Extract Ventilation Testing & Commissioning
What is extract ventilation testing?
Extract ventilation testing or as it is commonly known as either Part F testing, vent testing or extractor fan testing is carried out to confirm the flow rate of the installed ventilation fans or system as required by Part F of the Building Regulations. The results will be required by your building control officer and any warranty or NHBC inspectors.
The onsite vent test measures the actual volume of air the extractor fans or ventilation system extracts in litres per second (l/s). The testing is non-destructive and usually takes up to 1 hour to complete for a single dwelling with the results being confirmed immediately onsite and the certificate issued same day.
Our experienced engineers are able to assist you before, during and after the ventilation extract test. Should an extract fan test fail our engineers can assist you to rectify the problem or suggest relevant remedial work to resolve the problem.
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Vent testing expalined?
Want to know more about extract ventilation testing, get the complete low down on the why, how and what. To learn more click here and see our vent testing explained guide.
Extractor Fan Testing
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10 years vent testing experience
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Instant onsite test results
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Sameday certificate issue
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Free pre-test checklists
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Free pre-test telephone support
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Free sameday re-test in the event of a failure
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BPEC certified & UKAS calibrated equipment
What are the requirements for ventilation testing in Part F?
The purpose of the testing is to ensure the correct flow rates have been achieved for the different room types dependent on the system type installed. For guidance on flow rates see below our summary of Part F requirements.
System 1 - Intermittent extract fans and background trickle vents
Minimum Extract Flow Rates
Kitchens (over hob) = 30 l/s
Kitchens (not over hob) = 60l/s
W/C's = 6l/s
Bathrooms = 15l/s
Utility Rooms = 30l/s
System 2 - Passive stack ventilation (PSV) (by specialist by design)
System 3 - Continuous mechanical extract (MEV)
Minimum Extract Flow Rates
Trickle Rate = by design based on number of occupants and property size
Minimum Boost Rates
Kitchens = 13l/s
W/C's = 6l/s
Bathrooms = 8l/s
Utility Rooms = 8l/s
System 4 - Continuous mechanical supply and extract with heat recovery (MVHR)
Minimum Supply & Extract Flow Rates
Trickle Rate = by design based on number of occupants and property size
Minimum Boost Rates
Kitchens = 13l/s
W/C's = 6l/s
Bathrooms = 8l/s
Utility Rooms = 8l/s
Want to know more about extract ventilation testing, get the complete low down on the why, how and what. To learn more click here.
Why Use BEAT?
BEAT Solutions are registered members of iATS scheme which means all our staff are able to provide certificates which are guaranteed to be accepted by all local building control inspectors. All our testing equipment is annually UKAS calibrated to ensure measure accuracy.
Very professional advice, friendly prompt service. Quick delivery of all certificates needed to complete building project.
B Foster - Farnham
Frequently Asked Questions