Category:Energy audit

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This page will provide information on performing energy audits.


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Understanding the Market

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Project Requirements

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To begin, the main components of the building will be inspected to yield the required information to perform an efficiency analysis. Most of this information could be gathered from the manufacturer and/or the equipment operator.

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BoilerW Information required:

  • BTU Output (BTUW)
  • Maximum Load Efficiency
  • Service Area (volume, heating requirement)
  • Type of Fuel
  • Cost of Fuel
  • Type of Boiler Control (manual, automatic)
  • Auxiliary Equipment Used
  • End-Use Devices (specifically control methods)
  • Placement of Control devices (ie. temperature sensors)
  • Automated Control Schedules
  • Average Usage
  • Turndown Ratio
  • Boiler System Dampers
  • Steam Traps (if used)


Burner and Fan System

Information required:

  • Cleaning and Maintenance Schedule
  • Type of Burning Unit
  • Type of Fan Motors



Chilling unit information required:

  • Chiller Type
  • Cooling Capacity (BTU/Hr)
  • Operating Schedule
  • Auxiliary Equipment (types, control, age)
  • Typical Usage (seasonal, etc.)
  • Chiller Controls (manual, automatic)
  • Control Sensors (type and location)
  • Pump Usage/Type (flow, pressure requirements)
  • Sump Heaters
  • Standard Chilled Water Temperature
  • Heat Rejection Fans
  • Minimum Condenser Temperature Limit
  • Maintenance Schedule (level of fouling, cleaning)
  • End-Use Devices (pressure requirements)
  • Refrigerant Charge Limits
  • Purge Units
  • Valve Types

(Equipment and Operation Guide, Pumps, Compressors, Refrigerant)

Note: Cooling storage methods may provide a means to reduce electricity consumption by utilizing cheaper electricity rate periods. These systems are often expensive, suggesting that the cost and long-term savings benefits be weighed against the disadvantages.

Service Water Consumption

Information required:


  • Average water usage
  • Average number of users
  • Pumps (required, type, flow and pressure requirements, manufacturer)
  • Existence of gravity tanks

Water Heater(s):

  • Type of heater
  • Temperature requirements
  • Hot water capacity
  • Recirculation pumps (size, manufacturer)
  • Level of insulation
  • Maintenance and cleaning schedule

Taps/Faucets/Wash Basins:

  • Number installed
  • Type (manufacturer, age, design type)
  • Maintenance schedule
  • Faucet aerators
  • Soap dispensers (type, location, quantity)

Toilets and Urinals:

  • Quantity
  • Type (manufacturer, age, design)
  • Maintenance schedule

Shower Facilities (if required):

  • Quantity
  • Number of uses per shower head per day
  • Faucet Type
  • Existence of water conservation instructions


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