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Hybrid Smart Wall Switch & Bathroom Vanity Luminaire |
Bathroom lights generally operate between five to eight hours per day in dormitories and six to twelve hours per day in hotels. Guests either leave the light on as a nightlight or simply forget to shut the lights off when they leave the bathroom. Not only does this waste electricity, it also means maintenance must replace the lamps more often.
To address these issues, California Lighting Technology Center (CLTC) researchers partnered with MetalOptics (Acuity Brands) and The Watt Stopper/Legrand to develop a bathroom-specific luminaire that integrates a low-wattage light emitting diode (LED) nightlight and a vacancy sensor that saves energy while improving occupant satisfaction. As a complete bathroom lighting package, it includes an emergency battery backup for the LED nightlight array. CLTC researchers also partnered with Watt Stopper/Legrand to develop a wall switch that performs the same task using an existing fixture. Though LEDs and motion sensors are not new, these companies have integrated them into innovative systems which save electricity and decrease maintenance costs.
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| Hybrid Smart Wall Switch |
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Hybrid Smart Vanity Luminaire standby mode |
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Hybrid Smart Vanity Luminaire high mode |
OBJECTIVE:
To prove energy savings and payback of the Hybrid Smart Wall Switch & Bathroom Vanity Luminaire to control lighting system for highly unoccupied environments
APPLICATIONS:
- Hotel
- Dormitory
- Assisted living bathrooms
DESCRIPTION / FEATURES:
- Energy savings: Typically reduces total main lamp use by 40%
- Includes a light switch for bathrooms that turn lights off when the bathroom is unoccupied and provides a low level of ambient light at night
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DEMONSTRATION LOCATION:
Sonoma State University,
Alsace Dormitory
Performance results/energy savings:
25% savings compared to standard T8
~1,500 kWh savings per year
Date of Install: Fall 2005
Timeframe of testing/evaluation: Winter / Spring 2006
Partners: California State University, MetalOptics (Acuity Brands Company), University of California
Sponsors: California Energy Commission |
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| Post-retrofit |
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DEMONSTRATION LOCATION:
University of California, Davis,
Webster Dormitory
Performance results/energy savings:
51% savings compared to T12
~5,620 kWh savings per year
Date of Install: Winter 2005
Timeframe of testing/evaluation: Winter / Spring 2006
Partners: California State University, MetalOptics (Acuity Brands Company), University of California
Sponsors: California Energy Commission
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RESULTS:
- The Bathroom Vanity Luminaire is most cost-effective when used in new construction and renovation projects
- The Hybrid Smart Wall Switch is best for retrofit applications given its relatively low unit price
- Potential for significant energy savings, lower maintenance costs, increased user satisfaction
STATUS: The University of California/California State University (UC/CSU) and Investor-Owned Utility (IOU) Partnership Program has identified incentives for this technology that range from $10 to $30 per fixture.
The MBV Fluorescent Bathroom Vanity Wall Mount is currently available through MetalOptics at approximately $175 for the four-foot version. Other sizes and diffuser options are also available. The WN-100 wall switch, is currently available from Watt Stopper/Legrand at approximately $35 per unit depending on order size. This also comes with various color options for the faceplate and LEDs. Watt Stopper/Legrand also makes a retrofit kit, the HN-200/300, that includes an LED nightlight, PIR sensor, and control unit.
REFERENCE:
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Projects 
