Case Studies
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HVAC Operation Outsourcing example for a 250,000 square foot office building
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Annual HVAC energy costs before ENFORMA® system was used: $452,500
Problems found using ENFORMA® system:
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40 hp chilled water pump running 24 hrs/day at 100%
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Leaky chilled water valves
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Floors conditioned 24 hours per day
Actions taken to improve performance:
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Chilled water pump scheduled and modulated
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Chilled water valves repaired
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Schedules for the air handling equipment adjusted in the EMS
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Office Building Results
Energy savings achieved: $42,045/yr (9.3%)
ENFORMA® system and repair costs: $25,000
Simple payback: 0.6 years
Cost saved over five years: $210,225
Extra profit for contractor: $185,225
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Performance Guarantee example of the results ENFORMA® provided for a 170,000 square foot department store
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Annual HVAC energy costs before ENFORMA® system was used: $384,200
Problems found using ENFORMA® system:
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Display lighting turned on too early
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Evaporative coolers disconnected
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Variable speed drives with wide swings in speed
Actions taken to improve performance:
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Reset lighting schedules
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Reconnected evaporative coolers and optimized with chiller system
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DDC loops adjusted with greater dampening
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Department Store Results
Energy savings achieved: $42,500/yr (11.2%)
ENFORMA® system and repair costs: $9,900
Simple payback: .25 years
Costs saved over five years: $212,000
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