Air Pressure Testing

Limiting heat loss through uncontrolled air leakage

Confirm your property’s energy efficiency and comply
with Part L requirements

Air pressure testing – also known as airtightness testing or air leakage testing – measures the amount of air escaping from a building to ensure it meets UK Building Regulations Part L. It’s an essential process, but coordinating air pressure testing can be time-consuming, especially for developers who are juggling multiple compliance needs.

Energy Digest takes the stress out of air tightness testing by managing subcontractors on your behalf. From preparation to certification, we’re here to ensure the process is efficient and hassle-free, so your project stays on schedule and you’re free to focus on its success.

Why do you need this service?

Regulatory
compliance

Air tightness testing is not a nice-to-have. It’s required for all new builds and some renovation works.

Reduces heat
loss

Achieve a lower carbon footprint for your property and minimise energy bills for your building’s occupants.

Improves
comfort

Keep indoor temperatures consistent by preventing draughts, which prevents heat from escaping unnecessarily.

Our Process

Arrange an initial
consultation

to discuss project requirements and testing timelines.

Issue pre-test
guidance,

including advice on sealing and preparation.

Arrange testing with trusted professionals

and manage their visits for you.

Perform a blower
door test,

our preferred means of airtightness testing on-site.

Review your
results

and recommend improvements if needed.

Issue your
certification

and deliver compliance reports for regulatory approval.

Why choose Energy Digest?

We’ll follow a tried-and-tested methodology to get your building ready for Part L Building Regulations approval.
After checking seals around windows and doors, and sealing vents and traps, our team will use blower door tests to assess how much air is entering or escaping your property; these provide us with the most accurate air leakage measurements. Once the test has been carried out and the results have been recorded, your air pressure testing reports and all other relevant documentation will be sent to you within 24 hours of your consultant’s visit.

We’ll also provide you with tailored suggestions as to how you can improve airtightness for compliance purposes. If needed, we can arrange optional re-tests to confirm these improvements have had the desired effect. 

Fast turnaround time

We’ll book in your air pressure test as soon as possible, so you remain on track to meet your deadlines.

Multi-disciplined team

We cover 20+ services in the built environment, with specialists providing high-value calculations and strong advice.

Practical solutions

Our professionals provide recommendations that are calculated to ensure real world outcomes, resulting in cost-effectiveness and high impact.

Expert partnerships

We collaborate with leading air testers and our service typically includes project managing these tests on your behalf, free of charge.

Speak to our
experts today

FREQUENTLY ASKED QUESTIONS

Air Pressure Testing
FAQs

The test is conducted by certified subcontractors, managed entirely by our team for a smooth process.

We provide a detailed report identifying air leaks and practical solutions to fix them. Re-testing services are available to confirm compliance once these measures have been put in place.

By identifying and sealing air leaks, buildings retain heat more effectively, lowering energy consumption and bills.

Yes, we handle all subcontractor coordination at no extra cost, ensuring seamless testing and certification. The cost you receive is the quote from the contractor; no additional amount is added on top.

Reports are delivered within 24 hours of testing.

Blower Door or Pulse?

Airtightness testing ensures compliance with Part L or PAS 2035, but which method is right for your project?

• Blower Door Testing: Pinpoints air leaks for effective fixes.

• Pulse Testing: Low disruption testing ideal for occupied buildings or multiple.

Selecting the right testing method depends on your project’s needs. Both methods reduce energy loss, enhance efficiency, and meet airtightness standards.

Spoke with Josh who not only reassured me but asked for a fee that I thought was fair. Thank you Josh. Use again? Definitely.

Steve Quirk

The team really know their stuff – super helpful and always had clear answers to any questions or compliance issues we ran into. Definitely our go-to for any future projects!

Nathan Donnelly

Quick and well priced water calculation service and received an appliance specification report alongside the certificate which was really useful for us and the building control officer, highly recommended!

Ilma Akhtar

Very knowledgeable about building regulations, and the industry. Always goes the extra mile to help out! 5*

Karim Meraga

Still unsure?

We offer free phone call and email support until you’re ready to proceed with us.
Access free support for your project now.

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