Ventilation Testing

What is Ventilation Testing?

In 2010, Ventilation testing was introduced into Part F of the Building Regulations to ensure that all new dwellings are assessed for their practical performance of ventilation. Ventilation refers to the removal of indoor air from a building and its replacement with fresh outdoor air for one or more of the following reasons:

a) To ensure there is adequate provision of outdoor air for breathing
b) To allow the dilution of airborne pollutants, including odours
c) To control excess humidity (and prevent the build-up of mould)
d) To allow the provision of air for fuel-burning appliances

The key aim of the requirement of Part F is that a ventilation system, under normal conditions, is capable of limiting any airborne particles or pollutants within a building that could be hazardous to people’s health. Pollutants can vary depending on the purpose for which the building is being used. Industrial and commercial dwellings may have a far wider range of pollutants than say, those that are only used for domestic purposes.

How ventilation is tested

Part F of the Building Regulations requires that MHVR Systems (Mechanical Ventilation and Heat Recovery), MEVs (Mechanical Extract Ventilation) and intermittent extractor fans undergo a flow rate test to ensure they are working efficiently. Evidence of this test must be passed to the Building Control Body (BCB) as part of their sign-off procedure.

The assessment of ventilation is undertaken using an anemometer which measures an air flow rate in l/s (litres per second). Different levels of flow rate are applied to different rooms according to their purpose and the equipment within them. A toilet, for example, requires an intermittent extract ventilation rate of 6 l/s, where as a kitchen without a cooker hood would require one at 60 l/s. An office room with a photocopier would require an extract rate of 20 l/s.

Our service

C80 Solutions offers a nationwide ventilation testing service, which can be undertaken at the same time as air tightness and sound testing to save you both time and money. All of our ventilation tests are carried out by BPEC qualified engineers using UKAS calibrated equipment.

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We can help you...

Save money

We will reduce your build costs by adopting the 'Fabric First' philosophy to remove the need for expensive renewable technologies. We carry out a complimentary specification review on every single project to see where we can reduce your costs.

Reduce risk

All our compliance services come with a 100% pass guarantee. We will never charge you for assessments that don't pass. We will always provide free guidance to achieve a pass in the cheapest way possible.

Reduce red tape

We operate a common sense approach to building compliance. Our team comes from a background in volume house building, Architecture and Engineering. We understand all the time, cost and hassle constraints involved in construction.

Save time

We can provide a 24 hour turnaround on services when required. Also, we will produce your new build EPCs on the same day as receiving the air test result.

Fantastic work, amazing turnaround - will be recommending you no end!"

C.Bays (Architect)

Contact us about ventilation testing

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Suggested formats: .dwg, .pdf, .doc, .jpg etc.

If you have plans for your project upload them here. Suggested formats: .dwg, .pdf, .doc, .jpg etc.


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