{"product_id":"vailant-unistor-indirect-250","title":"Vaillant Unistor Indirect 250","description":"\u003ch3\u003eOverview\u003c\/h3\u003e The **Vaillant uniSTOR 250L Unvented Indirect Cylinder** is a premium stainless steel hot water storage solution designed for larger domestic properties. Perfect for sealed heating systems or open vent boilers, this high-capacity cylinder provides reliable and efficient hot water for homes with multiple bathrooms or high hot water demands.\n\u003ch3\u003eCapacity and Performance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e**Generous 250-litre capacity** – ideal for larger households\u003c\/li\u003e \u003cli\u003e**Low standby losses** – only 1.4 kWh\/24h, helping reduce energy consumption and running costs\u003c\/li\u003e \u003cli\u003e**Energy-efficient design** – rated Class B against L-profile, ensuring optimal efficiency for your home\u003c\/li\u003e \u003cli\u003e**Unvented design** – delivers high water pressure for improved flow at taps and showers\u003c\/li\u003e \u003c\/ul\u003e\n\u003ch3\u003eDimensions and Installation\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e**Compact footprint for its capacity** – W x H x D: 595 x 1535 x 595 mm\u003c\/li\u003e \u003cli\u003e**Lightweight yet robust** – empty weight 61 kg, full weight 301 kg\u003c\/li\u003e \u003cli\u003e**Flexible installation options** – suitable for retrofitting onto existing heating systems or as part of a new build\u003c\/li\u003e \u003c\/ul\u003e\n\u003ch3\u003eDurability and Peace of Mind\u003c\/h3\u003e The uniSTOR cylinder is made from **high-quality stainless steel**, ensuring long-lasting performance and resistance to corrosion. Its robust design makes it suitable for demanding household conditions while maintaining efficiency over many years.\n\u003ch3\u003eWhy Choose Vaillant uniSTOR 250?\u003c\/h3\u003e The uniSTOR 250L is perfect for homeowners upgrading from older vented cylinders or expanding their hot water storage. Its **high-capacity, low-loss design** delivers reliable hot water, reduces energy costs, and provides a strong, consistent flow for multiple outlets.\n\u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003eQ: What is the capacity of the Vaillant uniSTOR 250?\u003c\/h4\u003e The cylinder holds **250 litres of hot water**, making it ideal for larger homes with multiple bathrooms. \u003ch4\u003eQ: How energy-efficient is the uniSTOR 250?\u003c\/h4\u003e It has **low standby losses of 1.4 kWh\/24h** and is **rated Class B** against L-profile for energy efficiency. \u003ch4\u003eQ: Can it be installed on existing heating systems?\u003c\/h4\u003e Yes, the uniSTOR 250 is **retrofit-friendly** and can be installed on older sealed systems or as part of a new heating setup.\u003cbr\u003e\u003cp\u003eCheck out our full range of \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/plumbing-supplies\"\u003eplumbing supplies\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/boiler-accessories\"\u003eboiler accessories\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":51771451179350,"sku":"147858","price":1135.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/vaillant-unistor-indirect-250-5887164.jpg?v=1772639356","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/vailant-unistor-indirect-250","provider":"JJ Building Materials","version":"1.0","type":"link"}