Row of houses with white doors and white thermal efficient Profix windows

The emphasis often shifts in the window industry from security to energy efficiency and back again depending on the latest product innovations or legislation. Regardless of trend, the ideal window should offer both. Pro-Therm PVC-U windows from Profix don’t follow fashion in this sense – high thermal efficiency ratings and Secured by Design accreditation, available in a range of styles, means they’re a great choice for any new build or replacement window project, clearly meeting objectives of many social housing providers.


Pro-Therm windows carry the BS EN ISO 14001 Environmental standard, meaning they meet environmental regulations and improve efficiency and environmental performance.

Furthermore, the Green Guide To Specification rates Pro-Therm windows as A+ thanks to their manufacture using the best and most efficient components on the market: lead-free, highly recyclable compounds for their multi-chambered PVCu profiles; leading warm edge technology with Super Spacer (which also reduces condensation by up to 70%); Argon gas filled glass units; and advanced coated glass that reflects heat back into the room but retains heat from solar gain (reducing heat loss by 20%). These together mean that when an A rated Pro-Therm window is installed in an average domestic building, savings of up to £250 per year on energy bills can be achieved, with an annual reduction in CO2 emissions of around 1.7 tonnes.

Safe as well

As well as these impressive green credentials, our Secured By Design status means Pro-Therm windows are tested to the highest security standards for Document Q and PAS 24 requirements. They carry product kitemarks and the hardware and fixings have successfully undergone salt spray testing and perform in excess of BS EN 1670 Grade 5.

Pro-Therm windows are low maintenance: they will never rot, rust or flake. Their life cycle expectancy is supported by a 15-year profile and components warranty and 20-year sealed unit warranty.

PVC-U windows offer versatility, value for money and durability. Whether it’s casement, vertical sliding, pivot, fully reversible, or tilt and turn PVCu windows you need, the Pro-Therm window is the perfect choice. For more information on the Pro-Therm credentials visit our Pro-Therm page or call the Profix team today on 01827 63351.