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    Gas condensing boilers

    Viessmann Vitotrol 300-A remote control with text display and buttons, front view
    Viessmann Vitotrol 300-A: wired remote control for up to 3 circuits (KM-BUS)
    Viessmann
    €345,53
    Domusa Avanttia NG floor-standing condensing boiler on a white background
    Inside the Domusa Avanttia NG: burner, expansion vessel, circulator and DHW tank
    Domusa Avanttia NG floor-standing gas condensing boiler with stainless DHW tank
    Domusa Teknik
    from €3.708,79
    Domusa Avanttia NG left outlet kit, copper pipes with valves
    Domusa Avanttia NG right outlet kit
    Domusa outlet kit for Avanttia NG: connections to the left, right or top
    Domusa Teknik
    from €125,89
    Domusa Ø60/100 coaxial horizontal outlet kit 1 m CGAS000375, catalogue drawing
    Domusa Ø60/100 coaxial vertical outlet kit CGAS000380, catalogue drawing
    Domusa Ø60/100 coaxial flue system for Avanttia NG: kits, pipes and elbows
    Domusa Teknik
    from €49,01
    Domusa Ø80/125 coaxial horizontal outlet kit 1 m CGAS000322, catalogue drawing
    Domusa Ø80/125 coaxial vertical outlet kit CGAS000315, catalogue drawing
    Domusa Ø80/125 coaxial flue system for Avanttia NG: kits, pipes and elbows
    Domusa Teknik
    from €67,93
    Domusa Ø80/80 twin-pipe outlet kit 1 m CGAS000325, catalogue drawing
    Domusa Ø80 90° elbow for twin-pipe flue CGAS000084
    Domusa Ø80/80 twin-pipe flue system for Avanttia NG: kit, pipes and elbows
    Domusa Teknik
    from €16,25
    Domusa flat roof flashing CGAS000074, catalogue drawing
    Domusa pitched roof flashing for 15 to 45° CGAS000075, catalogue drawing
    Domusa roof flashing for the Avanttia NG vertical flue, flat or pitched roof
    Domusa Teknik
    from €45,25
    Domusa CEVT000143 outdoor sensor with wall bracket
    Domusa outdoor sensor for the Avanttia NG boiler, weather compensation
    Domusa Teknik
    €20,89
    Domusa CONFORT WiFi thermostat on its desk stand
    Domusa CONFORT WiFi connected thermostat, programmable from your phone
    Domusa Teknik
    €147,49
    Domusa CONFORT CONTROL weekly programmable thermostat CELC000282
    Domusa CONFORT CONTROL weekly programmable wired thermostat
    Domusa Teknik
    €127,74
    Domusa Lago FB OT+ remote control with display and rotary knob
    Domusa Lago FB OT+ remote control with room sensor for Avanttia NG
    Domusa Teknik
    €173,63
    Domusa DX cathodic protection for the Avanttia NG boiler DHW tank
    Domusa Teknik
    €207,66

    Viessmann and Domusa gas condensing boilers

    A gas condensing boiler provides heating and hot water by recovering the heat in the flue gas vapour. Q-Tech brings together here the gas boilers we sell today, grouped by brand, each with its original components.

    Choose your collection

    CollectionWhat it includes
    Viessmann H2 Ready gas boilers and componentsVitodens 050-W, 100-W, 111-W and 200-W wall-hung boilers and the ADIO extension module
    Domusa gas boilers and componentsAvanttia NG floor-standing boiler with stainless tank and its original components

    Installation accessories are in Gas boiler accessories, and oil boilers in Oil condensing boilers.

    You can receive your boiler inside a pre-assembled plant room: Q-Tech assembles, configures and tests it in our workshop. See the process in Pre-Montaje Avanzado; to choose with the data of your case, message us on WhatsApp.

    FP54·261108