Service      +48 874295630      Mon - Fri: 7:00-20:00 | Sat - Sun - Holidays: 10:00-16:00
Ask for product

Automatic boiler for demanding users
The device has been awarded an ECODESIGN certificate, features A+ energy rating, energy efficiency and emission standards to Directive 2009/125/EC of 21 October 2009 and the COMMISSION REGULATION (EU) 2015/1189.
A+ Energy Class Ecodesign 2020 OMS PRO - Monitoring and control system 5 Class
A1 Pellets A2 Pellets B Pellets
A1 Pellets A2 Pellets B Pellets
This boiler is subsidised in these countries:

Poland United Kingdom
EEI Pellets Matic
300 kW
EEI Pellets Matic
  • Multi-family house Multi-family house
  • Small farm Small farm
  • Large farm Large farm
  • Industrial and public buildings Industrial and public buildings


Operating a pellet boiler can be even more convenient. Automated boiler operation processes limit the manual operations to a minimum. Apart from the functions available in EEI PELLETS model, the MATIC version includes pneumatic heat exchanger cleaning and automatic ash removal from the ash pan.



Attention to the greatest convenience combined with low pellet and energy consumption. Energy efficiency is verified by the test results by the Accredited Research Laboratory. The highest performance is achieved by optimum use of all heating surfaces, including heat recovery from the ash. The boiler is thermally insulated and the combustion is controlled by a proprietary OMS PRO operating system supported by an oxygen sensor to set the optimum combustion and boiler operation parameters. 



The quality of materials used guarantees many years of operation at the highest efficiency. Every single component is carefully selected by KOSTRZEWA design department. Most of the boiler components are manufactured by KOSTRZEWA.  The cleaning systems and the ash separator (ash from pellet grades other than A1 may contain more residue) guarantee trouble free operation.



Our boilers guarantee failure-free operation for many years. High quality steel and the highest quality components. All our boilers are individually tested for durability at min.  6 bar - a feature hardly ever found elsewhere.



Innovative rotary PLATINUM BIO SPIN burner guarantees maintenance-free combustion of class A1, A2 and B wood pellets. The technology used allows to purchase pellet up to 50% cheaper than available for owners of other boilers (usually more expensive class A1 pellets).



Even the best boiler isn’t enough. We offer complete boiler room and heating system solutions. We offer advanced solutions including pellet storage, pneumatic fuel feeding, cascade automation, weather compensated CH system control, DHW and buffer tank control, return protection, fuel and ash sensors, heat pump, solar panel and gas boiler control.

Tests and certificates

Our boilers are tested by an accredited testing facility - a member of the international Association of Accreditation.


The test results verify that our high quality products are safe and meet the emission requirements that will be introduced in Poland in 2020


All boiler types undergo over 20 different tests including:


  • Boiler pressure test at 6 bar
  • Energy-efficiency and emission tests at 10%, 11% and 13% fuel oxygenation
  • Energy consumption test in operation and standby mode
  • Operational test in a closed loop system without auxiliary safety devices


Our boilers are included in the list of devices qualifying for a subsidy in many EU countries.

and cleaning


A remote monitoring and operating system developed by KOSTRZEWA for large pellet boiler rooms. The control system of a boiler and its function often does not meet all the requirements of the owner or boiler room operator. We have developed OMS PRO to provide additional functions: remote monitoring of the boiler room parameters, boiler cascade system monitoring, auxiliary heat source control, fuel storage and feeding system control, emergency and reserve conditions monitoring and many other functions. OMS PRO also allows real-time monitoring by our service department with remote access and technical support



An innovative burner with a rotating combustion chamber for granulated biomass fuels with ash content up to 2% (pellet class A1, A2, B); patented at the Patent Office of the Republic of Poland. 2nd generation Fuzzy Logic controller and two-section menu for reduced fuel consumption by up to 20% and reduced component wear compared to other available burners (reduced number of burner start-ups significantly reduces the amount of energy used). Burner cleaning has never been this easy - mechanical cleaning of the combustion chamber through the rotation of Platinum Bio SPIN’s grate. The rotation frequency is programmed to remove excessive ash depending on the fuel used to reduce burner shutdowns interval from 3 days to about 2 weeks (depending on the ash content of the fuel).



