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Biomass Boilers UK: Cost & Maintenance Guide

Do You Need to Change Your Boiler in the UK?

Consider a biomass boiler instead of a gas boiler. In the recent years it has been becoming one of the most appreciable green heating systems in the UK, so let’s get some clarity about Biomass.

How Do Biomass Boilers Work

Biomass is an organic matter that can be used as an energy source to generate heat for heating systems like biomass boilers. They are considered as a green and renewable energy source since it is derived from flora. Regarding heating systems, the fuel for the biomass boiler consists of wood pellets, chips or logs which are burnt to provide both warmth and hot water. Replacing a gas boiler to a biomass one, that is to say, burning wood, does not, absolutely, mean returning to the past.

Let’s see the main advantages you would gain from biomass boilers:

  • Increased savings: your savings should range from £200 to £1000 per year depending on your fuel.
  • Reduce pollution around you: you will benefit from cleaner air
  • Get incentives: take advantage of the Renewable Heat Incentive (RHI).

Biomass-based heating systems are very efficient and over the years their importance has risen steadily. If you want more information and get up to four tailored quotes from our suppliers, just fill in the form in the sidebar. It’s quick, easy and free!


Like many other ways of producing clean and renewable energy, the biomass boilers also requires an initial investment, which it will be refundable over the years. The costs for a domestic biomass system ranges approximately between £5,000 to £15,000, all inclusive of a 5% VAT, installation, flue and fuel store. The price depends on the fuel used, type and size of the boiler.

With regard to fuel, it is important to mention that not only the different types of fuel influence the final cost, there are other factors to consider. If you have a spacious area to store the fuel, you can keep the cost down by purchasing a larger amount of fuel at once. Furthermore, manually fed log boilers can be a little bit cheaper than the automatic ones.

For example, if you are able to store several tonnes of pellets, in many parts of UK you may spend about £220 per tonne.

As far the Return on Investment is concerned, considering a biomass boiler is quite similar to a printer. Although a printer would seem to be expensive, you must keep in mind the price of the cartridges. Therefore, a biomass system could be expensive at first but it will be cheaper in the long run compared to other heating systems.

The Incentives

As mentioned before you can benefit from the Renewable Heat Incentive (RHI) when considering to install a Biomass-based heating system.

It was set up with the goal of encouraging people to install different types of renewable sources of energy among householders, communities and companies by offering them financial incentives.

It is the first in the world of its kind and the UK Government expects it to reach at least 12% of heat generation coming from renewable energy sources by 2020. The domestic renewable heat incentive was launched in April 2014, covering England, Wales and Scotland.

3 Amazing Things You Will Notice Right Away

  • Low emissions
  • Renewable source
  • Totally different from stoves

If it is true that burning wood produces carbon dioxide, it is also true that the quantity absorbed when the plant grows is equivalent. This is the reason why the Biomass-based heating systems are considered green as they use renewable energy.
Besides, the biomass boilers are different from stoves because the latter is just as capable of heating a single room, and usually, there are other types of heating systems as well.

 Biomass _boilers _quotes

Service and Maintenance

Many of the modern heating systems based on biomass require little maintenance because they are fully automated, also in cleaning. However as mentioned before, once a year you need to manually clean the ashbin. Note that if the system has no automatic features, ashbin cleaning is requested every week. A regular inspection of the whole system by qualified technicians should be done at least once a year.


Pellets, Chips, or Logs?

This is usually the first question asked when considering biomass boilers. Chips due to their high potential to heat a large number of homes or businesses, not just one, are not the best choice when it comes to heating a stand alone home. You should instead choose between pellets and logs for your domestic system according to many factors.
Both of them are efficient up to about 90% even if logs require more work than pellets, as you need to refill the boiler manually by hand. Besides, using logs you need a larger place to store them because boilers burn them faster than it would pellets even though pellets are more expensive.
Concerning pellets, they are much easier to use because they run automatically as in the same way as traditional boilers. You just should clean ash once a year!

Are Biomass Boilers Suitable for UK Temperatures?

Certainly, they are. You just need to take into consideration that colder temperatures require more fuel, even if many of the most modern systems are very efficient independently from temperature changes. It does not matter if you use pellets or logs.

How Will My Fuel Be Delivered?

Fuel can be supplied easily to many parts of the UK, in some cases, you may have to wait a little longer for delivery. Again, it does not matter if you use pellets or logs. If you are in need of a Biomass boiler, fill in the form to get up to four tailored quotes from our suppliers.


To apply for the RHI you must do that on Ofgem’s website.

Do you live in Scotland? Find out more incentives here!