For Existing Recessed Downlights
For many homeowners, especially those with children, the kitchen is the most lived-in room in the house. It's a gathering place, a workspace, a study area, an entertainment venue and of course, a room in which to enjoy meals together. Thus, it's not uncommon for kitchen lights to be switched on for four or more hours per day. This presents a legitimate opportunity to save money and reduce air pollution and landfill waste by switching to energy-efficient lighting solutions.
As a source of both ambient and task light, recessed downlights ("cans") are widely used in American kitchens. These fixtures push light down and away to light an area and a work surface at the same time. To enable the homeowner to add ambience, they're often controlled by a dimmer switch.
For homeowners motivated to make a small investment to reduce their electricity use and/or carbon footprint, a simple light bulb retrofit in their existing kitchen fixtures is a smart and easy strategy. Simply remove the existing high wattage (commonly 65-90 watts) bulbs, and insert lower wattage eco-friendly lamps which yield equivalent light output (lumens). But since there are two types of lower cost energy-efficient lighting options from which to choose, which is preferable in this application?
High-Efficiency Halogen Lamps Beat Compact Fluorescent Lamps
We've looked at this question from many angles and have concluded that screw-in (self-ballasted) CFL reflector lamps, for many the obvious choice, are an inferior, energy-efficient lighting solution. Very few consumers are familiar with the new high-efficiency halogen lamps ("HEH") which have hit the market in the last few years. The best of these models already exceed the energy efficiency requirements for incandescent reflector lamps scheduled to take effect in July 2012.
Here, we cite nine reasons why we believe high-efficiency halogen lamps, controlled by a pre-set dimmer switch, offer overall superior, energy-efficient lighting value to CFLs starting with the most important factor for electric light sources, whether energy efficient or not: light characteristics.
Reason 1 - Great Light:
- Halogen light is legendary for being white, bright, crisp, and punchy and making colors appear vivid.
- The light cast by CFL reflectors, while typically warm white, is average at best.
Reason 2 - Superior Illuminance:
- "Illuminance" describes the amount of light on a horizontal surface, measured in "foot candles."
- High-efficiency halogen lamps, especially those with a PAR (Parabolic Aluminized Reflector) configuration, throw concentrated light downwards measurably better than CFL reflectors.
- The result? Much more artificial light where it's needed.
Reason 3 - Effortless Dimming:
- No artificial light source dims better than an incandescent lamp. High-efficiency halogen lamps use improved incandescent technology and don't require special dimmer switches.
- Dimmable CFLs cost more than non-dimmable versions. But dimmable doesn't translate into impressive dimming performance.
Reason 4 - Dimming = Longer Lamp Life:
- Dimming any lamp is an energy-efficient lighting strategy because it reduces electricity consumption and harmful gas emissions. There's an added green benefit when dimming high-efficiency halogen lamps: it extends the lifetime of the lamp.
- For example, constant dimming by just 15% (a pre-set dimmer enables this) will triple the life of the bulb, thereby reducing landfill waste and replacement costs.
- For premium high-efficiency halogen lamps, this translates into 9,000 to 12,000 hours, roughly the same as the average rated life of an Energy Star rated CFL reflector (whose projected life is static even if dimmed).
Reason 5 - Instant On:
- Just like non-halogen incandescent bulbs, halogen lamps reach full brightness with the flick of a switch.
- State-of-the-art CFL reflectors will start instantly but take 30 seconds to a minute's time to reach full brightness (depending on the ambient room temperature).
Reason 6 - Mercury-Free:
- High-efficiency halogen lamps operate without the use of mercury.
- All CFLs contain mercury which must be vaporized to create ultraviolet energy and subsequently, visible light.
- Since mercury is a toxic substance, this necessitates proper recycling at the end of a CFL's life.
- Further, while breakage in a recessed can is a low probability risk, an accident would cause mercury to contaminate the area below.
Reason 7 - Reliability:
- High-efficiency halogen lamps don't contain any electronic components.
- Unlike a screw-in CFL, which contains a precise electronic component called a ballast, neither frequent on/off switching, nor trapped heat will affect the performance or lifespan of these energy-efficient lighting solutions.
Reason 8 - Lumen Maintenance:
- Lumens are the measure of the amount of light emitted by a light source. High-efficiency halogen lamps maintain their initial lumens for as long as they operate.
- CFLs, using different technology, will gradually dim by about 25% over their lifetime.
- Why does this matter? Studies have shown that at age 65, the eyes need three times more light to see as well as at age 20.
- With CFLs in a kitchen, vision needs and light output are moving in opposite directions as time passes.
The Rest of the Story - High-Efficiency Halogen Lamps Are Greener
Reason 9 - Better, REAL Energy-Efficient Lighting:
- The commonly used metric for comparing energy-efficient lighting is lumens of output per watt of electrical input. This method is appropriate for omni-directional bulbs such as traditional A-shape lamps and spiral CFLs.
- Directional lamps (floodlights, spotlights) are different. Their job is not to glow, but to throw light into a defined area or onto a specific surface.
- Compare the measured light (illuminance) on a horizontal surface from two floodlights, a 16 watt CFL BR30 (630 lumens) and a 34 watt HEH PAR30 (1) (612 lumens).
- The CFL has 39 lumens per watt vs. 18 for the HEH. Thus, by conventional measures the CFL is more than twice as energy efficient.
- Measured illuminance tells a very different story: the CFL floodlight casts just 15 foot candles of light onto the work surface in this demonstration. The HEH? 51 foot candles.(2)
- Therefore, at 1.5 foot candles per watt, the HEH bulb is 60% more efficient in real terms than the CFL (0.9 foot candles per watt).
- Or viewed another way, using typical recessed downlight fixtures, to produce an equivalent amount of light on a kitchen countertop or table, where important tasks such as food preparation and schoolwork are performed, a 54 watt CFL floodlight would be needed.
- Not only would such a lamp be more expensive to purchase, it would cost 36% more to operate and generate 36% more air pollution than the high-efficiency halogen lamp.
Notes for Previous Example
1. A 40 watt model was dimmed by 15% to reduce lumen output from 720 to 612.
2. Measured distance of each light source to the surface of the light meter instrument was 50 inches.
Illuminating the Perks of Energy-Efficient Lighting
Impressive consumer value is sometimes found where it's least expected. We're all for selectively installing energy-efficient lighting around the home and place of business because it leverages the fact that the cheapest and cleanest kilowatt of electricity is the one that's never produced in the first place. But if light bulb buyers only paid attention to the popular media or followed Energy Star prescriptions, they would only know to consider CFL reflectors as an affordable, energy-efficient lighting solution for their oft-used recessed downlights.
As we've argued here, the exciting new high-efficiency halogen lamps (spot and floodlights), which are generally priced on par with premium quality dimmable CFL reflectors, are superior energy-efficient lighting solutions for consumers who value great light characteristics, thrift, dimming performance and environmental sustainability for their lighting dollar.
About the Author
Peter Ellinwood is the founder and owner of GreenPoma, an online retailer of hard-to-find, best-in-breed, environmentally-friendly lighting options. During the 25 years he spent in the insurance industry in Boston, Baltimore, and Annapolis, he acquired an extensive background in product management and marketing, but decided to use this knowledge for a greater purpose - selling energy-efficient light bulb, LED, halogen, and CFL products along with great advice. To make a purchase or learn more about going green, please visit www.greenpoma.com.