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Energy Management

Kenergy is committed to providing helpful, up-to-date information for commercial and industrial members. Below are commercial building energy conservation recommendations. You may also find helpful the U.S. Department of Energy's business section at http://www.energy.gov, including information on motor sizing, maintenance and energy-saving tips.

Commercial energy-saving recommendations

Building envelope:

  • Add insulation where needed.
  • Upgrade existing single-pane windows with double-pane or storm windows.
  • Repair poorly fitting windows and doors.
  • Install door sweeps under all exterior doors.
  • Caulk and weatherstrip around all windows, doors, through-the-wall equipment and other penetrations to outside.
  • Install automatic doors in vestibules if possible. Install flexible moldings and rubber strips around overhead doors.
  • Install plastic doors and entrances to refrigeration and storage areas.
  • Minimize window and door openings.
  • Seal ducts and access doors in equipment rooms to minimize bypass of hot and cold air.
  • Install heat recovery systems where possible.

Heating:

  • Lower thermostat setting to 72 degrees. Each degree less saves 4 percent on heating costs.
  • Use night setback on heating system during unoccupied hours.
  • Check and calibrate all automatic temperature controls.
  • Keep air movement in and out of heating units unobstructed.
  • Perform routine maintenance, such as change filters, clean all fans, coils, heating elements and controls.
  • Add insulation to existing pipes, tanks and ducts.
  • Locate thermostats away from outside walls, drafts and equipment.
  • Install key-lock covers on all thermostats to prevent unnecessary adjustments.
  • Install enclosures around rooftop units to reduce radiation and wind losses from exposed ducts.
  • Cluster heating equipment and locate away from cooling equipment.
  • Consider zoning with an energy management system in larger applications.
  • Consider heat recovery systems in larger applications.
  • Install thermostat controls on all heating equipment.
  • Use exhaust fans only when necessary.
  • Install insulated window coverings on large glass areas.
  • Set temperature back one hour prior to closing.
  • Use spot heaters in areas having large volume and low occupancy.

Cooling:

  • Insulate duct system and seal or tape duct joints.
  • Perform routine maintenance such as: change filters regularly; clean fans, coils, compressor, controls, etc.
  • Use ceiling fan instead of air conditioning where possible.
  • Raise thermostat setting as high as comfort will allow. Each degree above 78 saves 8 percent in cooling costs.
  • Turn off unnecessary cooking and heating units.
  • Shade windows from direct sunlight by installing canopies, awnings, etc.
  • Install reflective film on windows and utilize drapes, blinds, etc.
  • Clean evaporator and condenser coils regularly.
  • Keep air movement in and out of cooling units unobstructed.
  • Consider replacing inefficient air conditioning equipment with high-efficiency units.
  • Use night setback on cooling system during unoccupied hours.
  • Use fresh air when temperature permits.
  • Set temperature up one hour prior to closing.

Ventilation:

  • Use fresh air ventilation instead of heating and cooling when possible.
  • Cover all windows and through-the-wall units when not in use.
  • Properly size exhaust hoods.
  • Install baffles to prevent wind and debris from blowing directly into an outdoor intake.
  • Install a grille on the equipment room door to provide adequate inside air as opposed to outside air.
  • Inspect HVAC units for cleanliness and unobstructed air flow.
  • In the summer, use full outdoor ventilation at night to pre-cool the building and reduce air conditioning load.
  • Consider revolving doors.
  • Install automatic door closers.
  • Install a vestibule.
  • Transfer air from clean areas to bathrooms and smoking rooms rather than supplying fresh air to all areas.

Lighting:

  • Install energy-efficient, low-wattage fixtures and electronic ballasts.
  • Consider a group relamping schedule in larger applications.
  • Clean and maintain lighting system to ensure lighting efficiency.
  • Maintain proper light levels. Do not overlight.
  • Increase light effectiveness by installing special lenses for better light distribution.
  • Consider lowering fixtures closer to task to provide proper illumination at reduced wattage.
  • Replace incandescent with fluorescent or high-pressure sodium.
  • Revise switch circuits to permit turning off unnecessary lights. Consider installing occupancy sensors.
  • Reduce light levels to a minimum after closing.
  • Remove lights over storage racks and other areas that are not used as often.
  • Maintain clean building interior to maximize reflective quality.
  • Eliminate excessive exterior lighting such as security, facade, canopy and advertising lights.
  • Install photocells on all exterior lights.
  • Consider leasing outdoor lighting.

Water heating:

  • Turn water heater thermostat to lowest possible setting.
  • Insulate water heater, water pipes and lines.
  • Use cold water for tasks if possible.
  • Use night setback or turn off water heater at night.
  • Install water heater near maximum point of use.
  • Install hot water heat recovery system.

Machines:

  • Turn off all motors if possible, including photocopiers, computers and elevators.
  • Adjust controls to a temperature, speed or other setting that uses less energy.
  • Use equipment to its fullest capacity.
  • Maintain and repair worn parts of equipment.
  • Avoid use of unnecessary equipment during high peak times.
  • Choose energy-efficient, properly sized equipment when replacing.
  • Consider using waste heat. Excess processed heat may be used to help warm a building or heat water.