Domestic Biomass Boilers

Domestic Biomass Boilers

Windhager Biomass Boilers

Commercial Biomass Ltd is a trained and authorised dealer for Windhager biomass boilers. Windhager boilers can run on chip, pellet, miscanthus, or reclaimed timber, such as chipped pallets. The Windhager domestic biomass boiler range features solid engineering, while maintaining high efficiency, low emissions, and internet-accessible touch screen user control. All their boilers are Boiler Upgrade Scheme compatible.

BioWIN2: 3 to 33 kW

High-performance domestic biomass boilers, with touch panel control, accessible via your phone or tablet. The boiler comes with a seven year manufacturer’s limited warranty for added peace of mind.

BioWIN XL 10 to 60kW

Fully automatic biomass boiler cascade up to 60kW output for larger homes and businesses with touch panel control, accessible via your phone or tablet.

LogWIN 13 to 50kW

Log gasification boiler for logs up to 500mm (18″) long. Stainless steel combustion chamber for longevity and reliability. Touch panel control and remote access.

ETA Heiztechnik Biomass Boilers

Commercial Biomass is a registered and certified installer of ETA biomass boilers, the UK’s bestselling biomass boilers. These domestic biomass boilers can burn either wood pellets, chipped wood, logs, or even miscanthus (a type of elephant grass), while some can burn a combination of these fuels. All ETA boilers are  Boiler Upgrade Scheme  compatible, which means they are eligible for government funding. ETA wood burning boilers give outputs from 7kw to 500kw. A 7kw boiler would suit a small house and a 500kw boiler would provide enough heat for a large factory building. These biomass boilers are ideal where heating needs to be economical, environmentally-friendly and automatic.

ETA PU 7 TO 15
ETA PC 20 to 105 biomass boiler, pellet fuel
ETA SH biomass boiler log
ETA eHack biomass boiler

ETA PU 7 to 15

The ideal pellet boiler for renovations or new builds of single family homes and apartment buildings.

ETA PC 20 to 105 kW

A compact pellet boiler for renovations or new builds of larger residential buildings and office spaces.

ETA SH Log boiler & SH Twin Pellet addition

Biomass log boilers are perfect for those with a supply of logs, whilst the twin option offers the flexibility of two fuel types.

ETA eHack & Hack wood chip boilers

Wood chip biomass boilers with A+ energy rating and a burning efficiency of up to 94.6%.

Hargassner Boilers

Hargassner Biomass Boilers are renowned for their exceptional efficiency and sustainability. With cutting-edge technology and a commitment to eco-friendly heating solutions, Hargassner boilers provide reliable warmth while reducing environmental impact.

Nano PK 6-15kW

Discover the economical compact from its best side and in 3D. Move the Nano-PK 6–15 kW in all directions as desired.

Nano PK 20-32kW

This low-temperature boiler is especially suitable for the low to medium output range and can also be optimally used where space is limited.

Nano PK Plus Range

Products from Hargassner combine the highest quality,
expertise and decades of proven technology. As a biomass
pioneer, Hargassner researches and develops the future of
heating with a keen sense of the environment.

Klover Biomass Boilers

Klover offers a practical and very stylish way to heat your home with its Belvedere Pellet Stove with water output. Also available is the Klover Smart Stove, which is ideal to replace an old AGA or Rayburn.

Klover additionally offers a range of stylish inset fires and room heaters. These aren’t eligible to claim the BUS grant, but are a great way to heat your home with wood pellets or logs, with wet and dry options available.

Klover Belvedere 20

Klover Pellet Stoves

BUS grant compatible pellet stoves with outputs of 13.9kW, 17.1kW and 21.2kW. Available with optional instantaneous domestic hot water module.

Klover Smart Stoves

A stylish, energy-efficient alternative to AGAs, the Smart Stove contains a MCS-certified wood pellet boiler with built-in fuel hopper that holds 30kGs of pellets.

Klover Inset Fires

With Italian styling, this log burner is super efficient, controllable, and easy to light. Bringing the traditional wood burner with backboiler right into the 21st Century.

Heizomat Boilers

With over 40 years of industry expertise, Heizomat has become a trusted name in the field. Since their establishment in 1962, they have successfully designed, manufactured, and installed numerous boiler and fuel-handling systems worldwide. Heizomat’s extensive experience and commitment to excellence ensure that their products are of the highest quality. In fact, some of their boilers, installed three decades ago, are still operating efficiently today


The very special features of this boiler series are that the high temperature combustion chamber is integrated into the boiler body and thus the radiant heat of the fireclay bricks is diverted to the boiler water.

The moduating boiler has combustion chamber cleaning with an ash removal paddle and automatic cleaning of the heat exchanger tubes with de-ashing auger.
The possible operating modus is continuous or ignition with glow bar automatic ignition.


  • Woodchips
  • Pellets
  • Igniscum
  • Sawdust
  • Wood shavings
  • Briquettes

The diversity of the organic fuels knows practically no limits. To use this is the task of this boiler series.

A round cyclone combustion chamber with counter-rotational turbine air supply (rotation combustion) stands for a high degree of efficiency and complete burning of the fuel. The primary air supply is undertaken via the laterally set high temperature cast iron blocks. Everything which sluggishly degases or burns is slowly moved with chain shovels over the boiler floor to the ash discharge shaft and thereby burnt optimally.


  • Woodchips
  • Pellets
  • Igniscum
  • Straw
  • Rape straw
  • Miscanthus