![Woman looking out of window at nightfall.](/sites/default/files/public/styles/page_header_medium/public/2025-05/reynaers_linkeroever2-min.jpg?h=298ea7f7&itok=hocSCFrs) # Energy Efficiency Summers are getting hotter; winters are getting colder. This affects a building’s energy consumption, both in terms of heating and cooling. In fact, still 70% of a building’s carbon footprint comes from Operational Carbon emissions – energy consumed to heat and cool down buildings while in use. Highly insulated windows, doors and façades play a huge role in ensuring a project’s energy efficiency during its operational lifetime. ![ Private house with glass façade, lots of lights by night.](/sites/default/files/public/styles/cta_block_left/public/2025-05/reynaers-passive-resized-8MP.jpg?h=032615d4&itok=wkklMZzc) Certified solutions for ultimate thermal insulation levels ## Passive House The Passive House certificate is a German energy standard that indicates whether a building element creates excellent comfort conditions all year long. At Reynaers Aluminium, we offer various solutions that are Passive House Component Certified. [ Read more ](/inspiration/stories/power-our-passive-house-certified-products "Read more ") ![Modern villa with lots of glass, looking out over Californian mountains at nightfall.](/sites/default/files/public/styles/cta_block_right/public/2025-05/reynaers-brickstack-resized-8MP.jpg?h=ac4d95b5&itok=HcocNjz0) Certified solutions for ultimate thermal insulation levels ![Abstract private home in sunny garden.](/sites/default/files/public/styles/cta_block_left/public/2025-05/reynaers-flexhouse-resized-8MP.jpg?h=952c4482&itok=6q7dGZly) Swiss quality label indicating exceptional energy efficiency ## Minergie Il certificato di componente Minergie viene assegnato ai sistemi che contribuiscono a migliorare il comfort abitativo e lavorativo degli edifici. Reynaers Aluminium offre diverse soluzioni di serramenti che soddisfano i rigorosi standard previsti dalla certificazione Minergie per i componenti. [ Read more ](/node/14581 "Read more ") ![Concrete modern villa in wooded area.](/sites/default/files/public/styles/cta_block_right/public/2025-05/reynaers-giving-tree-resized-8MP.jpg?h=e6fedfd8&itok=u4aIASrN) Swiss quality label indicating exceptional energy efficiency *Download the brochure* ## Get informed ![Cover image Low Energy Brochure.](/sites/default/files/public/styles/tabbed_block/public/2025-05/reynaers-alumnium-low-energy-solutions-download.png?h=b2f2376d&itok=LjvJ7kKj) ### Our low-energy solutions In this guide, we illustrate the importance of energy efficiency and give you an overview of our compatible solutions for low-energy building projects. [ Download the brochure ](https://issuu.com/reynaersaluminium/docs/our-low-energy-solutions-brochure-uk "Download the brochure") ## You might also like ### A selection of our low-energy solutions ![MasterLine 8](/sites/default/files/public/styles/teaser_medium/public/inriver/images/59226_Luciestraat%20Maasmechelen-7943-1019.jpg?h=56d0ca2e&itok=1SOsljid) ### MasterLine 8 Read more [](/products/windows/masterline-8) Crafted for masters - Our flagship product, with a wide field of applicability - Excellent thermal and AWW performances - Highly competitive price-quality ratio ![MasterPatio](/sites/default/files/public/styles/teaser_medium/public/inriver/images/120281_20220615_ReynaersAluminium_ProjectZandhoven_059.jpg?h=56d0ca2e&itok=xIrsOJLL) ### MasterPatio Read more [](/products/sliding-folding/masterpatio) Crafted by Masters - Standard high-insulating system with high-rise ready performances - Sustainable through recycled materials and reduced waste during production - Compatible with our MasterLine 8 system, converting it into an easy to produce floor-to-ceiling facade ## Discover other sustainable dimensions - ![Woman drinking coffee behind glass window on a rainy day.](/sites/default/files/public/styles/teaser_small/public/2022-06/Reynaers-Aluminium-water-tightness-1.jpg?h=8c1344d8&itok=jDlpLXoV) Extreme Weather Resilience [ Extreme Weather Resilience ](/sustainability-from-every-angle/extreme-weather-resilience "Extreme Weather Resilience ") - ![Man with glasses looking closely to aluminium corner sample.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-eco-design-1.jpg?h=f0ab467d&itok=XYus9O9g) Eco Design [ Eco Design ](/sustainability-from-every-angle/eco-design "Eco Design") - ![Orange high-rise building looked from below.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-recyclable-1_0.jpg?h=f0ab467d&itok=1NGbcSvL) Durable, Recyclable & Low-Carbon Materials [ Durable, Recyclable & Low-Carbon Materials ](/sustainability-from-every-angle/durable-recyclable-low-carbon-materials "Durable, Recyclable & Low-Carbon Materials ") - ![Modular building panel lifted next to skyscraper.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-modularity-1%20%281%29.jpg?h=a51a5cf9&itok=GehWY9uJ) Modularity & Ease of Disassembly [ Modularity & Ease of Disassembly ](/sustainability-from-every-angle/modularity-disassembly "Modularity & Ease of Disassembly ") - ![Top view man and woman sitting at table drinking coffee.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-certified-data-1_0.jpg?h=f0ab467d&itok=5-ijmyqM) Certified & Traceable Information [ Certified & Traceable Information ](/sustainability-from-every-angle/certified-traceable-information "Certified & Traceable Information ") - ![ Modern concrete villa in forest](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-resized-8MP.jpg?h=09198c8e&itok=4gOiPRxa) EU Green Deal compliance [ EU Green Deal compliance ](/sustainability-from-every-angle/eu-green-deal-compliance "EU Green Deal compliance") ## Sustainability starts with asking the right questions. 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