{"product_id":"alde-compact-4000-d-diesel-amp-water-heater","title":"Alde Compact 4000 D Diesel Boiler \u0026 Water Heater","description":"\u003cstyle\u003e\n  .alde-wrap { max-width: 900px; margin: 0 auto; font-family: inherit; }\n  .alde-cards { display: flex; gap: 16px; flex-wrap: wrap; margin: 1.25rem 0; }\n  .alde-card { flex: 1; min-width: 260px; border-radius: 12px; padding: 1.5rem; background: #f8f8f8; border: 1px solid #e2e2e2; }\n  .alde-card--plus { background: #f2f8ec; border-top: 4px solid #60a61b; }\n  .alde-card--std { border-top: 4px solid #0f697c; }\n  .alde-card h3 { margin: 0 0 12px; font-size: 20px; color: #052830; }\n  .alde-card ul { margin: 0; padding-left: 18px; }\n  .alde-card li { margin-bottom: 8px; font-size: 15px; line-height: 1.5; color: #333; }\n  .alde-spec-table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 15px; }\n  .alde-spec-table td { padding: 10px 14px; border-bottom: 1px solid #e6e6e6; }\n  .alde-spec-table td:first-child { font-weight: 600; color: #052830; width: 45%; }\n  .alde-spec-table tr:nth-child(even) { background: #f8f8f8; }\n  .alde-warning { margin: 2rem 0; background: #fdeceb; border: 2px solid #d9362a; border-radius: 10px; padding: 1.25rem 1.5rem; }\n  .alde-warning__title { display: flex; align-items: center; gap: 8px; font-size: 17px; font-weight: 700; color: #a4241a; margin-bottom: 8px; }\n  .alde-warning p { margin: 0; font-size: 15px; line-height: 1.55; color: #6b201a; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"alde-wrap\"\u003e\n\n\u003ch2\u003eAlde Compact 4000 D — Diesel Boiler \u0026amp; Water Heater\u003c\/h2\u003e\n\u003cp\u003eThe Alde Compact 4000 D brings together diesel-powered central heating and hot water in one compact unit, built for anyone who wants to run their heating straight from the vehicle's own diesel tank rather than relying on gas bottles. Available as the standard model or the upgraded Plus version, both combine a stepless diesel burner with mains electric heating elements, giving you up to 9kW of combined output whenever you need it.\u003c\/p\u003e\n\u003cp\u003eHeat is distributed the Alde way — through pipes, convectors and heating accessories routed around the vehicle, so warmth rises gently through air gaps rather than blasting out from a single vent. It's a genuinely modular system too, suited to campervans, overlanders, sports homes, and luxury horseboxes alike.\u003c\/p\u003e\n\n\u003ch2\u003eStandard or Plus — what actually changes?\u003c\/h2\u003e\n\u003cp\u003eThe core heating performance is identical between the two — same diesel burner, same fuel consumption, same 9kW combined output. Here's what genuinely sets them apart:\u003c\/p\u003e\n\n\u003cdiv class=\"alde-cards\"\u003e\n  \u003cdiv class=\"alde-card alde-card--std\"\u003e\n    \u003ch3\u003eStandard\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e10L hot water tank, standard delivery\u003c\/li\u003e\n      \u003cli\u003eElectric power steps: 1200W \/ 2100W \/ 3300W\u003c\/li\u003e\n      \u003cli\u003e305 x 420 x 500mm, 14kg\u003c\/li\u003e\n      \u003cli\u003eSuitable for UK inland waterway installations\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"alde-card alde-card--plus\"\u003e\n    \u003ch3\u003ePlus\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eContinuous\u003c\/strong\u003e hot water from the same 10L tank — less likely to run cold mid-shower during heavy use\u003c\/li\u003e\n      \u003cli\u003eElectric power steps: 1050W \/ 2100W \/ 3150W — a gentler first step, useful on lower-amperage hook-ups\u003c\/li\u003e\n      \u003cli\u003e310 x 420 x 500mm, 15kg\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eEverything else — diesel output, fuel consumption, tank volumes, pressures, and dual-zone heating — is exactly the same on both models. If continuous hot water isn't a priority for you, the standard model gives you the same core heating performance for less money and less weight.