Environmental Testing Labs (ETL) Multiple Vendor PTAC Test Summary 8/07

ETL Ohio PTAC Test Summary 8/07

Conclusion

ETL Lab Test Ohio performed Data Analysis and Compared OGD PTAC Upgrade with Standard PTAC Operation and produced the result.

ETL Test of The : OGD Vhvac Adaptive Climate Controller (ACC). The study was to determine how much retro-fitting a standard ptac with an OGD Adaptive Climate Controller (ACC) Impacted or Improved PTAC performance in ENERGY USE, DEMAND POWER and CLIMATE IMPACT. The testing was done under controlled and monitored conditions in accord with ISO New England Measurement and Verification (M & V) Methods and other recognized test standards.

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Environmental Test Laboratory ETL Lab Testing

Data Analysis and Compare of: OGD PTAC Upgrade versus Standard PTAC Operation ETL Ohio Lab Aug 2007

ETL Test of The : OGD Vhvac Adaptive Climate Controller (ACC)

The study was to determine how much retro-fitting a standard ptac with an OGD Adaptive Climate Controller (ACC) Impacted or Improved PTAC performance in:

• - Energy Use
• - Demand Power Use
• - Climate Impact

The testing was done under controlled and monitored conditions in accord with ISO New England Measurement and Verification (M & V) Methods and other recognized test standards.

ETL Lab Test Analysis & Conclusions ACC Performance & Energy Savings

OGD’s ACC does decrease peak power demand in nearly all cases (i.e., Lowers Kw Demand and Use).

Greatest benefit is it saves total system energy, it increases operating energy efficiency and improves ptac performance.

Climate data including temperature and humidity show marked improvement with ACC.

ACC upgrade not only meets but exceeds standard PTAC operations, plus M & V efficiency goals

ETL Comparison of Lab Controlled Matched Environmental Conditions of PTAC Operation: