Wood chip boilers from 20 kW to 4.6 MW.

The price is calculated case by case, because it depends on the output, the type of boiler, the fuel store and feed system, the accumulator tank, the boiler room and how much of the installation we do. That is why we start with a free heat-load calculation and then send a quotation for your plant.

The heat itself costs approx. SEK 0.30/kWh with bought-in chips and SEK 0.15–0.20/kWh with chips from your own forest.

We work that out in the heat-load calculation. Our wood chip boilers range from 20 kW – Multiauto in seven versions up to 200 kW – to 4.6 MW with four IDRO 1,150 kW in cascade.

Count on roughly two cubic metres of chips per kW of boiler output a year, up to three with poorer chips. A 100 kW boiler therefore uses around 200 m³ of chips a year. Actual consumption depends on the quality and moisture content of the chips.

It depends on the output and how often you want to fill it. A spring agitator holds up to 180 m³ and is 2–6 m in diameter, usually 3 or 4 m. A scraper-floor store holds up to 500 m³ – roughly a year's chips for a 250 kW boiler.

The store can also be built into a heating plant, or be a carport where the chips stay dry.

Wood chips of size P16S and P31S (G50+). The PelleTech boilers handle up to 40 % moisture content, Multiauto 30–40 % depending on fuel. Coarser chips work with larger screws, and the BU wood chip burner handles chips up to P45S.

For extremely moist chips there is the Biotherm burner, which also burns horse manure with up to 60 % moisture content.

Yes. Multiauto burns wood chips and pellets as well as logging residues, sawdust, wood shavings, peat and residues, and firewood can be added by hand together with chips or pellets. IDRO also burns pellets, bark, logging residues, sawdust, waste wood, energy crops, residues and crops – with bio-oil as backup in the same boiler body.

A boiler room – an existing one, a container or a ready-built heating plant – a chip store with a feed system, an accumulator tank of around 20–30 litres per kW and a chimney. The feed system needs a sealed rotary valve and a sprinkler against burn-back, which is required in Sweden.

We design in 3D and 2D with plumbing and electrical drawings and take care of installation, commissioning and training – or local plumbing and electrical contractors install to the drawings.

Yes, if it is an industrial boiler for hot water, steam or thermal oil. The PelleTech BU wood chip burner, 200 kW–2.2 MW in eight sizes, connects to the boiler and replaces the oil or gas burner. We supply the fuel store and the feed system around it.

Yes. We build heating plants of 200 kW–2 MW in our own workshop: standard, timber-built, container plants or Biobox ALL INclusive with a built-in store of 17–30 m³. They are built around PelleTech IDRO or AERO and tested and fine-tuned before delivery.

For mobile hot air there is LATherm wood chips in a container, 150–750 kW.

Yes, as construction and rental heating: 200–1,000 kW, water-based heating or hot air, the whole plant or parts of it. The agreement is adapted to the installation, the rental period and the availability of fuel.

The boiler ignites, feeds, cleans itself and discharges the ash automatically. You top up the fuel and empty the ash. A major service is needed once or twice a year, preferably with a service agreement. We service plants all over Sweden, including other makes.

Look at the grate – a moving stepped grate handles wetter and dirtier chips than a fixed one – at the feed system and burn-back protection, at automatic cleaning and ash discharge, and at who provides service, documentation and support after delivery.

Plan the fuel logistics as well: how the chips are delivered, stored and fed to the boiler.