Jim Laird

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• Jim Laird
• Director of Energy
• Home Depot

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The Challenge

• 225,000 tons on roof
• 12,000 RTUs
• 63 million spend on A/C
• 48 states plus Intl
• 100 outside Contractor
• 25 ton/ 20 ton/ 15 ton units
• 2 (10 ton stg) 4 (5 ton stg)
• 6 Regional Maint. Mgrs
• 20 Assist. M.M. (overseers)
• Hourly Monitoring Person

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HDs Diagnostic World

• EMS
• real time monitor
• Trending - Historical
• Delta Temp R.A.-S.A.
• Electro-Mechanical Control
• Microprocessor IMC -
• Error Codes
• Hand Tool
• English language diagnosis
• Prognostics

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Vision

• Allow Maint Mgr transparency into 50 stores or
  750 RTUs
• Reduce cost of quarterly PM
• Target contractor labor/materials onto only those
  units in need
• Define efficiency of older units
• (when to replace -- Dfn EER)
• Less skilled technician requirement?
• Budget!!!

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Reality

• Achievable
• Accuracy?
• Cost of Implementation?
• More Difficult
• Contractor Acceptance (remember EMS)?
• Change Way Contractor Does Business?
• Will End User Utilize Information?
• Must Have
• 1st Must Provide Labor Savings !
• 2nd Must Provide Efficiency Savings !