Firebull S6 – convection stove with a glass door

Firebull S6 – designer convection stove with a glass door for stylish cabins

At a glance

The stylish Firebull S6 wood-burning convection stove combines substantial heating output of 4–11 kW with the unmistakable atmosphere of a real fire. It reliably heats spaces up to 230 m³ and its 80.1% efficiency significantly reduces fuel consumption. Elegant glazing makes it a striking feature in a family living room or cabin.

Description: A real fire and comforting warmth

Imagine sitting in a comfortable chair with a glass of wine while it freezes outside, listening to the quiet crackle of wood. The Firebull S6 wood-burning convection stove with a glass door turns even a cold room into a cosy home. It heats the air quickly and efficiently, while its industrial-style appearance gives the interior character.

Key features

• A captivating view of the fire: The large glass window, 290 mm in diameter, brings the visual appeal of a traditional fireplace into your living room or holiday home.
• High efficiency and fuel savings: The ingenious casing of curved tubes enables rapid warm-air circulation (“free airflow”) and achieves 80.1% efficiency.
• Two-chamber combustion (CB system): Tertiary air is preheated in a long channel and supports cleaner combustion of emissions, resulting in more heat and less soot on the glass.
• Precise control of the flames: A simple control damper lets you adjust burn intensity and overall output from 4 to 11 kW.
• Practical firebox: Despite its elegant shape, it accepts logs up to 36 cm long (ideally 25 cm), extending the time between refuelling.

Where does it work best?

• Living rooms: If you want a functional design feature with an industrial touch, this stove becomes the warm heart of your home.
• Cabins and holiday homes: After a day outdoors, your family can enjoy both rapid warmth and a view of the flames while relaxing in the evening.
• Traditional wine cellars and clubrooms: A real fire adds to guests' comfort and gives gatherings with friends a distinctive atmosphere.
• Holiday accommodation and glamping: A good choice for experience-led stays where guests expect warmth, attractive design and the calming sight of fire.

Advantages over conventional stoves

Conventional radiant stoves release heat slowly and initially warm only the air nearby. Firebull stoves, like Bullerjan-type tubular stoves, draw in cold air near the floor, heat it rapidly within their casing and release it smoothly from the top into the room. Comfortable warmth quickly reaches even distant corners.

Need a purely practical heater for a dusty, demanding workplace where you do not want to clean glass? See the Firebull S6 with a solid door.

Frequently asked questions (FAQ)

What warranty does the Firebull S6 have?

This designer Firebull S6 convection stove has a 3-year warranty, supporting long-term satisfaction with the product.

Does the warranty cover the door glass?

The heat-resistant door glass is not covered. It is considered a consumable part that can suffer mechanical damage or damage through improper use, such as a log striking it during refuelling.

What is the service life of the Firebull S6?

With correct operation it can reach 20 years. The stove must not be overloaded or heated until the steel casing glows red. This does not happen when used within its stated maximum output.

Can I use it as my main heat source?

Yes, provided the model is chosen to match the required output and heating capacity. This model is designed for 80–230 m³.

Which fuel is suitable?

You can burn quality logs or wood briquettes up to 36 cm long. For attractive flames and ideal burning, the optimal length is 25 cm.

How long does one full load burn?

With dry, unsplit logs of optimal or maximum length and the air controls set for low-output burning, the fire and flames can last up to 3 hours without refuelling.

How long does it give off heat after the last load?

It can continue burning and radiating warmth for up to 7 hours after the last load of dry, unsplit roundwood. Set the air controls correctly to minimum and operate the stove for at least 8 hours beforehand so sufficient glowing embers accumulate. Once completely cool, the fire must be relit.

How often must ash be removed?

About once or twice a month. These Firebull tubular stoves deliberately have no grate or ash pan: the fire burns directly on the bottom tubes and is lit on a bed of ash. Remove ash with a shovel or suitable fireplace ash vacuum only when it reaches the lower edge of the loading opening. This essential insulating layer protects the bottom from direct heat. Repeated burning leaves little fine dust.

How do I clean the Firebull S6 glass?

Regular maintenance is essential. To remove soot and tar from the glass door, try these proven methods:

• Fine ash (free and environmentally friendly): Dip a damp paper towel in fine, cold ash from the firebox. Wipe deposits from the cool glass with gentle circular motions. Wash with clean water and dry.
• Specialist cleaners: For stubborn tar, use a dedicated fireplace-glass cleaner as a foam or spray. Apply only to a cool door, leave briefly, then wipe off.
• Vinegar solution: Mix vinegar and water 1:1 in a spray bottle. Spray onto cool glass, leave briefly and wipe with a microfibre cloth.

How can I prevent soot and tar on the glass?

Use only sufficiently dry wood with moisture ideally below 20%. Wet wood causes heavy soot deposits. Do not keep the air supply completely restricted: insufficient oxygen prevents proper combustion and produces thick smoke that spoils the view of the fire.

What type of glass is used in the door?

The Firebull S6 has special heat-resistant ceramic glass that withstands the extreme temperatures in the combustion chamber. With normal use and correct lighting, it should not crack.

How do I prevent smoke escaping when refuelling?

Ideally, add fuel when the previous wood has nearly burned away and embers remain on the ash. If the flue has a damper, ensure it is fully open. Fully open both primary and secondary air inlets before opening the door wide.

Carefully release the handle and open the door only about 1–2 cm at first. Wait 5–10 seconds for the flue gases to be drawn into the chimney. This balances the pressure between the firebox and room and creates the draught needed to keep smoke out of the living space. Then open fully, add the necessary logs promptly and safely, and close immediately.

Does the Firebull stove paint need to be cured?

Yes, it must be heat-cured before first use so that the surface finish hardens correctly.

Curing procedure:

• During the first firing, gradually heat the stove to its stated maximum output.
• Maintain that output for approximately 2 hours.
• Ventilate the room adequately. Odour and smoke can occur as substances are released from the paint.
• Then let the stove cool completely.

You can also cure the paint outdoors, avoiding the need to ventilate an indoor room. Follow these steps:

• Place the stove in a safe location suitable for operation.
• Connect a flue pipe at least 2 m high. This should be sufficient for paint curing.
• Gradually heat the stove to its stated maximum output.
• Maintain that output for approximately 2 hours.
• Odour and smoke can occur as substances are released from the paint.
• Let the stove cool completely.
• Once cool, move and install it in its intended indoor position.

Note: Noticeable odour and smoke can occur during the first curing fire. This is normal while the heat-resistant paint hardens.

Important information

• Firebull convection stove installation and operating instructions
• Overview of Firebull stove heating capacities
• About Firebull stoves
• Energy label A