Energy Audits: Walk Through & Analysis
The best way to determine exactly how to cut your energy costs is to conduct an audit of your facilities’ energy use. An energy audit will help you understand where and how energy is used and pinpoint areas for you to focus on in making energy-saving improvements. There are two types of energy audits. A Walk-Through Audit is the place to start because it deals with basic information and actions that are generally low cost or no cost. After implementing actions recommended by the Walk-Through Audit, you may want to have a computerized Analysis Audit done. An Analysis Audit identifies more comprehensive, capital-intensive energy-saving improvements.
A Walk-Through Audit is the easiest and least expensive means of identifying and
evaluating energy use in your school. Since people have a major affect on how energy is
used, this audit pays particular attention to identifying habits and procedures that can be
adopted to use energy more efficiently. Basic information about the systems in your
building is also collected.
There are two ready-resources for performing a Walk-Through Audit. Your operations/
maintenance personnel can gather the data, or your local electric utility may provide this
service. Once the audit has been completed, you will be able to identify energy-saving
The expense associated with this audit generally falls under the operations and
maintenance budget. Encouraging employees to develop energy-efficient habits can be
accomplished by setting new procedures. Equipment-related expense is generally for
repairing or replacing small items that are in poor working condition.
The first step in any audit is performed at a desk pulling together energy use and cost
information. The Energy Planning Ledger on the following page is provided to help
lead you through what information is needed to begin the audit process. Then you are
ready to take a walk through the facilities. Use the Walk-Through Checklist to identify
the easy, low- to no-cost improvements you can make in your facilities. Use it as you
walk through the building and check-off each suggestion as you consider its application
to your situation.
ENERGY PLANNING LEDGER
Heated Sq. Ft. _____________________________
Cooled Sq. Ft. _____________________________
Number of Stories:_________________________
Building Age: _____________________________
Energy Use and Cost
Last Year’s Current Prices Use Cost
Electricity - Consumption kWh $ $ per kWh
- Demand kW $ $ per kW/month
Natural Gas units* $ $ per gallon
Heating Oil gallons $ $ per unit
Other units $ $ per unit
*units may be “therms” (100,000 Btu/therm) or “ccf” (hundred cubic feet) or “mcf” (thousand cubic feet)
Electricity: ___________________________ % of total cost
Gas: _________________________________% of total cost Hot Water Uses: ______________________________________ Predominant Type of Lighting: __________________________ Occupancy Data: ______________________________________
Time Period: _____________________________
Max Number of People: ___________________
CHECK LIST ACTION LIST OBSERVATION OPERATION
Check building __ Monitor outside air use. temperature and __ Avoid heating and cooling at the same time. humidity levels. __ Use modular, localized heating/cooling units where possible.
__ Control system by time-of-use when possible.
__ Use ceiling fans to increase comfort.
__ Shut off chiller during winter if possible.
Check ductwork __ Seal ductwork leaks. and airflow. __ Clean filters and allow free air-flow to grills.
__ Seal unused building openings.
Check condition of __ Install vinyl curtains in loading areas. windows and doors. __ Weather-strip doors and windows, caulk cracks.
__ Insulate: doors, pipes, ductwork. __ Cover and lock thermostats and ventilation controls to prevent unauthorized adjustments.
__ Clean boilers, chillers and condenser coils Check refrigerant
levels. regularly, straighten fans.
__ Do not heat/cool in low traffic areas, hallways or Check thermostat
readings. unoccupied areas.
__ Adjust building temperature by season: lower in winter /
higher in summer. __ Advise occupants to dress appropriately for seasonally maintained building temperature.
Check availability __ Utilize available passive solar heat during cooler months by of passive solar. opening blinds and drapes.
__ Close doors to outside and unheated or uncooled areas.
__ Use ventilation only when required.
__ Establish routine maintenance procedures.
CHECK LIST ACTION LIST OBSERVATION OPERATION
__ Use automated lighting controls. Check when lights are Photocells being used. All-night outdoor lighting
Parking lots Restricted-access areas
Check lighting __ De-energize fixtures/ballasts not in use. levels. __ Reduce lighting to minimum acceptable level forlevels.
Check cleanliness and __ Clean lamps for maximum illumination. condition of lamps and __ Repair broken fixtures.
fixtures. __ Replace non-working lamps/bulbs.
__ Install lowest acceptable wattage bulb. __ Install energy-efficient ballasts.
Check accessibility of __ Add reflectors to existing lighting.
switches __ Label panels and switches so lighting can be monitored
and controls can be accessed.
Check how lights __ Turn off lights not being used..