A virtually maintenance-free pneumatic device feeding pellet at a large distance from the storage area directly to the boiler including multiple sensors for a fully automatic operation.  If MINIMUM level is detected in the buffer tank, it is immediately refilled to the MAXIMUM level. The device can also be timer programmed, i.e. the buffer tank will be refilled to the MAXIMUM level at a pre-set date and time.

  KOSTRZEWA EEI Pellets Matic in the boiler room

KOSTRZEWA EEI Pellets Matic in the boiler room

Watch a video presentation of EEI Pellets Matic in the boiler room showing: 

boiler installation methods,  boiler stoking methods and Vacuum Pellets system design and operation.

EEI Pellets Matic
Object power selection
Boiler power Heating surface
m2 m3
300 kW 1500 - 3900 3750 - 9750
Surface is provided at ceiling height of 2.5 m.
300 kW
Flue draught mbar 0,15-0,30
Water capacity l 1155
Maximum working pressure bar 2
Test pressure bar 4
Flue gas temperature at rated output °C 110,3
Flue gas temperature at minimum output °C 84,9
Flue gas mass flow at rated output kg/s 0,0188
Flue gas mass flow at minimum output kg/s 0,0054
Flue connector diameter mm 300
Flow resistance at 10 K mbar no data
Flow resistance at 20 K mbar no data
Rated heat output kW 303
Heat output range kW 91-303
Efficiency at rated output % 93,6
Efficiency at minimum output % 91,9
Boiler class as per EN 303-5:2012 5
Combustion time at rated output
(fuel calorific value: 17,280 kJ/kg)
h no data
Temperature controller settings range °C 50 - 80
Minimum water return temperature °C 45
Fuel type Class Sawdust granulate (pellets) made to EN 303-5:2012 / PN- EN ISO 17225-2 Class C1 / A1)
Test fuel used in the certification procedure - A1.
Also compatible with A2 and B class pellet.
Storage hopper capacity l 295, 470, 770, 1386, 1460
Power supply V / Hz / A 230, 50, 2
Power input at rated output W 561
Power input at minimum output W 209
Power input in STANDBY mode W 2
Maximum power input W 1136


Galvanized and machine manufactured pellet storage hoppers are used as intermediate stores. The storage hoppers can be refilled manually or automatically from another store using Pellets Vacuum system. Available storage hopper capacities allow to position the boiler anywhere in the boiler room and extend the boiler operation time without manual refills. Optional storage hoppers from 295 l up to 1460 l capacity (approx. 1 tonne of pellet) are available.

PELLET is a processed waste timber compressed under high pressure without use of any bonding agents.


PELLET CLASSES TO PN-EN ISO 17225-2:2014-07:

  • A1 - ash content ≤0.7% Premium quality product
  • A2 - ash content ≤1.2%
  • B - ash content ≤2%

PELLET - eco-friendly, high-energy clean fuel!



Are you planning to install a new or make alterations to the existing boiler room?


We offer comprehensive consulting and support at each investment stage. We can help you develop a concept design, support the designer, and choose automatics, fuel feeding and fuel storage systems. We will present the actual investment costs and the base cost estimate. Each boiler room fitted with our boiler is covered by our technical support including a remote technical support.


Certificate 821.59 KB
Product data sheet 596.78 KB
Specification - standard/optional equipment 1.82 MB
Declaration of Conformity 105.09 KB

Informacje zawarte na stronie internetowej nie stanowią oferty w rozumieniu art. 66 Kodeksu Cywilnego z dn. 23.04.1964 r. Księga pierwsza, Tytuł IV, Dział II.