Cut energy loss, meet regulations and build better homes
An airtight home loses less heat, uses less energy and feels more comfortable all year round. That’s why airtightness assessments aren’t just a box to tick – they’re vital for meeting Part F and Part L compliance and building homes that perform.
At Total Energy Assessors, we work with developers, builders and contractors across Sheffield to conduct efficient, accurate airtightness testing. Whether you’re planning a single dwelling or a large scale development, we’ll help you hit your target score and pass final inspections without delay.
Escaping air doesn’t just waste energy – it drives up bills, undermines comfort and risks long-term issues like damp or mould. As Elmhurst-accredited professionals, we carry out airtightness and Part F fan testing with precision, using specialist equipment to assess every detail of your build.
Once we’re done, you’ll receive clear, trustworthy results – plus expert guidance on how to improve performance if needed. From meeting basic compliance to achieving top-tier efficiency, we’ll help you get there smoothly, confidently and without surprises.
We know that airtightness testing is often one of the final steps before sign-off. That’s why we offer flexible scheduling, fast results and a responsive service – so you can hit your deadlines and avoid costly delays.
Accredited and experienced
With over a decade of combined experience, our Elmhurst-accredited assessors carry out airtightness and Part F fan testing to the highest standards. After your assessment, you’ll receive results that are fully compliant with Building Regulations and recognised by building control officers in Sheffield.
Local expert team
We go beyond basic compliance. If your test doesn’t meet the required level, we’ll help you achieve it. Our team will explain issues clearly and advise on cost-effective fixes – helping you get things right without slowing your build down.
How we help you
From getting your quote to completing the assessment, we guide you through every step. Here's how we make it easy:
1
Instant Quote
Select your service, add your details, and get a quote in seconds.
2
Pay online
Pay securely online or by phone. Our team is here if you need support.
3
We do the rest
We’ll schedule your visit and complete the job quickly and efficiently.
Get answers to some of our most commonly asked questions.
What is a good airtightness result?
To comply with regulations, homes must achieve a score of 10 m³/(h·m²) or lower. However, many developments aim for significantly tighter results (around 5 or below) to improve energy efficiency and meet SAP targets.
What is Part F fan testing?
Part F fan testing measures airflow and the performance of mechanical ventilation systems in line with building regulations. It checks that your property is adequately ventilated, complementing airtightness testing by maintaining a balance between energy efficiency and healthy air quality.
What happens during the test?
We temporarily install a fan system in a doorway to pressurise the building, then measure how quickly air escapes. For Part F, we assess the airflow rates of mechanical systems to ensure compliance with ventilation standards. Both are quick, non-invasive processes, and we’ll let you know how to prepare before we arrive.
What if my building fails the test?
No problem – we’ll talk you through any issues and provide guidance on what you need to seal or adjust. In most cases, minor changes can be enough to improve the result enough to pass, meaning you can avoid expensive changes or costly delays. We can also retest once adjustments are made.
Do you test large developments?
Yes – we can test multiple units on the same day and offer group bookings for housing schemes. Just let us know your schedule and we’ll work with you to deliver hassle-free, efficient testing across your site.
Where do you serve?
Based in the heart of Sheffield, we provide airtightness testing to clients in and around the city. Whether your development is located in Attercliffe, Batemoor, Chapeltown or the city centre, we’ll arrive on time and get your assessment done promptly. Just get in touch with our team today to arrange your site visit.
