Wood Chip Boiler

Eco-HK
20–60 kW

The sum of top heating solutions.
Energy label: A+
Hot anniversary campaign - save now!

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Unique step grate system
Automatic fuel quality detection
Cost-reducing with eco mode
Eco-control for lowest micro-dust levels

Benefits Details Technical details Supplies Target group References Your proposal Dealer information News

State-of-the-art wood chip heating technology

Heating system for the small and medium output range

Hargassner’s wood chip poilers for the small and medium output range is particularly suitable for use by farmers as well as single-family and multi-family homes. First-class efficiencies enable cost-effective heating.

40 Years anniversary campaign: Order now and benefit from hot savings!

Benefits:
Eco-HK 20–60 kW

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Unique step grate system
Highest efficiency
Firebed monitoring with contactless sensors
Lambda sensor with fuel quality detection
Heat exchanger cleaning system (in 1st + 2nd pass)
Energy-saving ignition: 300 W
Z-form double rotary valve - 100% burn-back safety
Induced draught (EC motor) with vacuum monitoring
Ash discharge for fly ash & grate ash
No thermal safety circuit necessary
Left & right boiler version (return lift always on the insertion side)
Modern touch display control
Mobile control - smart home app
5 year warranty acc. warranty card
Energy efficiency class A+
Integrated return lift (optional)
Fully automatic ash extraction system (optional)
Option: Wood log combustion

Our boilers in detail

Specifics
of Eco-HK 20–60 kW

STRONG COMFORT IN STRONG 3D!

Discover the low wood chip output range in all-round comfort – simply move and zoom the Eco-HK 20–60 kW boiler in all directions as desired.

Experience this modern heating technology right now in your own future boiler room. With augmented reality, you can see into the future of your wood chip heating system with the AR button. Simply click the AR button and use your fingers to position, rotate and scale the boiler. You will already have an idea of how the Eco-HK 20–60 kW will fit perfectly into your room.

All technical details and important components await you in the following sectional view.

Open 3D model in a new window

Step grate system
Firebed level control
Turbulators with autom. boiler cleaning system (also in 1st pass)
Ash box 30 l; optional: ash suction system for very long maintenance intervals
Automatic ignition with 300 W
Bicameral rotary valve in Z-form (18 cm depth)
Recirculation
Heat exchanger: no thermal safety circuit required
Exhaust fan (EC motor) with negative pressure monitoring
Integrated back-end protection, optional
Eco-RA – energy-saving fuel extraction
Ash extraction system for fly and grate ash
Negative pressure monitoring
Fully refractory-lined combustion chamber
Flame concentration jets made of high-quality refractory
Lambda sensor
Stainless steel stoker auger and pipe

View 3D model View cross section

Schnittbild mit Innenleben der Hackgutheizung Eco-HK 20–60 kW | Hargassner

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

%

°C

mm

kg

l

m²

mm

l

"

Eco-HK 20

Nominal capacity (NC) 20 kW

Fuel heat output 20,8 kW

Minimum capacity 6 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 96,2* %

NCV efficiency at 30 % nominal output (np) 93,7 %

GCV efficiency at nominal output 86,5 %

GCV efficiency at 30 % nominal output 84,3 %

Seasonal energy efficiency ETAs 79** / 79** %

Boiler temperature range 69-78 °C

Measures (w x h x d) 660 x 1455 x 1230 mm

Weight 690 kg

Filling volume - l

Space requirement 0,81 m²

Flue pipe diameter 150 mm

Ash box volume 30 l

Water content 100 l

Flow/Return 5/4 "

Boiler label A+

Eco-HK 30

Nominal capacity (NC) 30 kW

Fuel heat output 31,8 kW

Minimum capacity 9 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 95,9* %

NCV efficiency at 30 % nominal output (np) 93,7 %

GCV efficiency at nominal output 86,2 %

GCV efficiency at 30 % nominal output 84,3 %

Seasonal energy efficiency ETAs 79** / 82** %

Boiler temperature range 69-78 °C

Measures (w x h x d) 660 x 1455 x 1230 mm

Weight 690 kg

Filling volume - l

Space requirement 0,81 m²

Flue pipe diameter 150 mm

Ash box volume 30 l

Water content 100 l

Flow/Return 5/4 "

Boiler label A+

Eco-HK 35

Nominal capacity (NC) 35 kW

Fuel heat output 36,6 kW

Minimum capacity 10,5 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 95,7* %

NCV efficiency at 30 % nominal output (np) 93,7 %

GCV efficiency at nominal output 86,1 %

GCV efficiency at 30 % nominal output 84,3 %

Seasonal energy efficiency ETAs 80** / 82** %

Boiler temperature range 69-78 °C

Measures (w x h x d) 660 x 1455 x 1230 mm

Weight 690 kg

Filling volume - l

Space requirement 0,81 m²

Flue pipe diameter 150 mm

Ash box volume 30 l

Water content 100 l

Flow/Return 5/4 "

Boiler label A+

Eco-HK 40

Nominal capacity (NC) 40 kW

Fuel heat output 41,8 kW

Minimum capacity 12 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 95,7* %

NCV efficiency at 30 % nominal output (np) 94 %

GCV efficiency at nominal output 86,4 %

GCV efficiency at 30 % nominal output 84,8 %

Seasonal energy efficiency ETAs 80** / 82** %

Boiler temperature range 69-78 °C

Measures (w x h x d) 745 x 1455 x 1320 mm

Weight 810 kg

Filling volume - l

Space requirement 0,98 m²

Flue pipe diameter 150 mm

Ash box volume 30 / 60*** l

Water content 142 l

Flow/Return 5/4 "

Boiler label A+

Eco-HK 50

Nominal capacity (NC) 49 kW

Fuel heat output 51,4 kW

Minimum capacity 14,7 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 95,8* %

NCV efficiency at 30 % nominal output (np) 94,5 %

GCV efficiency at nominal output 86,9 %

GCV efficiency at 30 % nominal output 85,7 %

Seasonal energy efficiency ETAs 81** / 82** %

Boiler temperature range 69 - 78 °C

Measures (w x h x d) 745 x 1455 x 1320 mm

Weight 810 kg

Filling volume - l

Space requirement 0,98 m²

Flue pipe diameter 150 mm

Ash box volume 30 / 60*** l

Water content 142 l

Flow/Return 5/4 "

Boiler label A+

Eco-HK 60

Nominal capacity (NC) 60 kW

Fuel heat output 62,6 kW

Minimum capacity 18 kW

Electric capacity - kW

NCV efficiency at nominal output (nn) in % 95,8* %

NCV efficiency at 30 % nominal output (np) 95 %

GCV efficiency at nominal output 87,6 %

GCV efficiency at 30 % nominal output 86,9 %

Seasonal energy efficiency ETAs 82** / 83** %

Boiler temperature range 69 - 78 °C

Measures (w x h x d) 745 x 1455 x 1320 mm

Weight 810 kg

Filling volume - l

Space requirement 0,98 m²

Flue pipe diameter 150 mm

Ash box volume 30 / 60*** l

Water content 142 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 | required back-end protection 58 °C | electrical supply 400 V AC, 50 Hz, 13 A fuse protection
*according to type test with test fuel
**without eCleaner / with eCleaner
***optional

A small insight