{"product_id":"domusa-avanttia-ng-caldera-pie-condensacion-gas","title":"Domusa Avanttia NG floor-standing gas condensing boiler with stainless DHW tank","description":"\u003ch2\u003eFloor-standing gas condensing boiler with a stainless DHW tank for homes, from 24 to 33 kW\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDomusa Avanttia NG\u003c\/strong\u003e is a \u003cstrong\u003efloor-standing gas condensing boiler\u003c\/strong\u003e with a stainless steel hot water tank inside the same casing. Q-Tech assembles and tests it in our workshop as part of a pre-assembled plant room, or integrates it into your existing plant room.\u003c\/p\u003e\n\u003ch3\u003eSummary\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eFloor-standing gas condensing boiler with built-in domestic hot water (DHW) tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand and model\u003c\/th\u003e\n\u003ctd\u003eDomusa Teknik Avanttia NG, 4 models: 24 HDX 120 L, 24 HDX 150 L, 28 HDX 150 L and 33 HDX 150 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eHeating and domestic hot water (DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUseful output at 50\/30 °C\u003c\/th\u003e\n\u003ctd\u003eFrom 25.3 to 35.6 kW depending on model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHot water\u003c\/th\u003e\n\u003ctd\u003eStainless tank of 120 or 150 litres; from 826 to 957 litres per hour continuous with a 30 °C rise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEfficiency\u003c\/th\u003e\n\u003ctd\u003eClass A for heating and DHW, XL DHW profile; 1:10 modulation; NOx class 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuel\u003c\/th\u003e\n\u003ctd\u003eNatural gas from the factory; propane after adjustment by a technician authorised by Domusa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e3 years from official commissioning, extendable to 7 years with the Domusa Teknik extension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQ-Tech installation\u003c\/th\u003e\n\u003ctd\u003eInside a \u003ca href=\"\/en-en\/pages\/pre-montaje-avanzado\" title=\"Advanced pre-assembly of plant rooms\"\u003epre-assembled plant room\u003c\/a\u003e or on-site by an Expert Technician\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat is the Domusa Avanttia NG?\u003c\/h3\u003e\n\u003cp\u003eThe Domusa Teknik Avanttia NG is a floor-standing gas condensing boiler for heating and DHW with a built-in stainless steel tank of 120 or 150 litres. Its premix burner adjusts combustion through flame ionisation and modulates from 1 to 10. It has a footprint of 560 × 610 mm.\u003c\/p\u003e\n\u003ch3\u003eWhat problem does it solve?\u003c\/h3\u003e\n\u003cp\u003eIn a home with several bathrooms, an instantaneous combi boiler falls short when two taps run at the same time. A separate cylinder solves the flow rate, but it takes up space and adds connections and failure points to the plant room.\u003c\/p\u003e\n\u003cp\u003eThe Avanttia NG combines boiler and \u003cstrong\u003estainless tank of 120 or 150 litres\u003c\/strong\u003e in a single unit. Domusa states \u003cstrong\u003eup to 367 litres in 10 minutes\u003c\/strong\u003e with a 30 °C rise and an XL DHW profile. Q-Tech calculates the heating and hot water demand before recommending a model.\u003c\/p\u003e\n\u003ch3\u003eTechnical data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBoiler type\u003c\/th\u003e\n\u003ctd\u003eFloor-standing, condensing, with DHW tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuel\u003c\/th\u003e\n\u003ctd\u003eNatural gas (G20) set at the factory; propane (G31) by changing the gas parameter and adjusting combustion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGas supply pressure\u003c\/th\u003e\n\u003ctd\u003e20 mbar with natural gas; 37 mbar with propane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEfficiency\u003c\/th\u003e\n\u003ctd\u003eOver 108% on net calorific value at 30% load, according to Domusa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeasonal space heating efficiency\u003c\/th\u003e\n\u003ctd\u003e92% (class A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModulation\u003c\/th\u003e\n\u003ctd\u003e1:10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNOx