{"title":"Chimney systems","description":"\u003cp\u003eInsulated ceramic chimney systems for solid fuel, gas and oil appliances. Sold by the linear metre, sized to the appliance output and the height of the house.\u003c\/p\u003e","products":[{"product_id":"leier-lsk-chimney-system","title":"LSK Chimney System - Leier","description":"\n\u003ch2\u003e\u003cstrong\u003eShort description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInsulated ceramic chimney system for solid fuel, in six flue diameters from 140 to 300 mm. Sold by the linear metre.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFull description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eLSK is the standard Leier chimney for a family house. Three parts make up each metre: a fireclay flue liner, a rock wool insulation board around it, and an outer concrete block that carries the load. The insulation keeps the flue gas warm, which is what keeps the draught working and the condensate out of the masonry.\u003c\/p\u003e\u003cp\u003eIt takes any solid fuel — wood, coal, pellets, mixed-burner boilers, fireplaces and stoves, whether factory-built or built on site. Where the outer blocks include a ventilation duct, the combustion air can be drawn from outside the building instead of from the room, which matters in a well-sealed house.\u003c\/p\u003e\u003cp\u003eThe flue diameter is not a matter of preference. It follows from the boiler output, the fuel and the useful height of the chimney — Leier publishes a sizing diagram for exactly this. Too wide a flue cools the gas and kills the draught; too narrow a one chokes the appliance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eInsulated: fireclay liner, rock wool board, load-bearing concrete outer block\u003c\/li\u003e\n  \u003cli\u003eSix diameters, from 140 to 300 mm\u003c\/li\u003e\n  \u003cli\u003eAny solid fuel — wood, coal, pellets, mixed burners, fireplaces, stoves\u003c\/li\u003e\n  \u003cli\u003eOuter blocks with a ventilation duct can supply combustion air from outside\u003c\/li\u003e\n  \u003cli\u003eResistant to high flue gas temperatures and to acid condensate\u003c\/li\u003e\n  \u003cli\u003eThree components per linear metre, dry and quick to build\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: insulated ceramic chimney system\u003c\/li\u003e\n  \u003cli\u003eBrand: Leier\u003c\/li\u003e\n  \u003cli\u003eRange: LSK\u003c\/li\u003e\n  \u003cli\u003eFlue diameters: 140, 160, 180, 200, 250 and 300 mm\u003c\/li\u003e\n  \u003cli\u003eOuter dimensions: 35 x 35 cm (140 \/ 160), 40 x 40 cm (180 \/ 200), 48 x 48 cm (250), 57 x 57 cm (300)\u003c\/li\u003e\n  \u003cli\u003eWeight: 118–229 kg per linear metre, depending on diameter\u003c\/li\u003e\n  \u003cli\u003eConsumption: 3 pieces per linear metre of each component\u003c\/li\u003e\n  \u003cli\u003eUse: solid fuel boilers, stoves and fireplaces\u003c\/li\u003e\n  \u003cli\u003eSold by: linear metre\u003c\/li\u003e\n  \u003cli\u003eDelivery: made to order, subject to supplier stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSize the flue from Leier's sizing diagram, using the boiler output and the useful height of the chimney — the vertical distance from the appliance connection to the top. The diagram covers a single wood boiler on one flue; connecting two appliances to the same flue needs a separate calculation. Order the full height in one go, including the part above the roof, and add the terminal set. A chimney is not a place to economise: the cost difference between two diameters is small next to the cost of rebuilding one that does not draw.\u003c\/p\u003e","brand":"Leier","offers":[{"title":"140 mm","offer_id":57161659548026,"sku":"HGM-CS-LIR-LSK-14","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"160 mm","offer_id":57161659580794,"sku":"HGM-CS-LIR-LSK-16","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"180 mm","offer_id":57161659613562,"sku":"HGM-CS-LIR-LSK-18","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 mm","offer_id":57161659646330,"sku":"HGM-CS-LIR-LSK-20","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"250 mm","offer_id":57161659679098,"sku":"HGM-CS-LIR-LSK-25","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"300 mm","offer_id":57161659711866,"sku":"HGM-CS-LIR-LSK-30","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/files\/Cos-de-fum-Leier-LSK.webp?v=1786606573"},{"product_id":"leier-smart-chimney-system","title":"SMART Chimney System - Leier","description":"\n\u003ch2\u003e\u003cstrong\u003eShort description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe most compact insulated chimney in the Leier range — about 0.1 m² of floor area at Ø160. For small houses and interior installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFull description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSMART is LSK stripped to what a wood stove actually needs. Same three-part build — fireclay liner, insulation, concrete outer block — but the outer block is as small as it can be: 32 x 32 cm at Ø160, against 35 x 35 for the equivalent LSK.