{"product_id":"vaillant-unistor-250-unvented-hot-water-cylinder","title":"Vaillant uniSTOR 250 Unvented Hot Water Cylinder","description":"\u003ch3\u003eVaillant uniSTOR 250 Unvented Hot Water Cylinder\u003c\/h3\u003e\n\nThe Vaillant uniSTOR 250 Unvented Hot Water Cylinder is a high-capacity hot water storage solution designed for sealed heating systems. It is an ideal choice for homeowners upgrading from a traditional open vented system with a cold water tank in the loft to a modern sealed system with a boiler and unvented cylinder. By removing the need for a loft tank, this upgrade helps free up space while also improving water pressure throughout the property.\n\nWith a large 250 litre capacity, this cylinder is particularly well suited for larger homes or properties with multiple bathrooms and high hot water demand. The cylinder is manufactured from high-grade duplex stainless steel, offering excellent durability, corrosion resistance, and long service life.\n\nThe uniSTOR cylinder is highly insulated using environmentally friendly materials to reduce heat loss and improve heating system efficiency. This helps lower energy consumption and can reduce fuel bills over time. The cylinder also features a modern outer casing that is easy to clean and designed to fit neatly into airing cupboards or plant rooms.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n250 Litre Capacity\n\nSuitable for Sealed Heating Systems\n\nIdeal for Converting from Open Vented Systems\n\nHigh Grade Duplex Stainless Steel Cylinder\n\nHighly Insulated to Reduce Heat Loss\n\nEnvironmentally Friendly Insulation Materials\n\nModern, Easy-to-Clean Outer Casing\n\n2 Year Parts and Labour Guarantee\n\n25 Year Cylinder Warranty\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\nProduct: Vaillant uniSTOR 250 Unvented Hot Water Cylinder\n\nGTIN: 4024074788998\n\nProduct Type: Indirect Unvented Cylinder\n\nModel: Standard\n\nGross Weight (Including Packaging): 65.1kg\n\nNet Weight: 58.4kg\n\nHeight: 1535mm\n\nWidth: 595mm\n\nCapacity: 250 Litres\n\nWarranty: 25 Years (Subject to Manufacturer’s Terms \u0026amp; Conditions)\n\n\u003ch3\u003eWhy Choose an Unvented Cylinder?\u003c\/h3\u003e\n\nUnvented hot water cylinders deliver hot water at mains pressure, providing stronger showers and better flow rates from taps compared to traditional vented systems. They also remove the need for a cold water tank in the loft, freeing up space and simplifying the heating system. Modern cylinders like the Vaillant uniSTOR range are highly insulated to reduce heat loss and improve overall energy efficiency.\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003ch4\u003eWhat size house is a 250L hot water cylinder suitable for?\u003c\/h4\u003e\n\nA 250 litre cylinder is typically suitable for larger homes with multiple bathrooms and higher hot water usage.\n\n\u003ch4\u003eWhat is an unvented cylinder?\u003c\/h4\u003e\n\nAn unvented cylinder stores hot water at mains pressure, providing better water flow and removing the need for a cold water tank in the loft.\n\n\u003ch4\u003eHow long is the warranty on a Vaillant uniSTOR cylinder?\u003c\/h4\u003e\n\nVaillant uniSTOR cylinders come with a 25 year cylinder warranty and a 2 year parts and labour guarantee, subject to manufacturer’s terms and conditions.","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":52979137741142,"sku":"147858","price":1182.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/vaillant-unistor-250-unvented-hot-water-cylinder-4061477.jpg?v=1775036072","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/vaillant-unistor-250-unvented-hot-water-cylinder","provider":"JJ Building Materials","version":"1.0","type":"link"}