{"product_id":"worcester-greenstar-25-si-erp-lpg-combi","title":"Worcester Greenstar 25 Si ErP LPG Combi","description":"\u003ch3\u003eWorcester Greenstar 25Si ErP LPG Combi Boiler\u003c\/h3\u003e\n\nThe Worcester Greenstar 25Si ErP LPG Combi Boiler is a compact and efficient heating solution, designed for small to medium-sized homes with one bathroom. Running on LPG (liquefied petroleum gas), it’s ideal for properties without access to mains gas while still providing Worcester Bosch’s renowned reliability and performance.\n\nThis model combines heating and hot water in one space-saving unit, making it perfect for homes with limited storage. With its 94% efficiency rating and ErP A-rated performance for both heating and hot water, the Greenstar 25Si delivers comfort and energy savings all year round.\n\n\u003ch3\u003eEfficient and Compact Design\u003c\/h3\u003e\n\nWith a central heating output of 24kW and a hot water output of 25kW, the Greenstar 25Si LPG Combi is powerful enough to heat homes with up to 10 radiators while providing a steady domestic hot water flow rate of 10.2 litres per minute.\n\nDespite this strong performance, its compact dimensions — just 690mm (H) x 390mm (W) x 280mm (D) — mean it fits neatly inside a standard kitchen cupboard, offering a discreet installation that saves valuable space.\n\n\u003ch3\u003eReliable and Easy to Use\u003c\/h3\u003e\n\nThe Greenstar 25Si LPG is built to Worcester Bosch’s exacting standards, ensuring long-term reliability and durability. It includes boiler frost protection to safeguard your system during cold weather, user-friendly controls for simple operation, and a low energy pump designed to reduce electricity consumption.\n\nWith a potential warranty of up to 10 years (subject to terms and conditions), this model offers excellent peace of mind for homeowners looking for both performance and longevity.\n\n\u003ch3\u003eEnvironmentally Friendly Efficiency\u003c\/h3\u003e\n\nThe Worcester Greenstar 25Si features condensing technology to maximise heat recovery from exhaust gases, ensuring minimal energy waste. Its ErP A-rating for heating and hot water guarantees top-tier efficiency, helping you reduce both fuel bills and carbon emissions — a smart choice for cost-conscious and eco-aware homeowners alike.\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\nFuel Type: LPG (Liquefied Petroleum Gas)\n\nEfficiency: 94% (A-rated ErP efficiency)\n\nHeating Output: 24 kW\n\nHot Water Output: 25 kW\n\nFlow Rate: 10.2 L\/min @ 35°C rise\n\nCompact dimensions: 690 x 390 x 280 mm\n\nWall-mounted design – ideal for smaller spaces\n\nBuilt-in frost protection for year-round reliability\n\nLow energy pump – reduces power consumption\n\nUser-friendly controls for simple operation\n\nCondensing technology for higher efficiency\n\nWarranty: Up to 10 years (subject to T\u0026amp;Cs)\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\nManufacturer: Worcester Bosch\n\nModel: Greenstar 25Si ErP LPG Combi\n\nBoiler Type: Combination (Combi)\n\nFuel Type: LPG\n\nCondensing: Yes\n\nCH Output: 24 kW\n\nDHW Output: 25 kW\n\nFlow Rate: 10.2L\/min @ 35°C rise\n\nEfficiency Rating: 94%\n\nErP Rating: A (Heating) \/ A (Hot Water)\n\nMounting: Wall-mounted\n\nDimensions (HxWxD): 690 x 390 x 280 mm\n\nStandard Warranty: Up to 10 years\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003e1. What type of property is the Worcester Greenstar 25Si LPG Combi best suited for?\u003c\/h4\u003e This boiler is ideal for **small to medium-sized homes** with **one bathroom** and up to **10 radiators**. It’s perfect for properties off the mains gas grid that still want efficient, on-demand heating and hot water. \u003ch4\u003e2. Can this boiler fit inside a kitchen cupboard?\u003c\/h4\u003e Yes! The Greenstar 25Si has **compact dimensions (690 x 390 x 280 mm)**, making it small enough to fit neatly within a **standard kitchen cupboard** — ideal for saving space. \u003ch4\u003e3. How efficient is the Worcester Greenstar 25Si LPG model?\u003c\/h4\u003e This model offers **94% efficiency** and is **A-rated for both heating and hot water** under the ErP directive, helping you reduce your **energy consumption** and **heating bills**.\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\/boilers\"\u003eboilers\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Worcester","offers":[{"title":"Default Title","offer_id":51771449016662,"sku":"162764","price":1294.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/worcester-greenstar-25-si-erp-lpg-combi-4322347.jpg?v=1772639470","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/worcester-greenstar-25-si-erp-lpg-combi","provider":"JJ Building Materials","version":"1.0","type":"link"}