No matter in which climate KOEMMERLING windows and doors are installed, they contribute to a cosy and comfortable atmosphere in your home. As the design of the KOEMMERLING system prevents thermal bridging, the thermal insulating performance of the finished window is exceptionally good. The glazing is also of utmost importance for good thermal values, and contributes to a substantial energy saving. Window and door systems from KOEMMERLING eliminate the problem of water condensation on the window panes inside the house. In official tests, KOEMMERLING window profiles easily passed the tests for frame materials with the highest thermal insulation according to EN ISO 10077.