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Hot air generator 150–750 kW · LASCO LATherm wood chips

A fully automatic, mobile hot air generator for wood chips – for drying and for heating halls, greenhouses and stables.

How LATherm works
LASCO LATherm H750: a dark grey container with yellow-green panels, two large round hot air outlets on the side and an ash box on wheels

150kW–750kWOutput range · three sizes

Made by LASCO in Austria

Sold, installed and serviced in Sweden by Biotherm Heat AB

01Mobile

Set it up wherethe heat is needed.

The units are built as mobile all-in-one containers. They are ready to use and can be set up at different locations.

A LATherm wood chip unit standing outdoors by a hall of timber and green fabric, with a chimney and a hot air hose into the hall
Output
150–750 kW
Fuel
Wood chips
Operation
Fully automatic
Design
Mobile container

02How it works

Cold air in.Hot air out.

The fan draws in fresh air and passes it through the heat exchanger, where the flue gases heat it. The heated air is 100 % emission-free, according to LASCO.

LASCO's cutaway of a wood chip unit in two sections. On the left the air side: cold air fan, heat exchanger, cyclone, combustion, hot air outlet and ash box. On the right the fuel side: storage bunker with wood chips, discharge auger, combustion chamber with step grate, ash auger and flue gas fan with chimney
Air side
  1. 1
    Cold air fanDraws in fresh air.
  2. 2
    Heat exchangerThe flue gases heat the air in a flue gas/air heat exchanger.
  3. 3
    Cyclone separatorA cyclone on the H150 and H250, a multi-cyclone with flue gas recirculation on the H750.
  4. 4
    Heat exchanger cleaningAt the bottom, below the heat exchanger.
  5. 5
    Hot air outletFrom here the hot air is carried on, for example in a hot air hose.
  6. 6
    Ash boxThe ash collects here.
Fuel side
  1. 7
    Storage bunkerThe day hopper holds 5.3 m³ on the H150 and H250. From 750 kW the fuel container is mounted externally.
  2. 8
    Discharge augerCarries the wood chips from the bunker to the combustion chamber.
  3. 9
    Combustion chamberThe combustion has been completely redesigned, with fully automatic fuel detection.
  4. 10
    Step grateA moving step grate in the combustion chamber.
  5. 11
    Ash discharge augerCarries the ash out.
  6. 12
    Flue gas fanThe induced draught fan draws the flue gases to the chimney.
Max air flow · H750

03Air and control

Lots of air.High temperature.

The H750 delivers up to 30,000 m³/h. The flue gases heat the air in the heat exchanger, with no water in between – which is why the outlet temperature is very high compared with water-led systems.

Touchscreen
B & R, on the whole wood chip range
Output
50–100 %, variable
Weekly programme
Monday–Sunday
Metering
Hours run, output and heat quantity (calculated value)
Thermostat
Remote thermostat connection
The fuel
Fully automatic fuel detection

Options: remote maintenance, also via mobile phone, variable output control and a room thermostat for external start and stop. For the H150 and H250 also a pressure-resistant, speed-controlled radial fan, lambda control and a filling funnel – the H750 has lambda as standard.

04Applications

Dries.Heats.

LATherm dries crops and firewood, and heats many kinds of buildings – quickly, easily and cost-effectively, according to LASCO.

Drying

  • Hay

    When the weather is poor, the unit takes over the hot air supply, so hay can be dried in almost any weather.

  • Round bales

    With a LATherm unit the drying time is shorter and the dryer more effective.

  • Hops

    Dried in thin layers on several floors. Correctly conditioned drying air decides the quality.

  • Firewood

    Fresh wood dried quickly to below 20 % moisture goes from 2 to up to 4 kWh/kg.

  • Maize and cereals

    Maize drying needs a very high output.

  • Special drying

    Herbs, special crops, waste and raw materials.

Heating

  • Greenhouses

    For vegetables and flowers.

  • Stables

    For example hen houses and turkey sheds, with the hot air hose in the roof.

  • Production halls and warehouses

  • Sports and trade fair halls

  • Event and festival marquees

    Short set-up times and affordable fuel.

  • Construction sites

    Drying and heating on the building site.

05Versions

Three sizes.

From 150 to 750 kW, all in mobile containers. On the H750 the wood chip store is in an external container.

LASCO LATherm H150 or H250: a container with the flue gas fan on the roof, an elliptical hot air outlet and an ash box

H150 and H250

All-in-one container with a 5.3 m³ day hopper and a cyclone.

Output
150 and 240 kW
Air flow
Up to 11,500 m³/h
Weight
Approx. 2,350 and 2,500 kg
LASCO LATherm H750 with two round hot air outlets, a touchscreen and the text LA 750 on the side

H750

All-in-one container with an external wood chip store and a multi-cyclone with flue gas recirculation.

Output
750 kW
Air flow
Up to 30,000 m³/h
Weight
Approx. 4,500 kg

Three models

Technical data.

ModelH150H250H750
Rated heating outputmax. 150 kWmax. 240 kWmax. 750 kW
Fuel thermal outputmax. 160 kWmax. 250 kWmax. 830 kW
Max. air flow m³/h11,500radial fan11,500radial fan30,000
Max. heating at max. air flow50 °Caxial fan, 8,500 m³/h32 °Cradial fan, 11,500 m³/h80 °Caxial fan, 8,500 m³/h67 °Cradial fan, 11,500 m³/h89 °Cat 26,000 m³/h
Max. intake temperature50 °C50 °C–
Wood chips to ÖNORM C4005C2 · P16 · F15 · M25 · A3.0C2 · P31 · F15 · M25 · A3.0
Consumption wood chipsapprox. 0.2 m³/happrox. 0.33 m³/happrox. 1 m³/h
Fuel storeDay hopper, 5.3 m³External container with extraction system
CombustionMoving step grate
IgnitionAutomatic
Flue gas cleaningCycloneMulti-cyclone with flue gas recirculation
ControlB & R touchscreen, output 50–100 % variable
Power supply400 V (3P+N+PE)
Flue gas pipe, Ø mm200200250
Hot air outlet, Ø mm600700elliptical2 × 900
Weight without fuel kgapprox. 2,350approx. 2,500approx. 4,500
DesignMobile all-in-one containerMobile all-in-one container, external wood chip store

Data according to LASCO's brochure (version C, 2025), subject to change. The H250 delivers max. 240 kW. LASCO states the air flow in Bm³/h. A dash (–) means the figure is not given in the documentation.

Pöndorf · Austria

06The manufacturer

LATherm is made by LASCO in Austria.

LASCO Heutechnik GmbH is a family business that has researched, developed and manufactured machines in Austria since 1987 – in forestry, drying, hay and heating technology.

In Austria since
1987
Production and storage area
18,000+ m²
Fields
4
Years of hay drying in Europe
30+
Biotherm Heat ABVästerås · Luleå

In Sweden

Biotherm Heat is LASCO's agent in Sweden.

We sell, install and service the LATherm units and help you choose the right unit and the right size – for what needs heating or drying and the fuel you have.

More ways to hot air

For pellets or permanently installed.

Need water-based heat from wood chips? See the wood chip boilers, 20 kW–4.6 MW

Free heat-load calculation

Let's calculate your heating.

Tell us what needs drying or heating – and where – and we will calculate the output and the whole plant.

Call +46 (0)921-578 00

info@biothermheat.comVästerås · Luleå

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