\u003c\/p\u003e\u003cp\u003eThat difference sounds trivial on a drawing and is not, in a small house. A chimney runs through every floor, so a few centimetres on each side is floor area lost on every storey. At Ø160 the whole thing takes about 0.1 m² of the room.\u003c\/p\u003e\u003cp\u003eThe trade-off is scope. SMART is for solid fuel with higher flue gas temperatures — wood stoves, fireplaces, wood boilers. For gas, oil or a condensing boiler, the system is MULTIKERAM or MULTIKERAM LAS.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSmallest outer dimensions in the range — about 0.1 m² at Ø160\u003c\/li\u003e\n  \u003cli\u003eInsulated: fireclay liner, insulation board, concrete outer block\u003c\/li\u003e\n  \u003cli\u003eDesigned for interior installation in small houses\u003c\/li\u003e\n  \u003cli\u003eThree diameters: 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eResistant to high flue gas temperatures\u003c\/li\u003e\n  \u003cli\u003eThree components per linear metre, dry and quick to build\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: insulated ceramic chimney system\u003c\/li\u003e\n  \u003cli\u003eBrand: Leier\u003c\/li\u003e\n  \u003cli\u003eRange: SMART\u003c\/li\u003e\n  \u003cli\u003eFlue diameters: 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eOuter dimensions: 32 x 32 cm (160), 34 x 34 cm (180), 36 x 36 cm (200)\u003c\/li\u003e\n  \u003cli\u003eWeight: 88–99 kg per linear metre, depending on diameter\u003c\/li\u003e\n  \u003cli\u003eConsumption: 3 pieces per linear metre of each component\u003c\/li\u003e\n  \u003cli\u003eUse: wood stoves, fireplaces and wood boilers\u003c\/li\u003e\n  \u003cli\u003eSold by: linear metre\u003c\/li\u003e\n  \u003cli\u003eDelivery: made to order, subject to supplier stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSolid fuel only. If there is any chance of switching to gas or a condensing boiler later, the saving in floor area is not worth the rebuild — take MULTIKERAM instead. Size the flue from Leier's sizing diagram, using the appliance output and the useful height of the chimney. Order the full height in one go, including the section above the roof, and add the terminal set.\u003c\/p\u003e","brand":"Leier","offers":[{"title":"160 mm","offer_id":57161659777402,"sku":"HGM-CS-LIR-SMA-16","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"180 mm","offer_id":57161659810170,"sku":"HGM-CS-LIR-SMA-18","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 mm","offer_id":57161659842938,"sku":"HGM-CS-LIR-SMA-20","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/files\/LEIER-SMART.webp?v=1786606573"},{"product_id":"leier-multikeram-chimney-system","title":"MULTIKERAM Chimney System - Leier","description":"\n\u003ch2\u003e\u003cstrong\u003eShort description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eW3G certified ceramic chimney — resistant to soot fires and to moisture at the same time. Takes almost any fuel. Four diameters, 140 to 200 mm.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFull description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eW3G is the point of this system. Most chimneys are certified either for dry operation at high temperature or for wet operation at low temperature. MULTIKERAM is certified for both: it survives a soot fire and it tolerates the condensate that a modern low-temperature boiler produces.\u003c\/p\u003e\u003cp\u003eIn practice that means the fuel decision is not locked in by the chimney. Wood now, gas in five years, pellets after that — the flue stays. That flexibility is worth more than it looks, because replacing a chimney means opening every floor it passes through.\u003c\/p\u003e\u003cp\u003eIt covers gas and oil boilers (except sealed „turbo” types, which need MULTIKERAM LAS), pellet and wood boilers, mixed burners, fireplaces and stoves. Each metre is one fireclay liner, three insulation boards and three outer blocks.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eW3G certified: soot-fire resistant and moisture insensitive at once\u003c\/li\u003e\n  \u003cli\u003eThe fuel can be changed later without changing the chimney\u003c\/li\u003e\n  \u003cli\u003eGas, oil, pellets, wood, mixed burners, fireplaces and stoves\u003c\/li\u003e\n  \u003cli\u003eFour diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eOne-metre fireclay liners — fewer joints than a three-piece flue\u003c\/li\u003e\n  \u003cli\u003eInsulated, load-bearing concrete outer block\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: insulated ceramic chimney system\u003c\/li\u003e\n  \u003cli\u003eBrand: Leier\u003c\/li\u003e\n  \u003cli\u003eRange: MULTIKERAM\u003c\/li\u003e\n  \u003cli\u003eCertification: W3G\u003c\/li\u003e\n  \u003cli\u003eFlue diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eOuter dimensions: 35 x 35 cm (140 \/ 160), 40 x 40 cm (180 \/ 200)\u003c\/li\u003e\n  \u003cli\u003eWeight: 103–123 kg per linear metre, depending on diameter\u003c\/li\u003e\n  \u003cli\u003eConsumption per linear metre: 1 fireclay liner, 3 insulation boards, 3 outer blocks\u003c\/li\u003e\n  \u003cli\u003eUse: gas, oil, pellet, wood and mixed-fuel appliances — not sealed „turbo” boilers\u003c\/li\u003e\n  \u003cli\u003eSold by: linear metre\u003c\/li\u003e\n  \u003cli\u003eDelivery: made to order, subject to supplier stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSealed-combustion „turbo” and condensing boilers need a concentric air\/flue system — that is MULTIKERAM LAS, not this one. Everything else, MULTIKERAM handles. Size the flue from Leier's sizing diagram using the appliance output and the useful height. If the fuel is undecided, this is the system to build: the price gap against LSK is small next to the cost of replacing a chimney that turns out to be the wrong class.