Stûv pellet stoves are designed and manufactured in Belgium, in the heart of Europe, out of conviction and a concern for quality. With 90% efficiency, extremely low pollutant emissions and a voluptuous flame sculpted by patented technology, the sP10, sP20-B and sP20-S pellet stoves combine the pleasure of fire, performance and aesthetics.
Wood pellets are a type of fuel made by compressing sawmill waste, such as sawdust and wood shavings. This manufacturing process produces small, very dry and dense cylinders with a high calorific value. Pellets do not require the addition of glue or binder, as the compressed lignite from the wood ensures their cohesion.
Pellets need air to burn!
This air can be extracted in two ways:
Combustion generates flue gases, mainly CO2 , which leave the stove at over 250°C. These gases need to be assessed by a flue capable of 'drawing' them naturally out of the building. To allow the fumes to rise, the ideal flue is vertical, sufficiently high, thermally insulated and covered with a cap: it has a round cross-section with a suitable diameter, and a smooth inner wall. The flue to the roof outlet should preferably be installed inside the house, so that it is not cooled by the outside air. If the flue is outside, it should always be insulated. Elbows are possible, but preferably in the low section. The flue must always have a certain slope. Consult your HETAS-approved installer: they will be able to size the flue and ensure correct operation whatever the weather conditions. In the UK, all solid fuel and biomass appliance installations must comply with Building Regulations Approved Document J. A HETAS-registered engineer can self-certify the installation without the need for a separate Building Control application.
Located at the top or bottom of the stove, the combustion chamber of Stûv pellet stoves heats solely by natural convection and radiation.
The natural convection heating system eliminates the need for a blower. This, combined with the rising burner feed, makes the appliance particularly quiet.
Stûv pellet stoves have been designed with longevity in mind. With regular maintenance, you'll be using it for many years to come. All the parts that need replacing are easily accessible, which will reduce the time required for servicing. Aesthetically, Stûv pellet stoves have a sober, timeless design, which is also a factor of durability.
Generally speaking, pellet stoves are more efficient than wood stoves, even when the latter have a very high efficiency like the models designed by Stûv (80% on average). Stûv pellet stoves also exceed the EcoDesign standard — mandatory for all new appliances sold in the UK since January 2022.
What have our designers achieved? Pellet stoves that emit almost 1,000 times fewer fine particles than an open fire, and 240 times fewer than an old-generation stove, with an efficiency of 90%.
These exceptional results were highlighted in a comparative study carried out by Test Achats (a Belgian consumer association) (sP10), which underlined "the total absence of fine particles due to the complete combustion that takes place thanks to the design of the burner conceived for the appliance" and "the systematic efficiency of over 90%, whatever the selected output".
And if you want to be able to modulate the heat as you like for maximum comfort, then the pellet stove - with its thermostatic operation - offers a whole host of advantages!
Standalone pellet stoves — as room heaters — are not currently eligible for the Boiler Upgrade Scheme (BUS), which applies specifically to biomass boilers for central heating. However, the installation of qualifying energy-saving equipment, including certain biomass heating systems, may attract 0% VAT rather than the standard rate — consult your installer to confirm eligibility for your specific situation.
In Scotland, the Home Energy Scotland scheme offers separate grants and interest-free loans for eligible renewable heating improvements. In Northern Ireland, the NI Sustainable Energy Programme provides equivalent support. Funding criteria and amounts change regularly — your Stûv dealer can advise on current incentives in your region.
Heating power, recharging frequency, noise level, environmental impact, maintenance, customisation... these are all criteria to be taken into account and discussed with a HETAS-registered installer:
Power: make sure your heater is the right size. An 8kW output will be sufficient to heat a well-insulated home efficiently. Under-use of a stove that is too powerful can lead to clogging and maintenance problems, which is why it's so important to make the right choice.
Noise: are you worried about the noise of the blower and falling pellets? The sP10, sP20-B and sP20-S - and the sP20-in insert fire - use natural convection and radiation for virtually silent operation. The upward-flowing burner also eliminates the rattling noise typically associated with pellet delivery .
Aesthetics and flexibility: The sP10 features a pivoting head to direct the glass and heat radiation. The sP20-B and sP20-S feature a wide curved glass at the base. And for projects where the appliance needs to sit within an existing chimney breast or bespoke alcove, the sP20-in brings the same technology in a fully integrated format. In all cases, the flame is shaped by the Flower Burner©, Stûv's patented burner .
Autonomy capacity: take into account refuelling intervals. The size of the pellet tank is important in determining how long the stove can operate before refuelling is necessary. The sP10 and sP20S have a tank that guarantees over 10 hours of heating at maximum capacity or 30 hours at minimum capacity.
Ecological aspects: limit your environmental impact. With their extremely low emissions of pollutants and high efficiency, Stûv pellet stoves have succeeded in setting themselves apart. This performance has earned the sP10 the Red Dot Award 2016 and the sP20-B the Red Dot Award 2025.
