{"product_id":"warmflow-agentis-15-21kw-external-regular-oil-boiler-e21","title":"Warmflow Agentis 15-21kW External Regular Oil Boiler - E21","description":"\u003ch2\u003eWarmflow Agentis 15-21kW External Regular Oil Boiler - E21\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWarmflow Agentis 15-21kW External Regular Oil Boiler - E21\u003c\/strong\u003e is a compact, efficient floor-standing oil boiler designed for outdoor installation where internal boiler space is limited.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eAgentis E21\u003c\/strong\u003e is part of Warmflow’s External Heat Only oil boiler range and is designed to provide reliable central heating performance for domestic oil heating systems. With an output range of \u003cstrong\u003e15-21kW\u003c\/strong\u003e, this model is suitable for many smaller to medium-sized properties, subject to a correct heat loss calculation and heating system design.\u003c\/p\u003e\n\u003cp\u003eThis external regular oil boiler features Warmflow’s patented 5mm stainless steel heat exchanger technology, Riello low NOx burner technology, IP45-rated weatherproof casing, front service access and multi-directional flue options included as standard.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWarmflow Agentis external oil boiler\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eE21\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput range: \u003cstrong\u003e15-21kW\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEAN \/ GTIN: \u003cstrong\u003e5055888501601\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct type: Heat only \/ regular oil boiler\u003c\/li\u003e\n\u003cli\u003eDesigned for outdoor installation\u003c\/li\u003e\n\u003cli\u003eFloor-standing oil-fired condensing boiler\u003c\/li\u003e\n\u003cli\u003ePatented 5mm stainless steel heat exchanger technology\u003c\/li\u003e\n\u003cli\u003eRiello low NOx burner technology\u003c\/li\u003e\n\u003cli\u003eNo-maintenance IP45-rated weatherproof casing\u003c\/li\u003e\n\u003cli\u003eAnthracite grey external casing\u003c\/li\u003e\n\u003cli\u003eMulti-directional flue included as standard\u003c\/li\u003e\n\u003cli\u003eLeft, right or rear flue options with optional top flue\u003c\/li\u003e\n\u003cli\u003eFront service access for maintenance\u003c\/li\u003e\n\u003cli\u003eQuiet operation\u003c\/li\u003e\n\u003cli\u003eHVO ready\u003c\/li\u003e\n\u003cli\u003eErP A-rated heating performance\u003c\/li\u003e\n\u003cli\u003eDesigned for professional oil boiler installation, servicing and replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBoiler Specification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Warmflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e Agentis External Heat Only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e E21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Oil Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Type:\u003c\/strong\u003e Heat Only \/ Regular Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e E21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN \/ GTIN:\u003c\/strong\u003e 5055888501601\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Oil \/ Kerosene \/ Heating Oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e External floor-standing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Outdoor oil boiler installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Range:\u003c\/strong\u003e 15-21kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output:\u003c\/strong\u003e 21kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Category:\u003c\/strong\u003e Condensing oil boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErP Heating Rating:\u003c\/strong\u003e A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAP Winter Seasonal Efficiency:\u003c\/strong\u003e 88.7%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAP Summer Seasonal Efficiency:\u003c\/strong\u003e 80.9%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeasonal Efficiency for Non-Domestic Buildings:\u003c\/strong\u003e 95.4%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComparative Hot Water Efficiency:\u003c\/strong\u003e 59.1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlue Options:\u003c\/strong\u003e Left, right or rear flue options with optional top flue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlue Included:\u003c\/strong\u003e Multi-directional flue included as standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Connection:\u003c\/strong\u003e 28mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn Connection:\u003c\/strong\u003e 1\" BSP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Access:\u003c\/strong\u003e Front\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner:\u003c\/strong\u003e Riello low NOx burner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e Patented 5mm stainless steel heat exchanger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasing:\u003c\/strong\u003e No-maintenance IP45-rated weatherproof casing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDHW Flow Rate:\u003c\/strong\u003e Not applicable - this is not a combi boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Position:\u003c\/strong\u003e Floor mounted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure Rating:\u003c\/strong\u003e Outdoor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Anthracite Grey \/ Grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 900mm H x 413mm W x 700mm D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 900mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 413mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 700mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprox. Weight:\u003c\/strong\u003e 128kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \/ Guarantee:\u003c\/strong\u003e 5 years, subject to Warmflow terms, registration and service requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor oil boiler installations\u003c\/li\u003e\n\u003cli\u003eReplacement regular oil boiler installations\u003c\/li\u003e\n\u003cli\u003eHomes where internal boiler space is limited\u003c\/li\u003e\n\u003cli\u003eDomestic central heating systems using oil \/ kerosene\u003c\/li\u003e\n\u003cli\u003eHomes requiring a heat only oil boiler with separate hot water cylinder\u003c\/li\u003e\n\u003cli\u003eSmaller to medium-sized properties requiring a 15-21kW oil boiler output range\u003c\/li\u003e\n\u003cli\u003eProperties requiring a compact external floor-standing oil boiler\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExternal design helps save indoor space\u003c\/li\u003e\n\u003cli\u003eIP45-rated casing is designed for outdoor installation\u003c\/li\u003e\n\u003cli\u003eMulti-directional flue included as standard for flexible installation\u003c\/li\u003e\n\u003cli\u003eLeft, right or rear flue options with optional top flue\u003c\/li\u003e\n\u003cli\u003eFront service access supports easier maintenance\u003c\/li\u003e\n\u003cli\u003eRiello burner technology provides proven oil burner performance\u003c\/li\u003e\n\u003cli\u003ePatented stainless steel heat exchanger supports efficient long-term operation\u003c\/li\u003e\n\u003cli\u003eHVO-ready design helps support future fuel flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Product Note\u003c\/h3\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003eWarmflow Agentis 15-21kW External Regular Oil Boiler - E21\u003c\/strong\u003e. This is a \u003cstrong\u003eheat only \/ regular oil boiler\u003c\/strong\u003e and is not a combination boiler. A separate hot water cylinder and suitable system components are required where domestic hot water is needed.\u003c\/p\u003e\n\u003cp\u003eOil line components, fire valves, oil filters, controls, pipework, fittings, system protection, commissioning materials and installation accessories are not included unless stated separately.\u003c\/p\u003e\n\u003cp\u003eAlways confirm the required flue arrangement, oil supply setup, condensate route and heating system design before installation. Boiler sizing should be confirmed by a qualified heating engineer based on the property heat loss and system requirements.\u003c\/p\u003e\n\u003ch3\u003eProfessional Installation Required\u003c\/h3\u003e\n\u003cp\u003eThis oil-fired boiler must be installed, commissioned and serviced by a suitably qualified oil heating engineer. Installation should be carried out by a competent professional, such as an \u003cstrong\u003eOFTEC registered technician\u003c\/strong\u003e, in accordance with current regulations, Warmflow installation instructions and safe working practices.\u003c\/p\u003e","brand":"Warmflow","offers":[{"title":"Default Title","offer_id":49127841333504,"sku":"WARMFLOW-E21","price":1800.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/2814\/files\/w_643_2.avif?v=1786017305","url":"https:\/\/spares-direct.com\/products\/warmflow-agentis-15-21kw-external-regular-oil-boiler-e21","provider":"Spares Direct","version":"1.0","type":"link"}