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Which Are the Best Biomass Boiler Manufacturers?

Becky Mckay
By: Becky Mckay
Updated: 17th June 2022

Best Biomass Boiler Manufacturers

The best biomass boiler manufacturers offer heating systems that will make your home more efficient and reduce your impact on the environment. All while reducing your heating bills.

To find the right biomass boiler for your home, we need to compare the best biomass boiler manufacturers.

What is a biomass boiler?

A biomass boiler burns plant-based materials, such as wood pellets and logs, to provide central heating and hot water. Burning wood is a carbon neutral process which only releases the carbon absorbed by the tree during its lifetime.

There are many reasons to heat your home with a biomass boiler:

  • Sustainable fuel source
  • Carbon neutral
  • Highly efficient heating
  • Payments through Renewable Heat Incentive (RHI)

You can find out more about biomass heating systems in What is a Biomass Boiler?.

Which is the best biomass boiler?

The best biomass boiler is one that will keep your running costs to a minimum. If you live near a wooded area with free access to wood logs then a log-burning biomass, like the Windhager LogWIN Premium, is a great option.

A great feature of Windhager LogWIN Premium Touch biomass boilers is that they boast a large combustion chamber. This allows them to store more fuel. So you won't have to worry about refilling it so often.

While you could heat your home for free with wood logs, they take up a fair amount of space. So if you're looking to save space then consider the alternatives: wood chips or pellets. One of the best wood pellet boilers is the Viessmann Vitoligno 300-C, which will automatically refill the boiler with fuel when needed – saving you a job.

Comparing biomass boilers

Comparing the best biomass boilers to find the right model for your home means taking a look at the following:

  • Fuel (chips, logs or pellets)
  • Output rating
  • Physical size
  • Efficiency
  • Cost
  • Warranty


Biomass boilers can heat a home by burning wood logs, pellets or chips. Which of these fuels is best suited to your home will depend on price, access to a supplier and how much storage space you have available. All biomass boilers have to be stored at your property but wood logs are the largest.

Should you live in the countryside near a wooded area then you could potentially find wood logs yourself and heat your home for free

Output rating

The output rating is an important consideration to make when having any type of boiler installed. Measured in kilowatts (kW), the output rating shows the power of the unit. The higher the output rating, the more powerful the boiler.

Getting the output rating right is essential, otherwise your boiler either won't be able to meet demand or lead to increased heating bills.

A professional heating engineer is the best person to discuss your options in terms of biomass boiler output.

Physical size

Biomass boilers tend to be larger than conventional gas and oil boilers. Plus, like oil, the fuel needs to be stored onsite which will take up even more space.


The best biomass boilers have a similar efficiency level to gas and oil boilers – over 90%. This means that almost all of the fuel is converted into heat for your home.

However, unlike the waste from gas and oil boilers which is emitted into the atmosphere – and contributes to climate change – the ash left behind by burning biomass fuels can actually be used as fertiliser. So, in that sense, you would be using 100% of the fuel that you purchase.


After the installation of a biomass boiler, you want to know that you're protected in the unlikely event that something goes wrong. This is where the boiler warranty comes in and it's worth comparing the length of the warranty as well as what's covered during that time.


Last but not least is how much the biomass boiler costs. Which, in many cases, is likely to be the deciding factor.

Biomass boilers are typically more expensive than gas and oil boilers both in terms of the price of the boiler itself and the installation. However, the cheaper running costs and RHI payments could see you earn much of this initial investment back over time.

Plus, until March 2021, you could receive up to £5,000 towards the cost of installing a biomass boiler through the Green Homes Grant scheme.

Best biomass boilers and prices

The best biomass boiler manufacturers include Froling, Grant, Viessmann, Warmflow and Windhager.

The biomass boilers by these manufacturers include outputs up to 72 kW and can be fuelled by either wood chips, logs and pellets.

Best Biomass Boiler Manufacturers Viessmann Froling Windhager Grant Warmflow
Model Vitoligno 300-C T4e LogWIN Premium Touch Spira Zeno
Fuel Type Pellets Chips Logs Pellets Pellets
Output 2.4 - 48 kW 5.9 – 250 kW 13.4 - 50 kW 5 – 72kW 4 – 18 kW
Maximum Efficiency 95% 95% 92% 97%
Potential Cost £9,000 – £10,000 £8,000 – £14,000 £7,000 – £10,000 £11,000 – £12,500 £7,000 – £14,000

Grant Spira

The Grant Spira is a condensing biomass boiler that runs on wood pellets. With a range of outputs from 5 kW right up to 72 kW, there’s an option for homes of just about any size and it doesn't take much getting used to.

