Air Rate Testing and Validation
At Comfort Services, we specialise in air rate testing to help you effectively construct and maintain clean rooms. We can help you whether you need help with air change rates, air tightness or room leakage testing. To find out more about our air rate testing or air rate validation solutions and what makes us the right team for the task, read on.
Air Rate Testing and Validation of Air Change Rates are essential when undertaking the construction and maintenance of a clean room. Comfort Services Group have over experience in the setting up and validation of clean room air systems and pressure cascades. Our qualified and experienced engineers have carried out Air Rate Testing and Validation within a wide range of commercial environments including hospitals, biological labs and pharmaceutical institutions. The purpose of our testing and validation service is to ensure that the air system within a clean room is operating to its’ intended specification and is in line with all legal and regulatory requirements.
Air Change Rates in Clean Rooms
Regular testing of Air Rates ensures that a clean room remains fit for purpose and conforms to regulatory requirements. It is accepted that the ‘cleaner’ a clean room is required to be, the more air is required and therefore the greater the air change rate. In order to prevent cross contamination it is essential that air systems can be relied upon to provide the required number of air-changes-per-hour.
The minimum expectation for any healthcare application is 20 Changes Per Hour but this can vary immensely with some micro-biological & high containment facilities using systems that provide over 800 Changes Per Hour. Our Air Change Rate testing and validation ensures that these ‘per hour’ rates are adhered to and remain in accordance with the original design brief. At Comfort Services Group, we can provide validation data and certificates as part of our Air Rate Testing and Validation services.
Air Tightness Testing for Healthcare Facilities
Air tightness testing in healthcare settings carries a different weight, because these environments can’t tolerate uncertainty. A small rise in the air leakage rate, a gap no one noticed during construction, or a slow shift in pressure balance can undermine infection control without anyone realising.
That’s why facilities are required to undergo air tightness testing in line with strict building regulations that place energy efficiency and patient safety side by side. When testing confirms the building’s energy efficiency is protected and building air leakage is controlled, clinical teams gain confidence that the space supports safe procedures, stable airflow and reliable containment.
Air Tightness Testing for Commercial Properties
Commercial buildings face their own pressures, often balancing operational costs with compliance demands. Air tightness testing helps property owners stay ahead by identifying where warm or conditioned air is escaping, and where the air leakage rate might be quietly raising energy bills.
Buildings that undergo air tightness testing tend to maintain better environmental stability, which supports long-term performance and keeps them aligned with building regulations. When the results highlight unnecessary building air leakage, improvements can be made before larger issues appear. It’s a practical way to strengthen the building’s energy efficiency while protecting comfort, compliance and everyday operations.
What Our Customers Say
“The team at Comfort Services Group were awesome when they carried out the Legionella Control works at our offices, they were very accommodating, Tom and the guys on site were a pleasure to work with. I would recommend the services of Comfort Services Group without reservation. Excellent First impressions with the Office Team, which was mirrored by the guys who did the work. Thanks guys.”
Michael Green
“I have had Comfort commissioning working on different projects for the companies i have worked for over the past 15 years. They have assisted in many difficult projects throughout the country. Andy and Lawrence have been very professional and helpful. i found their attitude, and pro-active approach to be of very high standard. i will always push to use them on future projects”
Chris Richards
“Comfort commissioning are a great company, they deliver great services and the team there are very helpful and efficient. They really do care about their customers and take a keen interest in ensuring a high level of customer service is maintained at all times.”
Gary Clatworthy
“Fantastic service from Comfort from start to finish. Very responsive, friendly, reliable and professional.”
Sarah
“Contacted Comfort Commissioning Services Ltd for advice about unusual deposits in the header tank of an open vented domestic heating system. Not core business for them, but one of their directors responded to me really quickly via email with some excellent free advice which was greatly appreciated. Very impressed.”
Pete Davies
Air Tightness & Room Air Leakage Testing
In addition to Air Rates, at Comfort Services Group we can also assist in carrying out Air Tightness Testing. Otherwise known as Room Leakage testing, Air Tightness testing allows us to monitor and report on the integrity of a rooms construction. Air tightness testing is carried out with a view to identifying where unfiltered air may be entering a clean room and, therefore, compromising the intended protection against micro particles and cross contamination. Our qualified engineers will carry out thorough Air Tightness testing on mechanical ventilation systems as well as physical joints such as door seals to identify any areas for improvement to bring the facility in line with the required specification.
