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
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.