Project: Air Pressure Testing Swindon – Passive House
Air Pressure Testing Swindon Passive House
Technician: Cameron Milne
We were instructed to complete a Domestic Air Pressure test on this new-build PASSIVE HOUSE situated in Swindon.
Using a timber frame membrane, Passive Houses are built to be able to sustain their own heat and are essentially an eco-house. the house technically has no natural ventilation, however MVHR units are installed to control how much air is ventilated in / out of the house to ensure that no heat is wasted and that all air coming in is filtered.
Passive Houses naturally have a low target due to the nature of their design, therefore the required target for the test was 1.
Compared to a normal depressurised test, which measures Air permeability at Q5; a passive house test measures the air change per cubic metre per hour. In simple terms- it measures how many cubic metres of air circulates through the dwelling in an hour.
To carry out this test- both a positive & negative test needed completing and from this, the result is calculated from the average of the two scores. The test was carried out at a pre-completion stage which is not normally possible with a regular air test.
After reviewing drawings, on site testing was ready to be completed. All suitable equipment was set up and checked over to ensure the best possible result.