Get greater thermal performance

Your windows and doors are a complete system with each component contributing to the overall performance and comfort of your home. For the ultimate in thermal performance, the whole window system needs to work together and deliver thermal efficiency. The comprehensive ThermalHeart+® system offers a thermally efficient solution for each component: the frames, the glass, the installation method.

Combining our ThermalHEART® frames with The AGP System™ glass has a remarkable impact on thermal performance - almost doubling the performance of standard aluminium joinery, creating warmer, drier and healthier homes. With the innovative Centrafix™ installation method, thermal performance is further increased by over 20%2

For an alternative thermally efficient option, consider uPVC Klima Series® windows and doors which achieve a maximum six-star energy rating under the WEERS system.

Centrafix™ installation

Additional 21.6% thermal performance improvement2

ThermalHEART® frames + The AGP System™

94.7% thermal performance improvement of standard aluminium joinery1

Standard aluminium windows and doors

+21.6% +94.7%