MVHR Flow Rate Testing & Certification UK
Independent MVHR Airflow Testing for Building Regulations Part F Compliance
If you require MVHR Flow Rate Testing, MVHR Commissioning Verification, or an independent Part F Ventilation Test, APT Sound Testing provides fast nationwide testing and certification for developers, house builders, M&E contractors and self-build projects.
Our experienced engineers verify that your Mechanical Ventilation with Heat Recovery (MVHR) system achieves the required airflow rates and complies with Building Regulations before handover.
Get a Part F MVHR Flow Rate Testing Quote ▶
What Is MVHR Flow Rate Testing?
MVHR Flow Rate Testing measures the volume of air supplied and extracted by a Mechanical Ventilation with Heat Recovery system within a property.
The testing verifies compliance with:
- Approved Document Part F (Ventilation)
- Building Regulations England
- Ventilation design specifications
- System commissioning requirements
Government Guidance for Ventilation Testing for Approved Document F.
A properly commissioned MVHR system should provide enough fresh air to occupants whilst reducing heat loss and improving energy efficiency.
Why Is MVHR Testing Required for Part F?
Building Control routinely requests evidence that ventilation systems have been commissioned and tested correctly before final approval is granted.
Failure to demonstrate compliance may delay:
✅ Building Control Sign-off
✅ Property Handover
✅ SAP Completionhttps://www.aptsoundtesting.co.uk/sound-insulation-testing/
✅ New Home Warranty Approval
For projects requiring additional compliance services, APT also provides:
Air Tightness Testing For Building Regulations
Sound Insulation Testing for Approved Document E
Independent MVHR Testing vs Installer Testing
Many developers prefer independent testing rather than relying solely on installer-generated results.
Third-party testing helps:
- Verify airflow performance
- Identify commissioning issues
- Confirm regulatory compliance
- Reduce Building Control queries
- Provide independent certification
This is particularly important on larger developments where multiple systems may have been installed.
Common Reasons MVHR Systems Fail a Floe Rate Test
Our engineers regularly identify the following problems when a MVHR system fails the air flow test.
Incorrect Fan Speed Settings
Many systems simply have not been commissioned correctly.
Ductwork Resistance
Excessive duct lengths or poorly installed flexible ducting can reduce airflow significantly.
Dirty Filters
New build dust and construction debris frequently affect performance.
Unbalanced Air Valves
Supply and extract terminals are often left unbalanced following installation.
Poor Installation Practices
Incorrect duct routing can severely impact airflow performance.
Learn more:
Top 10 Reasons Ventilation for Test Failures
Our MVHR Flow Rate Testing Process
Site Inspection
We review:
- System installation
- Ductwork routes
- Ventilation terminals
- Access arrangements
Airflow Measurements
Using calibrated airflow hoods and specialist MVHR Flow Rate Test equipment we measure:
- Supply air rates
- Extract air rates
- Total system performance
Compliance Assessment
Measured airflow rates are compared against:
- Design calculations
- Part F requirements
- Manufacturer data
Certification
A professional report is then issued for Building Control submission.
Who Needs MVHR Testing?
House Builders
Ensure Building Regulations compliance across developments.
Self-Build Projects
Obtain independent certification prior to completion.
Developers
Avoid handover delays and compliance issues.
Housing Associations
Demonstrate ventilation performance across housing stock.
Architects
Provide evidence of building performance and compliance.
Frequently Asked Questions
Does an MVHR system need to be tested?
Yes. Part F requires ventilation systems to be commissioned and tested to demonstrate compliance.
What equipment is used for MVHR testing?
Engineers use calibrated airflow hoods, anemometers and balancing equipment to verify airflow rates.
When should MVHR testing be completed?
Testing should take place after installation and commissioning but before final Building Control sign-off.
How long does MVHR testing take?
A typical dwelling usually takes between 1-3 hours depending on complexity.
Can you test systems installed by another company?
Yes. APT regularly undertakes independent third-party MVHR testing nationwide.
Part F MVHR Vent Testing Checklist ▶
About Darren Helliwell
Darren Helliwell is a Director at APT Sound Testing Ltd, a leading UK provider of independent building compliance testing services. With extensive experience in residential and commercial developments, Darren works closely with developers, housing associations, mechanical contractors and self-builders to ensure properties meet the requirements of Approved Document F (Ventilation) and all relevant Building Regulations.
APT provides professional MVHR (Mechanical Ventilation with Heat Recovery) testing and commissioning verification across England and Wales. Darren has helped hundreds of projects achieve compliance through accurate airflow testing, detailed certification and practical advice for resolving ventilation issues before Building Control sign-off.
Known for his straightforward approach and technical expertise, Darren assists clients throughout the construction process, from pre-test guidance through to final certification. His focus is always on delivering reliable, independent testing that helps projects pass first time, reducing costly delays and remedial works.
Whether you’re constructing a single dwelling, apartment block, housing development or commercial property, Darren and the APT team can provide the specialist support needed to demonstrate ventilation compliance.
Contact Us for MVHR Ventilation Testing
Fast, Independent MVHR Testing & Certification
Need accredited MVHR ventilation testing for Building Regulations compliance?
APT Sound Testing Ltd provides nationwide MVHR airflow testing and certification for:
✅ New-build housing developments
✅ Self-build projects
✅ Apartment schemes
✅ Housing association developments
✅ Care homes and student accommodation
✅ Commercial and mixed-use buildings
Our experienced engineers carry out independent testing in accordance with the requirements of Approved Document F, providing clear reports and certification accepted by Building Control bodies throughout the UK.
Why Choose APT?
- Independent third-party testing
- Fast turnaround of certificates and reports
- Nationwide coverage
- Experienced MVHR testing engineers
- Competitive pricing
- Support with failed ventilation systems
- Trusted by developers, contractors and consultants
Get a Quote Today
For a free quotation or to discuss your project requirements, contact our team:
APT Sound Testing Ltd
📞 01525 303905
📧 info@aptsoundtesting.co.uk
🌐 https://www.aptsoundtesting.co.uk
Book Your MVHR Test
Avoid delays at completion. Contact APT today to arrange your MVHR ventilation testing and ensure your development achieves Building Regulations compliance quickly and efficiently.
Call 01525 303905 or email info@aptsoundtesting.co.uk for a competitive quotation.