emissions\u003c\/th\u003e\n\u003ctd\u003eClass 6, below 56 mg\/kWh under the 2018 ErP regulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBoiler body\u003c\/th\u003e\n\u003ctd\u003eSingle-coil stainless steel, with no parallel circuits or welds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCombustion control\u003c\/th\u003e\n\u003ctd\u003eGas Adaptative, with flame ionisation control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDHW tank\u003c\/th\u003e\n\u003ctd\u003eStainless steel, 120 or 150 litres, with recirculation connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating temperature\u003c\/th\u003e\n\u003ctd\u003eFrom 25 to 80 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDHW temperature\u003c\/th\u003e\n\u003ctd\u003eFrom 10 to 65 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeating pressure\u003c\/th\u003e\n\u003ctd\u003eFrom 0.5 to 3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower supply\u003c\/th\u003e\n\u003ctd\u003e230 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtection rating\u003c\/th\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlue\u003c\/th\u003e\n\u003ctd\u003eConcentric Ø 60\/100 or 80\/125 and twin-pipe Ø 80\/80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEquipment\u003c\/th\u003e\n\u003ctd\u003eHigh-efficiency circulator, diverter valve, by-pass, heating and DHW expansion vessels, safety valves, automatic air vent, filling valve, dielectric unions and condensate trap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMade in\u003c\/th\u003e\n\u003ctd\u003eSpain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eModels and data by variant\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eUseful output 80\/60 °C\u003c\/th\u003e\n\u003cth\u003eUseful output 50\/30 °C\u003c\/th\u003e\n\u003cth\u003eContinuous DHW (30 °C rise)\u003c\/th\u003e\n\u003cth\u003eDHW in 10 minutes\u003c\/th\u003e\n\u003cth\u003eTank\u003c\/th\u003e\n\u003cth\u003eExpansion vessel\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eEmpty weight\u003c\/th\u003e\n\u003cth\u003eDomusa reference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e24 HDX 120 L\u003c\/th\u003e\n\u003ctd\u003e23.7 kW\u003c\/td\u003e\n\u003ctd\u003e25.3 kW\u003c\/td\u003e\n\u003ctd\u003e826 l per hour\u003c\/td\u003e\n\u003ctd\u003e304 l\u003c\/td\u003e\n\u003ctd\u003e120 l\u003c\/td\u003e\n\u003ctd\u003e8 l\u003c\/td\u003e\n\u003ctd\u003e1,555 mm\u003c\/td\u003e\n\u003ctd\u003e170 kg\u003c\/td\u003e\n\u003ctd\u003eTAVA000164\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e24 HDX 150 L\u003c\/th\u003e\n\u003ctd\u003e23.7 kW\u003c\/td\u003e\n\u003ctd\u003e25.3 kW\u003c\/td\u003e\n\u003ctd\u003e892 l per hour\u003c\/td\u003e\n\u003ctd\u003e357 l\u003c\/td\u003e\n\u003ctd\u003e150 l\u003c\/td\u003e\n\u003ctd\u003e8 l\u003c\/td\u003e\n\u003ctd\u003e1,725 mm\u003c\/td\u003e\n\u003ctd\u003e180 kg\u003c\/td\u003e\n\u003ctd\u003eTAVA000165\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e28 HDX 150 L\u003c\/th\u003e\n\u003ctd\u003e28 kW\u003c\/td\u003e\n\u003ctd\u003e30.1 kW\u003c\/td\u003e\n\u003ctd\u003e957 l per hour\u003c\/td\u003e\n\u003ctd\u003e367 l\u003c\/td\u003e\n\u003ctd\u003e150 l\u003c\/td\u003e\n\u003ctd\u003e12 l\u003c\/td\u003e\n\u003ctd\u003e1,725 mm\u003c\/td\u003e\n\u003ctd\u003e180 kg\u003c\/td\u003e\n\u003ctd\u003eTAVA000166\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e33 HDX 150 L\u003c\/th\u003e\n\u003ctd\u003e33 kW\u003c\/td\u003e\n\u003ctd\u003e35.6 kW\u003c\/td\u003e\n\u003ctd\u003e957 l per hour\u003c\/td\u003e\n\u003ctd\u003e367 l\u003c\/td\u003e\n\u003ctd\u003e150 l\u003c\/td\u003e\n\u003ctd\u003e12 l\u003c\/td\u003e\n\u003ctd\u003e1,725 mm\u003c\/td\u003e\n\u003ctd\u003e180 kg\u003c\/td\u003e\n\u003ctd\u003eTAVA000167\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eWidth and depth: 560 × 610 mm on all four models. Data from the Domusa Teknik 2026 price list and Avanttia NG catalogue; empty weight from the installation manual.\u003c\/p\u003e\n\u003ch3\u003eCompatibility and limits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIt leaves the factory set for natural gas. For propane, a professional authorised by Domusa Teknik changes the gas parameter and adjusts combustion.