\u003c\/p\u003e","brand":"Leier","offers":[{"title":"140 mm","offer_id":57161659875706,"sku":"HGM-CS-LIR-MTK-14","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"160 mm","offer_id":57161659908474,"sku":"HGM-CS-LIR-MTK-16","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"180 mm","offer_id":57161659941242,"sku":"HGM-CS-LIR-MTK-18","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 mm","offer_id":57161659974010,"sku":"HGM-CS-LIR-MTK-20","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/files\/MULTIKERAM.webp?v=1786606574"},{"product_id":"leier-multikeram-las-chimney-system","title":"MULTIKERAM LAS Chimney System - Leier","description":"\n\u003ch2\u003e\u003cstrong\u003eShort description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe top of the Leier range. W3G hybrid system with a pre-insulated flue liner, the only one that takes condensing boilers. Four diameters, 140 to 200 mm.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFull description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eLAS stands for the combined air and flue gas system: the chimney carries the flue gas up and the combustion air down, so a sealed-combustion or condensing boiler draws its air from outside instead of from the room. In an airtight, well-insulated house that is not a refinement — it is the difference between a boiler that works and one that starves.\u003c\/p\u003e\u003cp\u003eThe build differs from MULTIKERAM: the fireclay liner arrives already insulated, positioned by a centring ring inside the outer block. Fewer components per metre, less to get wrong on site.\u003c\/p\u003e\u003cp\u003eLike MULTIKERAM it is W3G rated, so it handles both a soot fire and the condensate of a low-temperature system. Leier positions it for houses where the fuel is still undecided, and recommends it for nZEB — nearly zero-energy — buildings.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCombined air and flue gas system — combustion air from outside the room\u003c\/li\u003e\n  \u003cli\u003eThe only Leier system for condensing boilers\u003c\/li\u003e\n  \u003cli\u003eW3G certified: soot-fire resistant and moisture insensitive\u003c\/li\u003e\n  \u003cli\u003ePre-insulated fireclay liner with a centring ring — fewer parts per metre\u003c\/li\u003e\n  \u003cli\u003eRecommended for nZEB and airtight houses\u003c\/li\u003e\n  \u003cli\u003eFour diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: combined air and flue gas ceramic chimney system\u003c\/li\u003e\n  \u003cli\u003eBrand: Leier\u003c\/li\u003e\n  \u003cli\u003eRange: MULTIKERAM LAS\u003c\/li\u003e\n  \u003cli\u003eCertification: W3G\u003c\/li\u003e\n  \u003cli\u003eFlue diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eOuter dimensions: 35 x 35 cm (140), 40 x 40 cm (160 \/ 180), 48 x 48 cm (200)\u003c\/li\u003e\n  \u003cli\u003eWeight: 103–132 kg per linear metre, depending on diameter\u003c\/li\u003e\n  \u003cli\u003eConsumption per linear metre: 1 insulated liner, 1 centring ring, 3 outer blocks\u003c\/li\u003e\n  \u003cli\u003eUse: gas and oil including condensing, pellets, wood, mixed burners, fireplaces, stoves\u003c\/li\u003e\n  \u003cli\u003eSold by: linear metre\u003c\/li\u003e\n  \u003cli\u003eDelivery: made to order, subject to supplier stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTake this one if the house is airtight, if the boiler is condensing or sealed-combustion, or if the fuel is not settled. In an older, leaky house on a wood boiler it is more chimney than the job needs — LSK does that work for less. Size the flue from Leier's diagram using the appliance output and the useful height, and order the full height in one go, terminal set included.\u003c\/p\u003e","brand":"Leier","offers":[{"title":"140 mm","offer_id":57161660006778,"sku":"HGM-CS-LIR-MKL-14","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"160 mm","offer_id":57161660039546,"sku":"HGM-CS-LIR-MKL-16","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"180 mm","offer_id":57161660072314,"sku":"HGM-CS-LIR-MKL-18","price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 mm","offer_id":57161660105082,"sku":"HGM-CS-LIR-MKL-20","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/files\/MULTIKERAM-LAS.webp?v=1786606573"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/collections\/Cos-de-fum-Leier-LSK-1.webp?v=1786711458","url":"https:\/\/heligom.com\/en\/collections\/chimney-systems.oembed","provider":"HELIGOM","version":"1.0","type":"link"}