Comfort Services Group is experienced in the testing and validation of Air Change systems for clean rooms, commercial and medical institutions. All our engineers are qualified to carry out testing and validation in line with current industry and legal regulations and requirements. Contact Comfort Services Group today and find out how we can help with your existing system or new clean room project.
Air Pressure Testing
Air pressure testing gives a clearer picture of how an existing building is really performing, not just how it looked on the original plans. The process uses blower door testing to reveal where air slips through the building envelope, often in places no one expects. These small losses accumulate, driving up heat loss and quietly weakening the structure’s overall efficiency.
By exposing the points where improvements matter most, air pressure testing helps owners make targeted decisions rather than guessing. It’s a straightforward way to understand the building’s behaviour, reduce unnecessary energy waste and support long-term performance without disrupting daily use.
Contact Us Today to Book Your Air Tightness or Air Permeability Test
Contact us when you’re ready to arrange air tightness or air permeability testing, whether the project involves domestic properties, commercial spaces or something more specialised. Homeowners across London and the South East of the UK increasingly recognise how both blower door and pulse testing can affect a house in ways that aren’t obvious at first glance, especially when it comes to overall energy performance.
A quick assessment uncovers how well the structure holds air, where improvements can be made and how efficiently the building will operate through the colder months. If you’d like clearer answers rather than assumptions, our team is here to guide you through the process and book a test that fits your schedule.
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Frequently Asked Questions
How to know if you need air rate testing and validation?
If you are tasked with managing a clean room within a hospital, pharmaceutical institution or biological laboratory, you will need to have air rate validation carried out on a regular basis. It is commonly suggested that testing and validation need to take place at least twice a year. Our services ensure your clean rooms meet their intended specifications and adhere with all legal and regulatory demands.
We have decades’ of experience in setting up and validating clean room air systems and pressure cascades. If you’re running a clean room, you will need to have air rate testing and validation carried out.
What is air rate testing and validation?
Air rate testing and validation of air change rates ensure that air systems in clean rooms are operating to the right standard and meeting their intended specifications. Air rate testing is carried out in a wide range of environments, and these include biological labs, hospitals and other medical institutions. The testing process ensures your air systems are complying with all legal and regulatory requirements. The cleaner a room is, the more air is required and the greater the air change rate becomes. At Comfort Services Group, we are proud to be market-leading specialists within the air testing and validation environment.
How to carry out air rate testing and validation?
Our engineers can visit your facility to test and validate your cleanroom, following the very latest protocols. We can create a testing and validation schedule that’s specific to your unique needs. Air rate testing and validation testing must be carried out by highly experienced competent professionals such as the specialists at Comfort Services Group. We can verify air change rates, air flow velocity, volumes and assess the quality of any HEPA installations that might be present in your clean room. All the tests that we carry out will be documented in a detailed report once the process is complete.
Can I do my own air testing with an air tightness tester?
People often assume air testing is as simple as placing a fan in a doorway and watching the numbers climb, but real accuracy doesn’t work that way. During the construction phase there are too many variables — unexpected gaps, shifting materials, uneven air movement — and a quick DIY reading can miss all the things that actually matter.
Professionals know how to measure these changes properly and understand what each fluctuation means for an energy efficient building. They also make sure the results stand up to building compliance, so you’re not left guessing or repeating work later. In the end, expert testing saves time, stress and costly mistakes.
Who Needs Air Tightness Testing?
Air tightness testing isn’t only for large construction projects; it’s for anyone who relies on a building envelope that behaves the way it was designed to. A new house trying to stay energy efficient, a commercial site with heavy ventilation demands, or a healthcare space where controlled air movement really matters — they all benefit from proper testing.
It’s the moment where design meets reality, showing whether the space actually performs or just looks good on the drawings. If building compliance or long-term performance is a priority, then air tightness testing becomes essential rather than optional.
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