Pellet burner for boiler — retrofit and selection
Looking for a pellet burner for your boiler? You’ve come to the manufacturer. PellasX designs and manufactures pellet burners from 16 to 500 kW — for manual-feed boilers, retort boilers, water boilers, and industrial units. On this page we’ll help you select the right model, understand the costs, and see how a retrofit works step by step.
Need a quick answer? Call or write to our technical department — we will select a burner for your boiler free of charge. Go to contact →
On this page
- What is a pellet burner for a boiler and how does it work?
- PellasX burner lines — which model for which boiler
- Comparison table: boiler type → recommended burner
- How much does a pellet burner cost? Prices, TCO, and subsidies
- What does installing a burner in a boiler look like?
- Why PellasX and not Kipi, Venma, or Eco-Palnik?
- Request a quote or burner selection
What is a pellet burner for a boiler and how does it work?
A pellet burner for a boiler is a device mounted in the boiler door or feed opening that automatically feeds, ignites, and combusts wood pellets. It replaces manual firing with coal or wood, turning an old manual-feed boiler into a fully automatic heating unit.
The operating principle is straightforward: a screw feeder transports pellets from the hopper to the burner’s combustion chamber. A blower fan delivers a precisely measured amount of air, and the ignition heater starts combustion. An electronic controller regulates the output according to heat demand — it ignites, modulates, and shuts down the burner automatically. You set the temperature and forget about the rest.
Key advantage: retrofitting a boiler with a pellet burner costs 3–5 times less than buying a new pellet boiler. You keep your existing boiler, your existing CH installation, and your chimney — you only replace the way the fuel is burned.
PellasX burner lines — which model for which boiler
We manufacture four lines of pellet burners. Each is designed for a different type of application. Below you will find a short description of each line with its typical use — followed by a detailed comparison table.
PellasX Revo (16–35 kW) — for single-family homes
The Revo line is our bestseller in the residential segment. Burners with output from 16 to 35 kW fit perfectly with manual-feed boilers for coal, wood, or fine coal that dominate in Polish single-family homes. Revo stands out with its compact design (it fits in most standard boiler doors), low noise level, and intuitive controller with an LCD display.
For whom: single-family homes of 80–250 m², manual-feed boilers 15–40 kW, users looking for a simple and reliable solution.
PellasX M (16–500 kW) — universal professional line
The M line is our most extensive series, covering the full output range from 16 to 500 kW. M burners are installed in both home boilers and boiler rooms of multi-family buildings, workshops, production halls, and public facilities. A heat-resistant steel construction, an advanced controller with remote control capability, and output modulation in the 30–100% range make the M line a universal choice for demanding installers.
For whom: multi-family buildings, commercial facilities, workshops, district boiler rooms, farms, any water boiler 16–500 kW.
PellasX X (26–750 kW) — industrial power
The X line features burners designed for continuous operation in demanding industrial conditions. A reinforced combustion chamber, a dual fuel feeding system, and tolerance for lower-grade pellets (including agri-pellets) make the X line the choice for applications such as dryers, industrial furnaces, factory boiler rooms, and local heating plants.
For whom: industry, dryers, heating plants, industrial and steam boilers above 26 kW.
PellasX ECOS (20–100 kW) — ecological standard
The ECOS line consists of burners designed for the lowest emissions and highest efficiency. They meet the requirements of the Ecodesign standard and are recommended wherever ecological certification is required — for example, when installed with funding from the Clean Air programme. A ceramic combustion chamber provides a stable temperature and minimises ash formation.
For whom: buildings with Ecodesign requirements, installations with subsidies, users prioritising the lowest emissions.