Maintenance: save time and energy with features designed to make cleaning and maintenance easier. Equipped with an ashtray for easy ash removal, Stûv pellet stoves are worry-free to maintain.
Smoke Control Areas: many UK towns and cities — including most of London and major urban centres — are designated Smoke Control Areas (SCAs) under the Clean Air Act 1993. In a Smoke Control Area, you can only use a DEFRA-exempt appliance. Pellet stoves benefit here: DEFRA-approved appliances are designed to produce a cleaner burn through better control of airflow. Their automated combustion and consistent fuel quality make them far easier to operate within emissions limits than wood-burning stoves. If you live in a Smoke Control Area, you must use a DEFRA-approved stove or burner. Check whether your Stûv pellet stove appears on the DEFRA exemptions list, or ask your HETAS installer to confirm compliance before purchase.
For optimum use of pellet stoves, the pellets must meet a set of criteria in terms of size, moisture content and ash content. So make sure you buy pellets with ENplus A1, DINplus and NF high performance quality certification. It is also essential to generate as little dust as possible during transport and storage, to avoid clogging the appliance when the pellets are poured in. So avoid crushing the bags, keep the pellets in their original bag and store them in a dry place.
For more advice and information on quality standards, see our blog post.
The Stûv pellet range now includes a built-in model: the sP20-in brings the same technology as the sP20 stoves - the same patented Flower Burner© flame, the same virtually silent operation, the same Stûv Pellets app - in a format designed to fit within an existing chimney breast or a bespoke alcove. The appliance disappears into the architecture. Only the fire remains visible.
Discover the Stûv sP20-in pellet insert fire (Soon)
To keep your pellet stove in good condition, it's important to carry out simple maintenance tasks every day, and a more thorough cleaning once or twice a week. Hand over to a professional for an annual check-up.
The cold hand mechanism opens and closes the glass door.
Every day: use the ash removal control to activate the shaker at least 10 times before each ignition (sP10). Note that the sP20S model allows automatic ash removal using a tilting grate each time the appliance is switched off and after 6 hours of operation. Clean the glass with a soft cloth slightly dampened with a glass cleaner, triple zero steel wool or a damp cloth dipped in ash (an ecological and effective solution), and wipe the metal parts with a dry cloth.
Once or twice a week: remove the ashes, make sure there are no deposits in the ash pan and thoroughly clean the combustion chamber with a hoover.
Once a year or when the message "contact the after-sales service" appears: call a professional approved by Stûv to service your pellet stove. He will sweep the stove and check the condition of the seals, moving parts (locks, hinges, dampers, bearings) and the air supply duct.
If a component needs replacing, spare parts can be obtained from the installer and do not require dismantling of the set.
For everything you need to know about maintaining your pellet stove, read our blog post.
Every day: Clean the glass. The high-quality combustion of the Stûv wood-burning insert ensures that the glass does not get very dirty, especially if dry wood is used. However, it will be necessary from time to time to remove the slight accumulation of dust using steel wool 000 or a cloth (Avoid any corrosive products!). A quick job to help your glass look like new again.
Benefit from automatic ash removal! The automatic ash removal system with tilting grate makes it easy for you. The mechanism is activated each time the appliance is switched off, and after 6 hours of continuous operation with a 15-minute pause (or 25 minutes including the flame extinguishing phase). What's more, the large capacity of the 5-litre ashtray provides a substantial autonomy of 170 hours (based on 8 hours' use per day at 10 kW), reducing the frequency with which the ashtray needs to be emptied. This combination of features simplifies ash management, making the use of your Stûv more pleasant and less restrictive over the long term.
Every year or every 2000 hours, it is essential to call in your installer to clean the extractor and exchangers, check the pressure, check the seals and carry out any other necessary work (updating the software, recalibrating the flow, updating the hour meter).
Chimney sweeping : Stûv also recommends sweeping the flue at least once a year. Consult the regulations in force in your country/region.
In-depth maintenance: After 2 or 3 seasons, your installer should also carry out in-depth maintenance, replacing the seals. This operation does not require the decor to be dismantled.
Consult our network of authorised dealers and installers near you.
Please note that our dealers also provide after-sales service. Stûv guarantees the availability of spare parts for 10 years and offers a free extended warranty.
Quality guarantee: Stûv pellet stoves are designed and manufactured in Belgium.
Guaranteed performance: Stûv pellet stoves are certified to be well below emission standards for fine particles and carbon monoxide, with emission thresholds well below current guidelines for low-pollution combustion and higher efficiency than required by all rules and regulations. The sP10 has also won the prestigious Red Dot Award Product 2016, which assesses products on the basis of criteria such as innovation, functionality, sustainability and ecology.
Design guarantee: Stûv designs products where form follows function, with timeless aesthetics and silent combustion.
After-sales service: Stûv has a network of authorised dealers providing after-sales service. Stûv guarantees the availability of spare parts for 10 years. For all these reasons, Stûv offers a free extended warranty.
