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Wood Log Boiler

Neo-MHV
30–45 kW

Maximum flexibility
Energy label: A+ (e.g.: Neo-MHV 35)
Hot anniversary campaign - save now!

  • 300 l filling chamber for ½ m & 1 m logs
  • Integrated back-end protection
  • Minimum space requirements
  • Easy to install

A true miracle of space

The new Neo-MHV 1/2 & 1 meter log heating

As a biomass pioneer, Hargassner researches and develops the future of heating with a keen sense of the environment. These innovations make the boilers some of the best biomass heating solutions available in the world today. The Neo-MHV gives wood log boilers with higher heating requirements the freedom to choose: with two log lengths, there are twice as many options for reliable heat. Despite its extremely large filling chamber, it is still a real space saver. Sophisticated technology and controls make it possible to realise small outputs despite the use of 1 metre logs. The ideal areas of application for the new Neo-MHV are single- and multi-family houses as well as agriculture and forestry.

40 Years anniversary campaign: Order now and benefit from hot savings!
  • For 1/2 m and 1 m log pieces
  • Highest efficiency
  • Automatic ignition
  • Low space requirements (only 1,1 m²)
  • 300 l filling chamber
  • Easy to install
  • Excellent combustion
  • Lambda-Touch-Tronic control unit
  • Filling chamber light (standard)
  • Automatic ignition (standard)
  • Full refractory-lined combustion chamber
  • Speed controlled exhaust fan
  • Large filling door 500 x 755 mm
  • 5-year warrenty acc. warranty card
  • Energy efficiency class A+
  • Integrated back-end protection (optional)

Insides in detail

Cross section
of the Neo-MHV 30–45 kW

  1. Large filling door
  2. Filling chamber for ½ m and 1 m logs
    (up to 110 cm)
  3. Combustion chamber lining
    – prevents tar formation
  4. Speed-controlled pressure fan
  5. Primary air motor
  6. Secondary air motor
  7. Automatic ignition
  8. Gas-burning honeycomb
  9. High-temperature burnout zone
  10. Lambda sensor
  11. Turbulators
  12. Heat exchanger
  13. Exhaust fan
  14. Top smoulder gas vent
  15. Back-end protection unit
  16. Cooling coil for thermal safety circuit
  17. Cleaning door for heat exchanger
  18. Cleaning door
  19. Ash chamber
  20. Ash pan
View cross section

Technical
details

Nominal capacity (NC)
Fuel heat output
Minimum capacity
Electric capacity
NCV efficiency at nominal output
NCV efficiency at 30 % nominal output
GCV efficiency at nominal output
GCV at 30 % nominal output
Seasonal energy efficiency ETAs
Boiler temperature range
Measures (w x h x d)
Weight
Filling volume
Space requirement
Flue pipe diameter
Ash box volume
Water content
Flow/Return
Energy label
Unit
kW
kW
kW
kW
%
%
%
%
%
°C
mm
kg
l
mm
l
l
"
    Neo-MHV 30
    Nominal capacity (NC) 30 kW
    Fuel heat output 33,2 kW
    Minimum capacity 26,4 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 90,4 %
    NCV efficiency at 30 % nominal output (np) 90,1 %
    GCV efficiency at nominal output 84,2 %
    GCV efficiency at 30 % nominal output 83,9 %
    Seasonal energy efficiency ETAs 80 %
    Boiler temperature range 78 °C
    Measures (w x h x d) 850 x 1770 x 1435 mm
    Weight 1030 kg
    Filling volume 300 l
    Space requirement 1,10
    Flue pipe diameter 150 mm
    Ash box volume - l
    Water content 150 l
    Flow/Return 5/4 "
    Boiler label A+
    Neo-MHV 35
    Nominal capacity (NC) 35 kW
    Fuel heat output 38,6 kW
    Minimum capacity 26,4 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 90,7 %
    NCV efficiency at 30 % nominal output (np) 90,1 %
    GCV efficiency at nominal output 84,5 %
    GCV efficiency at 30 % nominal output 83,9 %
    Seasonal energy efficiency ETAs 80 %
    Boiler temperature range 78 °C
    Measures (w x h x d) 850 x 1770 x 1435 mm
    Weight 1030 kg
    Filling volume 300 l
    Space requirement 1,10
    Flue pipe diameter 150 mm
    Ash box volume - l
    Water content 150 l
    Flow/Return 5/4 "
    Boiler label A+
    Neo-MHV 40
    Nominal capacity (NC) 40 kW
    Fuel heat output 44 kW
    Minimum capacity 26,4 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 91 %
    NCV efficiency at 30 % nominal output (np) 90,1 %
    GCV efficiency at nominal output 84,8 %
    GCV efficiency at 30 % nominal output 83,9 %
    Seasonal energy efficiency ETAs 80 %
    Boiler temperature range 78 °C
    Measures (w x h x d) 850 x 1770 x 1435 mm
    Weight 1030 kg
    Filling volume 300 l
    Space requirement 1,10
    Flue pipe diameter 150 mm
    Ash box volume - l
    Water content 150 l
    Flow/Return 5/4 "
    Boiler label A+
    Neo-MHV 45
    Nominal capacity (NC) 44,9 kW
    Fuel heat output 49,1 kW
    Minimum capacity 26,4 kW
    Electric capacity - kW
    NCV efficiency at nominal output (nn) in % 91,4 %
    NCV efficiency at 30 % nominal output (np) 90,1 %
    GCV efficiency at nominal output 85,1 %
    GCV efficiency at 30 % nominal output 83,9 %
    Seasonal energy efficiency ETAs 81 %
    Boiler temperature range 78 °C
    Measures (w x h x d) 850 x 1770 x 1435 mm
    Weight 1030 kg
    Filling volume 300 l
    Space requirement 1,10
    Flue pipe diameter 150 mm
    Ash box volume - l
    Water content 150 l
    Flow/Return 5/4 "
    Boiler label A+

    NCV = Net Calorific Value | GCV = Gross Calorific Value
    max. operation temperature 95 °C | max. operating pressure 3 bar | electrical supply 230 V AC, 50 Hz, 13 A fuse protection