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Heating, Ventilation and Cooling (HVAC) Systems
There are a number of methods used for heating, ventilating and cooling offices. If you work in an air-conditioned office, then over half the energy use will be used to heat, ventilate and cool the building. We recommend you:
- Maximise natural ventilation
- Look after HVAC Systems
- Zone for different levels of air conditioning in different areas
- Opt for Simple Heat Exchange Systems
- Insulate your office
Maximise Natural Ventilation
Have windows that open so you can naturally ventilate the office. If this is not an option make sure the air quality is regularly assessed to avoid sick building syndrome.
Look after HVAC Systems
Any HVAC system must be designed, operated and maintained to a required standard (ASHRAE) or they cause air pollution as a result of poor maintenance
Older cooling systems often use chlorofluorocarbons (CFC’s), which deplete the ozone layer and are active greenhouse gases. (Look for alternative cooling agents)
Set thermostats with adjustable dead bands set between 20 –24Oc
Avoid using single heaters as much as possible. If you have heaters use radiant heaters, not fan heaters.
Have HVAC system serviced regularly!
Opt for Simple Heat Exchange Systems
Heat Exchange Systems are cheaper and less complicated than air conditioning systems. They simply exchange stale, hot air with incoming fresh air, which is warmed by the heat generated from the expelling warm air.
Insulate your Office
Ensure the building is properly insulated above ‘building code’ requirements. Insulation will save energy and provide a healthier, more comfortable environment. Most heat is lost through the ceiling (42%) the rest gets out of windows (12%) or through cracks (12%) or the floor (10%).
We recommended locally produced, natural materials for insulating walls or ceilings:
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