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Class 5, ecodesign boilers

DuoKO boiler

15-48 kW
  • DuoKo is a modern central heating boiler which thanks to its unique solution is available in two burner versions.
  • DuoKo eco-pea coal − is a boiler for efficient combustion of eco-pea coal on a rotary retort from the reputable company Pancerpol.
  • DuoKo pellet − a boiler with self-cleaning rotating pellet burner from KIPI.
  • Both versions of the boiler are not mutually exclusive. Once you have the boiler, you can at any time switch from eco-pea coal burner to pellet burner and vice versa without losing the parameters associated with the 5 Class and EcoDesign certificates! It is the latest flagship solution from KOTŁOSPAW.
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Basic Information


As a few in Poland, we offer DuoKo boiler in which it is possible to use two different burners depending on the needs and requirements, and at the same time without having to purchase new and remove existing equipment.

DuoKo is a fully automatic upper duct boiler, in which user support is limited to the loading of fuel and removal of ash. It is recommended to periodically clean the convection channels. Boiler control is very intuitive and has extensive modules, allows to connect up to 4 circulation pumps and the boiler operation can be controlled using an application from our smartphone or laptop.


  • pellets
  • eco-pea coal

Price list

Check price list
Moc nominalna Wielkość powierzchni ogrzewanej Cena netto VAT Cena brutto
15 kW – DuoKo ekogroszek 0-150 m²
0-200 m²*
8 658,54 zł 1 991,46 zł 10 650,00 zł
15 kW – DuoKo pellet 10 000,00 zł 2 300 zł 12 300,00 zł
24 kW – Duoko ekogroszek 150-240 m²
200-320 m²*
9 187,00 zł 2 113,00 zł 11 300,00 zł
24 kW – Duoko pellet 10 731,71 zł 2468,29 zł 13 200,00 zł
34 kW – Duoko ekogroszek 240-350 m²
320-460 m²*
10 325,20 zł 2 374,80 zł 12 700,00 zł
34 kW – Duoko pellet 12 024,39 zł 2 765,61 zł 14 790,00 zł
45 kW – Duoko ekogroszek 350-450 m²
460–600 m²*
11 463,42 zł 2 636,58 zł 14 100,00 zł
45 kW – Duoko pellet 14 065,04 zł 3 234,96 zł 17 300,00 zł


DuoKO boiler
Boiler type unit 15 24
Boiler power kW 15 24
Power range kW 4,5-15 6,5-24
Approximate area of the heated room 0-150*
Feeder capacity kg 173 179
Weight without water kg 347 408
Water capacity l 74 90
Fuel according to
PN-EN 303-5:2012
eco-pea coal Bituminous coal 31.2 pea-type coal grain size 5-25 mm. Calorific value of 26 MJ/kg
pellets Pellets 6-8 mm, pips and granules in the fraction of 5-10 mm C1 Fuel grade
Maximum water temperature ° C 85
Minimum water temperature ° C 50/60
Length of burning dni 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 boiler

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


DuoKO boiler

ecoMAX 860P

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.

Control eco-pea coal

ecoMAXX 800R2 controller stands out on the market with universal modern design and user-friendly interface (indication of operating parameters via icons on the graphic display). ecoMAXX 800R provides weather control for:

  • central heating direct circuit
  • three- or four-way valve and preparation of hot water
  • on a rotTOUCH & PLAY control system
  • supports ecoSTER remote control