  • Fitted with a pellet hopper and feed auger which automatically supplies pellets to the boiler when the heating is turned on
  • Self-cleaning heat exchanger which greatly reduces the chance of a fault developing
  • Free up some space around your home by installing the boiler in garage, out-house or specifically designed Grant SpiraPod boiler housing
  • Approved by DEFRA under the Clean Air Act

Should your heating demands increase over time then an additional Grant Spira boiler can be paired with the existing one. So, two 36 kW Grant Spira biomass boilers can be paired to make a 72 kW heating system. This will allow the heating system to meet higher demand for heating and hot water.

Compare Grant Biomass Boiler Prices & Reviews.

Froling T4e

Froling T4e biomass boilers are fully automatic and flexible heating systems that can burn both wood pellets and chips.

  • Ash is automatically removed from the combustion chamber and heat exchanger
  • Well insulated to reduce heat loss
  • Designed for low energy consumption to keep your bills to a minimum
  • Boasts a 7" touchscreen LCD display
  • Range includes models with output ratings ranging from 20 kW up to 250 kW meaning there's an option for most property types

A warranty of up to 5 years is available with the installation of a Froling T4e biomass boiler.

Compare Froling Biomass Boiler Prices & Reviews.

Windhager LogWIN Premium Touch

The Windhager LogWIN Premium range of biomass boilers includes five different units with outputs ranging from 13 kW up to 50 kW.

  • Designed to be fueled by wood logs
  • Ash is collected in an attachable ash tray which is quick and clean to remove
  • Can store up to 64kg of wood
  • Includes a stainless steel combustion chamber to increase the longevity of the boiler

Available with a 7 year warranty as standard which will see that you're well covered by Windhager after the installation.

Compare Windhager Boiler Prices & Reviews.

Viessmann Vitoligno 300-C

The Viessmann Vitoligno 300-C range of biomass boilers burn wood pellets includes models with nominal output ratings of 8 kW, 12 kW, 18 kW and 48 kW.

  • Highly efficient operation of up to 95.3%
  • Flexible choice of locations for the unit to be installed – it's also compact in size
  • A user-friendly digital text display screen
  • You'll only ever need to empty out the ash box once or twice each year
  • Take control of the heating system from wherever you are by downloading the Viessmann App onto your smartphone

Viessmann biomass boilers can even be paired with solar thermal heating to further increase the renewable credentials of your home.

Compare Viessmann Biomass Boiler Prices & Reviews.

Warmflow Zeno

The Warmflow Zeno runs on wood pellets and modulates its output from 4-12 kW. This ensures energy usage is always kept to a minimum.

  • Integrated 120kg wood pellet storage
  • Warns you when the supply of wood pellets is beginning to run low
  • High levels of efficiency and Class 5 emissions level
  • User-friendly controls
  • MCS approved
  • Quiet Mark accredited

After the installation of a Warmflow Zeno biomass boiler, you will be covered by a 5 year parts and labour warranty.

Costs to install a biomass boiler

Boiler installation costs vary greatly depending on the model, complexity of the installation and rates charged by the installer. As there are so many variables, it's possible for a biomass boiler to cost anywhere up to £10,000.

While these initial costs can seem daunting, you don't get the full picture without looking at the long term running costs.

Biomass fuels can be cheaper than even gas and oil. So, depending on how much you pay per tonne of wood chips, pellets or logs, you could be saving money heating bills.

Fuel Potential cost per kilowatt-hour (p/kWh)
Chips 2.8
Logs 4.9
Pellets 4
Gas 4.8
Oil 6
Electricity 13.4

As well as lower heating bills, you could receive payments through the Renewable Heat Incentive (RHI) for generating your own renewable heat with a biomass boiler. RHI payments are made quarterly over a 7 year period. For applications received between July 2020 and September 2020, you'll receive 6.97p/kWh of heat generated.

Find out more by reading our guide to Biomass Boilers Prices & Running Costs.

Is a biomass boiler right for you?

Heating your home with a biomass boiler is very different to conventional gas and oil boilers. This is because they're often larger, burn a solid fuel and require a different type of maintenance because ash is left behind when burning biomass fuels.

Anyone with an oil boiler will be familiar with storing fuel – something that isn't necessary with gas boilers. So, as well as the boiler, space is also needed to store the fuel. And you'll need to stay on top of ordering in more fuel.

It's often thought that planning permission is essential when installing a biomass boiler. However, it's only needed if you live in a listed building or plan to install the boiler externally in an out-house.

Not sure if a biomass boiler is right for your home? Get the answer in our guide.

Get quotes for a biomass boiler

Once you've found the best biomass boiler for your home then it's time to find an installer. To make sure you find the right person for the job at the most competitive price, we highly recommend comparing quotes.

By completing our simple online form, you will get free quotes from up to 3 local biomass boiler installers. There's no-obligation to accept these quotes and once you have them you'll be in a position to compare them. Then you can go ahead with the installation of your biomass boiler confident that you're getting the best deal possible.

Interested in a biomass boiler?


Get free quotes from a local heating engineer now


Becky Mckay

About the author

Becky Mckay

Becky is one of our home heating and renewable energy experts and has a wealth of experience writing about the world of heating.

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