Over time, the importance of indoor air quality (IAQ) has
been acknowledged by authorities, with the latest standard being BS EN 13779:2007.
This defines “ventilation for non-residential buildings” along with
“performance requirements for ventilation and room-conditioning systems.”
The standard relates to mechanical supply and exhaust
ventilation systems and mechanical elements of hybrid ventilation systems, covering
all aspects including principles, characteristics, requirements, operation and
maintenance.
Included in BS EN 13779 is a system of classification for
indoor air quality, which is as follows:
Category Description CO2 (parts
per million)
IDA 1 High
IAQ <400 o:p="">
IDA 2 Medium
IAQ 400-600
IDA 3 Moderate
IAQ 600-1,000
IDA 4 Low
IAQ >1,000
These classes allow commercial air conditioning
suppliers and building managers to measure IAQ and determine whether equipment
is performing satisfactorily. Poor IAQ has a significant effect on many aspects
of occupied spaces, including staff productivity and wellbeing plus the
efficiency and operational life of air-handling equipment.
If you’re concerned about IAQ and meeting the demands of BS
EN 13779, why not contact our HVAC Services division? We supply, install,
maintain and replace air-handling systems in offices, education establishments,
healthcare facilities and many more building types.
For more information, contact HVAC Services Manager
Andrew Knight on 07850 204915 or email andrew@gibbonsgroup.co.uk.
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