UK’s #1 ventilation solution
Fresh air without energy loss
Our patented ventilation system prevents condensation and mould while maintaining your home’s energy efficiency. Install in minutes with minimal tools required
Was £22.00 (+VAT) now only £12.49 (+VAT) Now with Free delivery saving £4.99
Why Choose Air-Box® ?
Our patented solution addresses common ventilation problems while maintaining energy efficiency

Tested to: BS EN 13141-1
Conforms to:
PASS2030: 2019 and Building Regulations Part F
The ventilation problem
Most UK homes suffer from poor ventilation, leading to condensation, mould growth and poor air quality. Conventional solutions lead to heat loss and wasted energy.
Excessive moisture leads to condensation and mould
Open windows waste energy and increase heating costs
The Air-Box solution
Air-Box provides controlled ventilation that maintains a healthy flow while minimising heat loss. Our patented design ensures optimal air exchange without compromising energy efficiency.
Controlled airflow without excessive heat loss
Patented design blocks draughts while allowing fresh air flow
Why Choose Air-Box® ?
Our patented solution addresses common ventilation problems while maintaining energy efficiency

Tested to: BS EN 13141-1
Conforms to:
PASS2030: 2019 and Building Regulations Part F
The ventilation problem
Most UK homes suffer from poor ventilation, leading to condensation, mould growth and poor air quality. Conventional solutions lead to heat loss and wasted energy.
Excessive moisture leads to condensation and mould
Open windows waste energy and increase heating costs
The Air-Box® solution
Air-Box provides controlled ventilation that maintains a healthy flow while minimising heat loss. Our patented design ensures optimal air exchange without compromising energy efficiency.
Controlled airflow without excessive heat loss
Patented design blocks draughts while allowing fresh air flow
Easy installation
Our patented solution addresses common ventilation problems while maintaining energy efficiency
Step 1: Measure
Measure your window for the correct positioning
Takes just 1 minute
Step 2: Cut
Following the installation leaflet provided cut to size and replace with special seal provided
Great fit
Step 3: Position
Position the Air-Box in your chosen location
Easily held in place – just remove the protective film!
Step 4: Install
Screw the Air-Box into position using the fixings provided
Complete – enjoy your healthy home!
Installation guides provided for both inward and outward opening windows!
Air-Box® Specifications
The Air-Box is designed with precision engineering to provide optimal performance
Colours
White | Brown | Anthracite
Materials
ABS / PVC – All fittings and instructions provided
Installation (without milling or drilling)
Suitable for most PVC window profiles, both inward and outward opening (not suitable for wooden or sash windows)
Additional information
All kits come with installation and product guidance and are compliant with Part F
Technical support
Full Technical Support provided, please contact us via [email protected]
Customer reviews
5.0 out of 5. Based on Google reviews.
Victor Spurrell
Cheshire
We had an ongoing problem with the ventilation in our apatment and I was told we needed new windows! Really glad I found these as they have made such a difference. Highly recommend this and delivery was free for a nice change.
Emily Taylor
Edinburgh
Great product that solved our condensation issues. Delivery was quick and installation super easy. Would definitely recommend
Simon Iszo
Bristol
I was sceptical about this product, but I was proven wrong. They have transformed our windows, and we have eliminated all of our condensation. They were super easy to fit and delivery was superfast.
FAQs
Find answers to common questions about Air-Box installation, usage and benefits.
This is such a serious issue that various quality standards like PAS2030: 2019 (the current standard which applies to retrofit of insulation) and Building Regulations Approved Document Part F (the document which controls the issue of ventilation within the building envelope) state that ventilation must achieve 2,500mm2 in every room with a property which has received any form of air-tightness measure.
Not doing so is a breach of the standards and increases the risk of fungal build up which is not only un-healthy but which can also start to erode the interior décor as a consequence.
This form of ventilation, whilst acceptable, increases the ‘draught’ effect which you’d expect from putting holes in the window. It also increases the noise effect. The Airbox ventilation vent achieves the ventilation effect whilst having the ability to work with the window to decrease draughtiness and noise.
Some windows have a secure ability to leave the windows partially open which achieves the desired effect of creating a decent level of ventilation. In warmer months this is useful. However, many windows don’t have this functionality which is where the Airbox comes into its own. The window can provide a steady stream of airflow without compromising on safety or security.
EU regulations recommend airing the room up to 4 times a day for 15-30 minutes, which is often impossible or extremely inconvenient. In rooms with gas stoves, the absence of oxygen is especially dangerous, since this increases the likelihood of build up of dangerous gases. Whether you choose Airbox or not, if the property is becoming more air-tight we strongly recommend ventilation of one form or another is installed.
With the heating on, no it shouldn’t get any colder. The unit has the ability to adjust the air supply so if it is very cold and you wish to decrease any perceived draught, simple close the in-built valve and any cold air entering the room will decrease.
Most air conditioners won’t provide you with fresh air. Their work is based on the fact that air is re-circulated through a filter and cooled or heated as part of that process. This won’t provide the necessary fresh air to make a room healthy. Simply contrast how you feel after a day in an air conditioned building compared with time spent outside in fresh air.
During normal operation the valve shouldn’t freeze because of the air being moved often from a warmer inside room to the outside. However, when it’s very cold we don’t recommend you leave the Airbox closed for long periods of time which will disrupt the air movement which ensures ice cannot build up.
There are cheaper trickle vents on the market. However all require drilling or routing which takes considerable time compared with literally minutes to install the Airbox. Couple that with the potential damage to windows from drilling etc and we believe that it’s safer than the cost of replacing expensive windows. We’ve also found that customers prefer the Airbox because it doesn’t do any damage to the windows.
PAS Safe Solutions have in-house highly qualified ventilation experts which include Retrofit Coordinators. Our experts say they are fully compliant if fitted as instructed.
The product has been tested by BRE to BS EN 13141-1 which is the only requirement provide the necessary fresh air to make a room healthy. Simply contrast how you feel after a day in an air conditioned building compared with time spent outside in fresh air.
Get your Air-Box® today
Experience better air quality, reduced condensation, and energy savings with our patented ventilation solution
Patented UK design
Free next-day UK delivery
Reduces condensation & mould
Easy 5-minute installation
Money back guarantee
Improves air quality
Was £22.00 (+VAT)
Now only £12.49 (+VAT)
Now with Free delivery saving £4.99
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