\u003c\/li\u003e\n\u003cli\u003eFlue with Domusa accessories only: concentric Ø 60\/100 up to 10 m horizontal and 11 m vertical; concentric Ø 80\/125 up to 20 and 22 m; twin-pipe Ø 80\/80 up to 30 m. Each bend reduces the allowed length.\u003c\/li\u003e\n\u003cli\u003eThe hydraulic connections are routed to the left, right or top with the Avanttia NG outlet kit, sold separately.\u003c\/li\u003e\n\u003cli\u003eIt accepts a room thermostat, an OpenTherm remote control such as the Lago FB OT+ and an outdoor sensor to adapt the output to the weather.\u003c\/li\u003e\n\u003cli\u003eDomusa includes commissioning by its official technical service; travel is charged separately.\u003c\/li\u003e\n\u003cli\u003eGas and heating installation and certification require a licensed installation company.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen this product is not the right choice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIf you want to move away from gas and keep your radiators, the \u003ca href=\"\/en-en\/products\/domusa-dual-clima-ht-pro-r290-heat-pump\" title=\"Domusa Dual Clima HT Pro heat pump\"\u003eDomusa Dual Clima HT Pro\u003c\/a\u003e heat pump delivers flow temperatures of up to 75 °C.\u003c\/li\u003e\n\u003cli\u003eIf you want heating and hot water from an indoor unit without combustion, the \u003ca href=\"\/en-en\/products\/domusa-nanoclima-4-hdx-135-indoor-heat-pump-dhw\" title=\"Domusa NanoClima 4 HDX 135 indoor heat pump with DHW\"\u003eDomusa NanoClima 4 HDX 135\u003c\/a\u003e has 135 litres of DHW.\u003c\/li\u003e\n\u003cli\u003eIf the home has neither natural gas nor a propane tank, the boiler has no fuel: choose a heat pump.\u003c\/li\u003e\n\u003cli\u003eIf you only need heating, without hot water storage, a boiler without a tank takes up less space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich model do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt depends on the heating output and the hot water use. Send us the floor area, insulation, emitters and number of bathrooms on \u003ca href=\"https:\/\/wa.me\/qtechhouses\" target=\"_blank\" rel=\"noopener\"\u003eWhatsApp\u003c\/a\u003e and we will recommend a model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work with propane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It leaves the factory set for natural gas, and a technician authorised by Domusa converts it to propane by changing a parameter and adjusting combustion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it hydrogen ready?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDomusa Teknik does not publish compatibility with hydrogen blends for the Avanttia NG. Its approved gases are natural gas and propane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranty does it have?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree years from official commissioning\u003c\/strong\u003e, according to Domusa Teknik, with an annual service. It extends to 7 years, including travel, labour and spare parts, if you take out the extension with the Domusa technical service within one month of commissioning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the lead time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is in stock at our warehouse. Because of its weight, transport is quoted separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. It needs a licensed installation company and Domusa commissioning; Q-Tech integrates it and carries out the pre-commissioning check.\u003c\/p\u003e\n\u003ch3\u003eQ-Tech installation and support\u003c\/h3\u003e\n\u003cp\u003eThe Avanttia NG can arrive on site inside a \u003cstrong\u003epre-assembled plant room\u003c\/strong\u003e: Q-Tech assembles it in our workshop with the rest of the plant room, configures it and runs safety, operating and pressure tests. The plant room \u003cstrong\u003earrives tested and ready to connect\u003c\/strong\u003e; the final connection is made by the site installer or by Q-Tech with the \u003ca href=\"\/en-en\/products\/tecnico-experto-instalacion\" title=\"On-site Expert Technician by the day\"\u003eon-site Expert Technician by the day\u003c\/a\u003e. See the process in \u003ca href=\"\/en-en\/pages\/pre-montaje-avanzado\" title=\"Advanced pre-assembly of plant rooms\"\u003ePre-Montaje Avanzado\u003c\/a\u003e and in the \u003ca href=\"\/en-en\/products\/tecnico-experto-pre-montaje-nave\" title=\"Expert Technician workshop pre-assembly\"\u003eExpert Technician workshop pre-assembly\u003c\/a\u003e service.