Comparison table: boiler type → recommended PellasX burner
The table below will help you quickly select a pellet burner for your boiler. Find your boiler type in the left column and you will see the recommended burner line on the right.
| Boiler type | Boiler output | Recommended line | Notes |
|---|---|---|---|
| Manual-feed coal boiler (single-family home) | 15–35 kW | Revo or ECOS | Revo — best price; ECOS — if you plan to apply for a subsidy |
| Manual-feed wood boiler | 15–50 kW | Revo or M | Check the door opening dimensions — wood boilers have larger ones |
| Boiler with retort feeder | 15–50 kW | M | Requires an adapter — retort boilers have a different opening than manual-feed |
| Water boiler (multi-family building) | 50–200 kW | M | M line from 50 kW upwards — ideal for district boiler rooms |
| Industrial / steam boiler | 100–750 kW | X | Designed for 24/7 continuous operation, tolerates agri-pellets |
| Ceramic furnace / dryer | 50–500 kW | X | Special adapters for waterless applications |
| New boiler with Ecodesign requirement | 20–100 kW | ECOS | Ecodesign certified, qualifies for the Clean Air subsidy |
Not sure which model to choose? Send us a photo of your boiler’s rating plate and the door opening dimensions — we will select a burner within 24 hours. Ask about selection →
How much does a pellet burner for a boiler cost? Prices, TCO, and subsidies
The price of a pellet burner depends primarily on its output and product line. Below we present indicative gross price ranges (including 23% VAT) for 2026. You will receive an exact quote after contacting our sales department.
Indicative price ranges for PellasX burners
| Line | Output range | Gross price range | Included in the set |
|---|---|---|---|
| Revo | 16–35 kW | PLN 3,500 – 5,500 | Burner + controller + 30 kg hopper |
| ECOS | 20–100 kW | PLN 5,000 – 9,000 | Burner + controller + ceramic combustion chamber |
| M | 16–500 kW | PLN 4,000 – 25,000 | Burner + controller + mounting adapter |
| X | 26–750 kW | PLN 8,000 – 45,000 | Burner + controller + reinforced combustion chamber |
Indicative prices — may vary depending on configuration and the current offer. Please ask for an exact quote.
Total cost of ownership (TCO) — pellet burner vs. other heat sources
Purchasing the burner is not the only cost. It is worth comparing the total cost of heating over a 5–10 year horizon:
- Pellet burner + existing boiler: investment of PLN 3,500 – 9,000 + pellet cost ~PLN 1,200–1,500/t (a 150 m² house consumes 4–6 tons per year = PLN 5,000–9,000/year for fuel).
- New (automatic) pellet boiler: investment of PLN 15,000 – 30,000 + the same pellet cost.
- Heat pump: investment of PLN 35,000 – 60,000 + electricity cost PLN 3,000–5,000/year (depending on COP and tariff).
- Gas boiler: investment of PLN 8,000 – 15,000 + gas connection PLN 5,000–15,000 + gas cost PLN 6,000–10,000/year.
Conclusion: retrofitting an existing boiler with a pellet burner represents the lowest investment cost with moderate operating costs. It is the optimal solution for those who have a working boiler and want to switch to an ecological fuel without major expenditure.
Subsidies — the Clean Air programme 2026
The Clean Air programme enables co-financing for heat-source replacement, including installation of a pellet burner in an existing boiler — provided the Ecodesign requirements are met. Burners from the PellasX ECOS line meet these requirements.
Subsidy levels in 2026:
- Basic subsidy level: up to 30% of eligible costs (max. PLN 66,000 for the entire thermomodernisation investment).
- Enhanced level: up to 60% (annual income up to PLN 120,000).
- Highest level: up to 90% (annual income up to PLN 60,000).
In practice this means that an ECOS burner worth PLN 6,000 may cost you as little as PLN 600 at the highest subsidy level. You can read more about subsidies in our article on pellet boiler retrofitting.
Need a quote for a subsidy application? We will prepare an offer with a breakdown of eligible costs. Request a quote →
What does the installation of a pellet burner in a boiler look like?
Installing a pellet burner for a boiler is a task that an experienced installer completes in 2–4 hours. Below is a brief overview of the steps — you will find a detailed guide in the article Pellet burner for a manual-feed boiler — retrofit step by step.
