All our commercial air tightness test procedures are conducted in accordance to ATTMA (The Air Tightness Testing Measurement Association) standards and our aim is to improve the energy efficiency of your building at the most affordable market rates going. We provide testing throughout the UK. Whether you need a test completing in Yorkshire, The Midlands, Greater Manchester or London we can complete testing at an affordable cost.

We recommend getting in touch with us as soon as possible to discuss the details of your air pressure test. This will ensure you achieve the score you are looking for in a timely matter.

One of our trained staff members can talk you through what is required prior to our visit.

What is Commercial
Air Tightness Testing

House Air Tightness Testing  (Commonly referred to Air Leakage Testing or Air Pressure Testing) is a mandatory requirement for part L1A and L2A building regulations for all newly built houses (Commercial and Domestic).
An Air Tightness Test is an energy audit that identifies any areas of unwanted air leakage in a building’s thermal envelope and should not take any longer than an hour to conduct.  The main reason for an Air Tightness Test is to create a more airtight building which in turn will reduce C02 emissions and lead to a reduction in heating costs and unwanted air leakage.

Completing your
Commercial Air Tightness Test

Purple Energy have a dedicated team of engineers working throughout the country to provide accurate testing and invaluable remedial advice, ensuring you achieve the results you require to pass part L building regulations.

The test is a relatively simple and hassle-free experience if the appropriate guidelines are followed prior to our visit. One of our engineers will place a fan or number of fans to an appropriate opening. This is usually an external door. They will then proceed to take multiple readings at different pressures.

Before the test is completed we will tape all of the ventilation extracts, turn off any HVAC units and ensure all windows and doors have been closed.

If there are site works in the dwelling during the testing process they must ensure windows are kept closed and doors are not tampered with. The tightness test procedure should not take more than 45 minutes to complete, after which our engineer can provide you with an air pressure reading.

1 Arrival on site

Wind speed, air temperature and barometric pressures will be taken prior to testing. Quick check of building dimensions.

2 Building Preparation

Placing fan(s) on an external opening. Close all windows and external doors and tape ventilation terminals.

3 Depressurising

Take depressurised measurements from inside the building. Check for air leakage paths.

4 Certification

Provided verbally to the client once the air pressure test has been completed. Certification will be issued within 24 hours.

Getting Ready
for a Commercial Air Leakage Test

Following the recommended guidelines below will provide the relevant information for a successful air pressure test:
  • All windows and doors must be fully installed

  • Gaps and holes must be sealed

  • 110v or 240v power needs to be available in the building

  • All soil pipes should be filled with water

  • Access to all rooms in the building is required

  • Any electrical sockets need to be installed

If there is anything you feel unclear about or you simply want to speak to one of our team members, don’t hesitate to give our office a call.