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Air Pressure Testing

Preventing building air leakage, infiltration or air permeability and maximizing building air tightness is essential in producing an energy efficient, comfortable and durable building.

Air tightness is key in maximizing the efficiency of air conditioning (and heat recovery) units.

Guidelines have been set out in relation to developments as outlined below. The aim of air tightness testing is to measure the flow of air within a building and identify areas that are experiencing heat loss.

The regulations apply to new dwellings where planning permission has been applied for on or after the 1st July 2008 and where substantial works are not completed before the 30th June 2009

Guidelines in relation to developments

Number of Units Number of Tests Required
1-4 One Test **
5-40 Two Tests
41-100 5% of Dwelling Type
101+ (if target is reached) 2%
101+ (if target is not reached) 5%


The regulations apply to new houses and apartments where substantial work commences on or after 1st July 2008.

For small developments, no more than three dwelling units, a specific pressure test may not be necessary. If it can be demonstrated by way of a report, that during the preceding 12 months a dwelling of the same type constructed by the same builder achieved an acceptable standard.








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