Step 1: Assessing boiler compatibility
Not every boiler is suitable for retrofitting. We check: the door opening dimensions (minimum 180 x 180 mm for Revo), the depth of the combustion chamber, the condition of the heat exchanger, and the chimney draught (15–25 Pa).
Step 2: Preparing the mounting opening
The burner is installed where the feed door used to be. If the opening is too small or too large, a mounting adapter is used (we supply it with M and X line burners).
Step 3: Installing the burner and the hopper
The burner is attached to the boiler, the pellet hopper (typically 200–500 litres) is connected, and the screw feeder is installed. The hopper is placed next to the boiler — it takes up roughly the same space as the former coal container.
Step 4: Electrical connection and start-up
Connection to a 230 V power supply, controller configuration, ignition test, and combustion parameter adjustment. It is best to entrust the first start-up to an authorised installer — a list of partners is available on the contact page.
A detailed installation guide with photographs and a tool list can be found here: Manual-feed boiler retrofit — step-by-step guide →
Why PellasX and not Kipi, Venma, or Eco-Palnik?
Several brands of pellet burners are available on the Polish market. Here is what distinguishes PellasX:
- Output range 16–750 kW — the widest on the market. Kipi offers up to 100 kW, Venma up to 150 kW, Eco-Palnik up to 200 kW. Only PellasX covers the full range from single-family homes to heating plants.
- 4 specialised product lines — instead of a single model in different sizes, we offer burners designed for specific applications. Revo is optimised for homes, X for industry, ECOS for ecological standards.
- European production — we design and manufacture burners in the EU. Every unit is tested in a combustion laboratory before shipment.
- Technical support from the manufacturer — you are not dependent on a reseller. The PellasX technical department assists with selection, installation, and service directly.
- Remote control — PellasX controllers (in the M, X, and ECOS lines) allow burner control via Wi-Fi from a smartphone.
- Manufacturer’s warranty — a standard warranty on the burner and controller, with the option of extension when installed by an authorised partner.
Detailed brand comparisons are being prepared in our Knowledge base section.
Select a pellet burner for your boiler
Have questions? Not sure which burner fits your boiler? Contact us — burner selection is free of charge.
Order a free PellasX burner selection
Send us:
- ✓ A photo of the boiler’s rating plate
- ✓ Door opening dimensions (width x height)
- ✓ Heated area (m²)
- ✓ Whether you plan to apply for the Clean Air subsidy
We reply within 24 hours on business days. You can also call our technical department directly.
Frequently asked questions
Is every boiler suitable for pellet burner installation?
Not every one. The boiler must have a suitable mounting opening (min. 180 x 180 mm), sufficient combustion chamber depth, and a working heat exchanger. Sectional cast iron boilers are generally not suitable for retrofitting. The best candidates are steel manual-feed boilers with top or bottom combustion. Send us a photo of the boiler — we will assess it free of charge.
How much pellet does a pellet burner consume per season?
A single-family home of 120–180 m² consumes on average 4–6 tons of pellets per year. At a pellet price of ~PLN 1,200–1,500/ton this gives an annual heating cost of PLN 5,000–9,000. Actual consumption depends on the building’s insulation, the temperature set on the controller, and the quality of the pellets.
Can I receive a subsidy for a pellet burner?
Yes — under the Clean Air programme. The condition is the use of a device meeting the Ecodesign standard. From our offer, burners from the ECOS line qualify. We prepare the documentation needed for the application.
How long does it take to install a pellet burner in a boiler?
An experienced installer completes the installation in 2–4 hours. This includes removing the door, mounting the burner, connecting the hopper, electrical installation, and a test start-up. There is no need to rebuild the boiler room or modify the CH installation.
How do I match the burner output to the boiler?
Generally, the burner output should correspond to the boiler output. A 26 kW burner for a 25 kW boiler — that is a correct match. Do not install a burner with significantly higher output than the boiler — the excess energy will not be absorbed by the heat exchanger. A detailed output-selection guide can be found in the article How to choose the output of a pellet burner.
See also
