![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 The Minergie component certificate is awarded to systems that enhance the living and working comfort of buildings. Reynaers Aluminium offers various joinery solutions that meet the strict Minergie component standards. [ Read more ](/inspiration/stories/minergie-label-guarantees-certified-comfort "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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