MERV ratings are measured by ASHRAE Standard 52.2 and range from 1–16, rating the filter’s ability to remove small particulates in the ventilation system. Sixteen is the highest level of filtration available as measured by ASHRAE 52.2.

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MERV ratings are measured by ASHRAE Standard 52.2 and range from 1–16, rating the filter’s ability to remove small particulates in the ventilation system. Sixteen is the highest level of filtration available as measured by ASHRAE 52.2.

Investigate whether MERV 13 filters are compatible with your project building’s mechanical system. To earn this credit, MERV 13 filters must be used throughout the building at all outside air intakes and inside air-recirculation returns. No spaces may be

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Investigate whether MERV 13 filters are compatible with your project building’s mechanical system. To earn this credit, MERV 13 filters must be used throughout the building at all outside air intakes. No spaces may be omitted.

If concerned about costs, do a payback analysis. Although some efficient fixtures cost more than typical ones, efficient fixtures significantly reduce energy use and operating costs and often have a payback of 1–3 years. Consider this payback analysis bef

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If concerned about costs, do a payback analysis. Although some efficient fixtures cost more than typical ones, efficient fixtures significantly reduce energy use and operating costs and often have a payback of 1–3 years. Consider this payback analysis before eliminating any installed lighting power reduction strategies from the final construction plan. 

Reduce energy use with lighting controls such as daylight sensors, occupancy sensors, nighttime setbacks, and dimmers, even though they don’t reduce lighting power and won’t help for this credit. 

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Reduce energy use with lighting controls such as daylight sensors, occupancy sensors, nighttime setbacks, and dimmers, even though they don’t reduce lighting power and won’t help for this credit. 

Lighting loads can be reduced through by using indirect lighting, lower ambient light levels combined with efficient task lighting, and efficient fixtures such as LED’s, T5 fluorescent lighting, and compact fluorescent lighting.

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Lighting loads can be reduced through by using indirect lighting, lower ambient light levels combined with efficient task lighting, and efficient fixtures such as LED’s, T5 fluorescent lighting, and compact fluorescent lighting.

Be aware that in ASHRAE 90.1-2007, the lighting power is the maximum wattage of the light fixture and does not include lamp-ballast or lamp-transformer combinations, as was the case with older standards. 

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Be aware that in ASHRAE 90.1-2007, the lighting power is the maximum wattage of the light fixture and does not include lamp-ballast or lamp-transformer combinations, as was the case with older standards. 

For potential additional lighting allowances for decorative or display lighting, check ASHRAE Section 9.6.2. This is a function of the type of merchandise and the space area and usually applies only to retail spaces. 

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For potential additional lighting allowances for decorative or display lighting, check ASHRAE Section 9.6.2. This is a function of the type of merchandise and the space area and usually applies only to retail spaces. 

The lighting designer develops the layout and identifies fixtures so that the design lighting power will be at least 15% lower, on a weighted-average basis, than the ASHRAE standard allows. Use calculation tools (link to documentation toolkit) and ASHRAE

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The lighting designer develops the layout and identifies fixtures so that the design lighting power will be at least 15% lower, on a weighted-average basis, than the ASHRAE standard allows. Use calculation tools (link to documentation toolkit) and ASHRAE compliance forms to run preliminary calculations of lighting density and area. 

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