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Air pressure testing, also known as air permeability or air tightness testing, is a crucial process in ensuring buildings are energy-efficient and comply with building regulations. This comprehensive guide will walk you through the importance, process, and best practices of air pressure testing, as provided by UK Building Compliance. What is Air Pressure Testing? Air

Do I need to comply with Part O? Part O applies to new residential buildings only. This includes residential dwellings, and institutional dwellings (e.g., student accommodation). Share communal areas and common spaces containing more than one residential unit will fall within the scope of Part O, as do live/work units. The simplified method is not

The short answer is no, you don’t have to. An air source heat pump is the most efficient and sustainable heating system meaning that you are less likely to require additional renewable technologies e.g. solar PV. Using other heating systems such as gas or electric boilers is still allowed. However, it will mean that you

The standard set out in Approved Document Part L 2021 is a maximum air permeability of 8 m3 /(h·m2 ) @ 50Pa. However, the air test target will vary between different dwellings & is often lower than the maximum set out above in Part L. This is determined by the dwellings SAP Calculations. A better

The short answer is no! However, under the updated 2021 Part L Building Regulations, gas boilers must be accompanied by some form of renewable energy to meet compliance. This is most commonly solar PV. The solar PV requirement will depend on the fabric and heating specification of the dwelling. When carrying out the SAP calculations