\u003c\/p\u003e\n\u003cp\u003eIf another company installs the boiler, or it replaces a boiler in an existing system, Q-Tech first carries out a verification visit with the \u003ca href=\"\/en-en\/products\/tecnico-experto-in-situ-horas\" title=\"On-site hourly Expert Technician\"\u003eon-site hourly Expert Technician\u003c\/a\u003e. The pre-commissioning check leaves everything ready for the official commissioning by the Domusa technical service.\u003c\/p\u003e\n\u003cp\u003eTo choose a model, book a \u003ca href=\"\/en-en\/products\/expert-technician-remote-technical-call\" title=\"Expert Technician technical call\"\u003etechnical call\u003c\/a\u003e or message us on \u003ca href=\"https:\/\/wa.me\/qtechhouses\" target=\"_blank\" rel=\"noopener\"\u003eWhatsApp\u003c\/a\u003e. More units and components in \u003ca href=\"\/en-en\/collections\/calefaccion\" title=\"Heating\"\u003eheating\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"qt-calc\" style=\"display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:1.6em 0;\"\u003e\u003cdiv style=\"flex:1 1 280px;padding:16px 18px;border:1px solid rgba(27,34,48,0.14);border-radius:12px;background:rgba(27,34,48,0.03);\"\u003e\u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eQ-Tech VDI 2035 calculator\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"margin:0 0 8px;\"\u003eCheck whether the water in your heating system meets the VDI 2035 guideline (Part 1, 2021). Enter the output, the system volume in litres and the hardness and conductivity of your mains water: the calculator gives you the verdict and the three key figures for filling or topping up the circuit. If you need it, we will send you the full report.\u003c\/p\u003e\u003cp style=\"margin:0;font-size:0.85em;opacity:0.75;\"\u003eGuidance only: check the manufacturer's requirements.\u003c\/p\u003e\u003c\/div\u003e\u003ca href=\"\/en-en\/pages\/calculadora-vdi-2035\" title=\"Open the VDI 2035 calculator\" style=\"flex:1 1 280px;display:block;border-radius:12px;overflow:hidden;box-shadow:0 4px 14px rgba(27,34,48,0.12);\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/vdi2035-calculadora-banner-qtech-en.webp?v=1794073125\" alt=\"VDI 2035 calculator: check whether your system water meets the guideline. Open the calculator\" width=\"2400\" height=\"1200\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003ch3\u003eDocumentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.domusateknik.com\/en\/avanttia-ng\" target=\"_blank\" rel=\"noopener\" title=\"Avanttia NG at domusateknik.com\"\u003eOfficial Avanttia NG page at Domusa Teknik\u003c\/a\u003e, with manuals, catalogue, warranty document and energy labels for each model (mostly in Spanish).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"qt-nota-stock\"\u003e\u003cstrong\u003eAvailability and lead times:\u003c\/strong\u003e this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time. Because of its weight, transport is quoted separately.\u003c\/p\u003e","brand":"Domusa Teknik","offers":[{"title":"24 HDX 120 L","offer_id":59069067919704,"sku":"DO-TAVA000164","price":3143.04,"currency_code":"EUR","in_stock":true},{"title":"24 HDX 150 L","offer_id":59069067952472,"sku":"DO-TAVA000165","price":3242.3,"currency_code":"EUR","in_stock":true},{"title":"28 HDX 150 L","offer_id":59069067985240,"sku":"DO-TAVA000166","price":3276.83,"currency_code":"EUR","in_stock":true},{"title":"33 HDX 150 L","offer_id":59069068018008,"sku":"DO-TAVA000167","price":3458.11,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/domusa-avanttia-ng-caldera-pie-condensacion-gas-fondo-blanco.webp?v=1794129420","url":"https:\/\/q-tech.es\/en\/products\/domusa-avanttia-ng-floor-standing-gas-condensing-boiler","provider":"Q-Tech ® ","version":"1.0","type":"link"}