Class 5, ecodesign boilers

DuoKo Pellet boiler

15-45 kW


  • DuoKo pellet − a boiler with self-cleaning rotating pellet burner from PellasX.
  • The structure of the exchanger has been optimized in order to obtain a very high-quality combustion process. The effect of these activities is very high thermal efficiency of the boiler and low emission of pollutants supplied to the atmosphere.
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Basic Information


Compact boiler for central heating, solid fuel type pellet – DuoKo meets all the requirements of Eco Design and class 5, making it a reliable, maintenance-free and efficient source of heat for small and large living and usable areas.

Boiler with pellet feeder

The DuoKo pellet boilers with a feeder and an automated control system produced by KOTŁOSPAW Pleszew are characterized by easy operation, modern design and low emission of harmful substances, corresponding to the current, restrictive standards. The maintenance-free boiler is made of the highest quality boiler sheet, welded in gas shields, which guarantees its above-average tightness and excellent insulation.

5th class boilers – Pleszew

The top-channel boiler for central heating with DuoKo pellets is distinguished by fully automatic control, for which the efficient ecoMAX 860P microprocessor system is responsible. Extensive modules enable ongoing supervision over the operation of the feeder, furnace and blower, regulate the temperature and enable the connection of up to 4 circulation pumps (CH, DHW, floor, circulation). Simple, intuitive operation of the device and the ability to control the operation of the controller using an application for a smartphone or laptop make the DuoKo pellet boiler fully comply with the current standards for maintenance-free and easy-to-use heating devices.

Pellet central heating boiler

Thanks to the automation of all processes, from combustion of solid fuel, through automatic switching on and off of the blower, to self-cleaning of the burner, the only operating steps necessary to be performed at the DuoKo central heating furnace are to remove the ash and refill the pellet hopper. Boilers with a feeder available in the power range from 15 to 45 kW – our specialists will be happy to help you choose a boiler ideally suited to the heating surface and individual needs.


  • pellets

Price list

Check price list
Nominal power The size of the heated area Netto price
VAT Brutto price
15 kW – DuoKo pellet 0-150 m²
0-200 m²*
17.186,99 zł 3.953,01 zł 21.140,00 zł
24 kW – Duoko pellet 150-240 m²
200-320 m²*
18.186,99 zł 4.183,01 zł 22.370,00 zł
34 kW – Duoko pellet 240-350 m²
320-460 m²*
19.447,15 zł 4.472,85 zł 23.920,00 zł
45 kW – Duoko pellet 350-450 m²
460–600 m²*
22.479,67 zł 5.170,33 zł 27.650,00 zł

* insulated building


DuoKo Pellet boiler
Boiler type unit 15 24 34 45
Boiler power kW 15 24 34 45
Power range kW 4,5-15 6,5-24 8,5-34 1,5-45
Approximate area of the heated room 0-150*
Feeder capacity – pellet kg 145 145 160 160
Weight without water kg 347 374 445 445
Water capacity l 74 90 103 103
Fuel according to
PN-EN 303-5:2012
pellets Pellets 6 mm, fraction granules, calorific value> 17 MJ / kg.
Maximum water temperature ° C 85
Length of burning days 2-7
Efficiency % 92
Cross-sectional dimension of the chimney Φ 180
Igniter power W 150
Connection ports flow 2 x 1″ Gw
return 2 x 1 ” Gw

* for older buildings with inferior thermal insulation 100W/m2
* for modern buildings with better thermal insulation 75W/m2


DuoKo Pellet boiler

schemat wymiary

DuoKo unit 15 kW 24 kW 34 kW 45 kW
A mm 1459 1459 1459 1459
B mm 1173 1173 1230 1230
C mm 508 538 608 608
D mm 658 628 620 620
E mm 505 545 597 597
F mm 616 646 700 700
G mm 89 89 89 89
H mm 1354 1354 1354 1354
I mm 1854 1854 1854 1854
a Φ 1″ Gw 1″ Gw 1″ Gw 1″ Gw
b Φ 160 160 160 160


DuoKo Pellet boiler

ecoMAX 860P

ecoMAX 800P plum regulator pelletowy

ecoMAX 860P is a device made in advanced technology. It controls the combustion process in solid fuel boilers with an igniter. By default, it supports the central heating and hot water heating circuits as well as the mixer circuit. The controller is available in a complete enclosure and in a version with a removable panel enabling installation on the front of the boiler.This latest generation microprocessor controller means for the user:

  • intuitive and simple use
  • many interesting functions
  • unique design
  • TOUCH & PLAY control system
  • attractive display presenting information in the form of readable icons
  • comfort with the support of the ecoSTER remote control
  • comfortable on-line operation of the boiler via the Internet

It has a modular structure, ensuring BUS expansion. The controller controls: boiler (burner) operation, supports basic central heating and hot water functions, mixer pump and mixer. Additional modules enable cooperation with the buffer and mixer systems. In addition, it is possible to work with lambda probe module (ecoLAMBDA). The controller uses a smart Menu system. The system makes unconnected elements inactive (invisible). This solution allows easy and comfortable use.