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    Thema H2O 21

    The essential balance between fire and water Starting from nature as a source of inspiration, the new Thema H2O thermo stove embraces the concepts of ecology through its materials and excellent performances. The high yields and the versatility of the shapes that characterize it, give life to an innovative thermo stove, able to be the protagonist of your home environment.

    On the return circuit, a chemical-physical water treatment system must be installed, for instance a magnetic dislimer.

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    Technical data

    Black Metal
    Pellets / Biomass
    MDi, Metal, Stone
    Maximum power
    21 kW
    Thermal power introduced
    19.3 kW
    Nominal thermal power to water
    17.3 kW
    Heated volume
    540 m³
    Performance with pellets or wood
    91.6 %
    CO emissions at 13% O²
    57 mg/Nm³
    Power levels
    Flue gas outlet
    Rear, Upper
    Air ducting
    260 kg
    Dimensions WxDxH
    105 x 40 x 126 cm
    Pellet tank capacity
    21 kg
    Flue gas output diameter
    80 mm
    ★ ★ ★ ★

    This product complies with the Class 4 Stars, according to the emission and performance requirements of the Decree of 7 November 2017, n°186 (Italy).


    • Mechanical safety devices: 3 bar outlet valve, boiler thermostat, air pressure switch and water pressure switch.
    • Safety electrical safety devices: inductive sensors that constantly check the position of motors rotation; flue gas probe.

    Supplied Accessories

    • Anti-condensation valve with thermostatic control of the system return temperature.
    • System pressure gauge.
    • Kit for DHW circuit: anti-condensation valve, electronic circulator system, DHW probe.
    • "L" bar for ash cleaning
    • Collar for top flue header
    • Hydraulic safety devices kit: expansions vase, 3 bar outlet valve, automatic vent valve, system drain.
    • Water tank probe

    Accessories on demand

    • Wi-Fi remote control via APP
    • Possible remote ignition via GSM device (optional) controlled via APP (only compatible with Android operating system).



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