\u003c\/p\u003e\n\n\u003ch2\u003eFull specification (applies to both models)\u003c\/h2\u003e\n\u003ctable class=\"alde-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombined output\u003c\/td\u003e\n\u003ctd\u003eUp to 9kW (1–6kW diesel + 1–3kW electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiesel power\u003c\/td\u003e\n\u003ctd\u003e1–6kW, stepless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiesel consumption\u003c\/td\u003e\n\u003ctd\u003e0.1 to 0.6 L\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel compatibility\u003c\/td\u003e\n\u003ctd\u003eEN590 diesel \u0026amp; HVO100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectric supply\u003c\/td\u003e\n\u003ctd\u003e230–240V AC, 50Hz, 16A fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHot water tank\u003c\/td\u003e\n\u003ctd\u003e10 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlycol tank volume\u003c\/td\u003e\n\u003ctd\u003e3.5 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. pressure, glycol circuit\u003c\/td\u003e\n\u003ctd\u003e0.05 MPa (0.5 bar, open system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. pressure, water circuit\u003c\/td\u003e\n\u003ctd\u003e0.3 MPa (3.0 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. system temperature\u003c\/td\u003e\n\u003ctd\u003e90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V power consumption\u003c\/td\u003e\n\u003ctd\u003eMax. 20A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V fuse\u003c\/td\u003e\n\u003ctd\u003e2 x 15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDual-zone heating\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns on your vehicle's own diesel tank\u003c\/strong\u003e — no separate gas bottles to carry, refill or swap out, and compatible with both standard EN590 diesel and HVO100 for a lower-carbon option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepless diesel burner\u003c\/strong\u003e — output adjusts smoothly across the 1–6kW range rather than jumping between fixed settings, so you get exactly the heat you need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating and hot water in one unit\u003c\/strong\u003e — a 10-litre tank supplies hot water for washing and showering alongside central heating, with the Plus model offering continuous delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-zone heating\u003c\/strong\u003e — set and control temperatures in two separate areas of the vehicle independently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, convection-based heating\u003c\/strong\u003e — Alde's smart ICT technology senses conditions and distributes warmth evenly through pipes and convectors, without noise or temperature swings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser-friendly control panel\u003c\/strong\u003e — a simple, modern interface for day-to-day operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuinely versatile\u003c\/strong\u003e — suited to campervans, overlanders, sports homes, luxury horseboxes, and (on the standard model) canal boats and other UK inland waterway vessels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"alde-warning\"\u003e\n  \u003cdiv class=\"alde-warning__title\"\u003e⚠️ Professional installation required\u003c\/div\u003e\n  \u003cp\u003eThis is a diesel-fired heating and hot water system involving fuel lines, combustion, and mains electrical connections. Incorrect installation can create a serious fire, carbon monoxide, or electrical safety risk. This unit must only be installed, commissioned, and serviced by a qualified, competent installer or a manufacturer-approved service centre, in line with Alde's official installation and safety documentation. Do not attempt to install or modify this system yourself.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eChoose your model above — Standard or Plus — to add the right unit to your basket.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Alde","offers":[{"title":"Standard","offer_id":58726842532214,"sku":"40009051","price":2699.0,"currency_code":"GBP","in_stock":true},{"title":"Plus","offer_id":58726846693750,"sku":"40009191","price":3249.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/8763\/7043\/files\/alde-4000d-plus-1500px.png?v=1789477817","url":"https:\/\/www.onyxoutdoors.co.uk\/products\/alde-compact-4000-d-diesel-amp-water-heater","provider":"Onyx Outdoors","version":"1.0","type":"link"}