{"product_id":"vaillant-ecotec-plus-840-combi-boiler","title":"Vaillant ecoTEC Plus 840 Combi Boiler","description":"\u003ch3\u003eVaillant ecoTEC Plus 840 Combi Boiler\u003c\/h3\u003e\n\nThe Vaillant ecoTEC Plus 840 Combi Boiler is a powerful, high-output heating and hot water solution, designed for larger homes with greater demand. As part of Vaillant’s latest ecoTEC Plus range, it combines advanced performance with a refined internal layout, giving installers easy access to all major components and making installation and servicing quicker and more efficient.\n\nThis upgraded model features a modern semi-touch interface, offering a smooth and intuitive experience from the moment it’s installed. The guided commissioning wizard helps installers complete setup step-by-step, while the clear display and simple navigation make it easy for homeowners to manage their heating and hot water. With its familiar footprint, pipe connections, and flue positioning, it’s also ideal for straightforward replacement of older Vaillant boilers.\n\nPerformance is enhanced through cutting-edge technology. IoniDETECT continuously monitors gas combustion, allowing the boiler to operate across a wide modulation range of up to 1:10. This means it can adapt precisely to heating demand, improving efficiency and helping to reduce energy consumption. linBUS technology further improves system accuracy by monitoring flow rate and pressure through the internal pump.\n\nDesigned for flexibility and future-proofing, the ecoTEC Plus 840 is hydrogen-ready, meaning it can safely operate with up to a 20% hydrogen blend. It is also compatible with Vaillant’s full range of controls, flues, boiler protection kits, and renewable technologies, making it suitable for a wide variety of installations. In addition, it is smart home ready and can be connected to the myVAILLANT connect internet gateway for app-based control and remote access (additional equipment may be required).\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\nRefined internal layout for easier installation and servicing\n\nIntuitive semi-touch interface with guided commissioning wizard\n\nIoniDETECT technology for intelligent combustion monitoring\n\nWide modulation range (up to 1:10) for improved efficiency\n\nlinBUS technology for enhanced system accuracy and performance\n\nHydrogen-ready for up to 20% hydrogen blend\n\nSmart home ready with myVAILLANT connect (additional equipment required)\n\nCompatible with Vaillant controls, flues, and accessories\n\nFamiliar footprint for easy replacement installations\n\nUp to 10-year warranty available with Vaillant Advance Installer\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\nProduct Type: Gas Combi Boiler\n\nModel: ecoTEC Plus 840\n\nGTIN: 4024074906767\n\nHeight: 720 mm\n\nWidth: 440 mm\n\nDepth: 386 mm\n\nWeight (Net): 40.5 kg\n\nGross Weight: 43.5 kg\n\nWarranty: 5 years (extendable to 10 years with Vaillant Advance Installer)\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eIs the ecoTEC Plus 840 suitable for large households?\u003c\/h4\u003e\n\nYes, this is one of the higher output combi boilers in the range, making it ideal for larger homes with higher heating and hot water demands.\n\n\u003ch4\u003eCan this boiler be controlled remotely?\u003c\/h4\u003e\n\nYes, it is smart home ready and can be connected to the myVAILLANT connect gateway, allowing app-based control when used with compatible systems.\n\n\u003ch4\u003eWhat makes this boiler future-proof?\u003c\/h4\u003e\n\nIt is hydrogen-ready and designed to work safely with up to a 20% hydrogen blend, helping prepare your home for future energy standards while maintaining high efficiency.","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":52979127746902,"sku":"148490","price":1886.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/vaillant-ecotec-plus-840-combi-boiler-4279974.jpg?v=1775036132","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/vaillant-ecotec-plus-840-combi-boiler","provider":"JJ Building Materials","version":"1.0","type":"link"}