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Chimney

Brand: Spiroduct Model: 0000001291
Suitable for pellet stove with flue diameter 80mm. Includes everything that might be needed to connect the flue of a pellet stove or a pellet boiler stove: Straight flue pipe 1m length - 2pcs; Straight flue pipe 0,5m length - 1pcs; 90° Tee with cap - 1pcs; 90° Elbow - 1pcs; Coupli..
€ 123.08
Ex Tax:€ 102.56
Brand: Spiroduct Model: 0000010001
Suitable for pellet stove with flue diameter 80mm. Includes everything that might be needed to connect the flue of a pellet stove or a pellet boiler stove: Straight flue pipe 1m length - 2pcs; Straight flue pipe 0,5m length - 1pcs; 90° Tee with cap - 1pcs; 90° Elbow - 1pcs; Coupli..
€ 139.00
Ex Tax:€ 115.83
Brand: Spiroduct Model: 0000007816
Chimney kit for pellet stove, Stainless steel AISI 304, 80-150mm
Flue kit for pellet stove, Stainless steel AISI 304, 80-130mm - 80-150mm
Suitable for pellet stove with flue diameter 80mm. Includes everything that might be needed to connect the flue of a pellet stove or a pellet boiler stove: Straight flue pipe 1m length - 2pcs; Straight flue pipe 0,5m length - 1pcs; 90° Tee with cap - 1pcs; 90° Elbow - 1pcs; Coupli..
€ 140.00
Ex Tax:€ 116.67
Brand: Spiroduct Model: 05.420.086
Flue kit for wood burning stove, Stainless steel AISI 304, Ф130-Ф150
Flue kit for wood burning stove, Stainless steel AISI 304, Ф150mm
Suitable for wood burning stove with flue diameter 130mm. Includes everything that might be needed to connect the flue of a wood burning stove or a boiler stove: Straight flue pipe 1m length - 2pcs; Straight flue pipe 0,5m length - 1pcs; 90° Elbow - 1pcs; Coupling - 1pcs (in case one of ..
€ 160.00
Ex Tax:€ 133.33
Brand: MK ŻARY Model: 6RPS500130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 28.63
Ex Tax:€ 23.86
Brand: MK ŻARY Model: 6RPS500150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 28.68
Ex Tax:€ 23.90
Brand: MK ŻARY Model: 6RPS1000130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 44.12
Ex Tax:€ 36.77
Brand: MK ŻARY Model: 6RPS1000150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 44.48
Ex Tax:€ 37.07
Brand: MK ŻARY Model: 6RP250130
WOOD Suitable for wood burning fireplaces and wood burning stoves.   PELLETS Suitable for wood burning fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 13.09
Ex Tax:€ 10.91
Brand: MK ŻARY Model: 6RP250150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 13.66
Ex Tax:€ 11.38
Brand: MK ŻARY Model: 6RP500130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 18.71
Ex Tax:€ 15.59
Brand: MK ŻARY Model: 6RP500150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 18.71
Ex Tax:€ 15.59
Brand: MK ŻARY Model: 6RP1000130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 26.23
Ex Tax:€ 21.86
Brand: MK ŻARY Model: 6RP1000150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 28.94
Ex Tax:€ 24.12
Brand: MK ŻARY Model: 6RD120130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 17.38
Ex Tax:€ 14.48
Brand: MK ŻARY Model: 6RD130150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 17.38
Ex Tax:€ 14.48
Brand: Spiroduct Model: 0000012968
Flue kit for pellet stove, Stainless steel, Insulated, Ф100 (inner diameter), 3.7m-11.7m
Flue kit for pellet stove, Stainless steel, Insulated, Ф100 (inner diameter), 4.7m
Flue kit for pellet stove, Stainless steel, Insulated, Ф100 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 349.74
Ex Tax:€ 291.45
Brand: Spiroduct Model: 0000013596
Flue kit for pellet stove, Stainless steel, Insulated, Ф80 (inner diameter), 3.7m-11.7m
Flue kit for pellet stove, Stainless steel, Insulated, Ф80 (inner diameter),  4.7m
Flue kit for pellet stove, Stainless steel, Insulated, Ф80 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 310.26
Ex Tax:€ 258.55
Brand: MK ŻARY Model: 6SET130S
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 90.50
Ex Tax:€ 75.42
Brand: MK ŻARY Model: 6SET150S
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 94.33
Ex Tax:€ 78.61
Brand: Spiroduct Model: 0000013636
Flue kit Stainless steel Insulated Ф130 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф130 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф130 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 532.82
Ex Tax:€ 444.02
Brand: Spiroduct Model: 0000013644
Flue kit Stainless steel Insulated Ф150 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф150 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф150 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 564.10
Ex Tax:€ 470.09
Brand: Spiroduct Model: 0000013628
Flue kit Stainless steel Insulated Ф180 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф180 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф180 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 635.38
Ex Tax:€ 529.49
Brand: Spiroduct Model: 0000013620
Flue kit Stainless steel Insulated Ф200 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф200 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф200 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 694.87
Ex Tax:€ 579.06
Brand: Spiroduct Model: 0000012799
Flue kit Stainless steel Insulated Ф230 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф230 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф230 (inner diameter),  5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 807.69
Ex Tax:€ 673.08
Brand: Spiroduct Model: 0000013612
Flue kit Stainless steel Insulated Ф250 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф250 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф250 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 862.56
Ex Tax:€ 718.80
Brand: Spiroduct Model: 0000013604
Flue kit Stainless steel Insulated Ф300 (inner diameter), 3.7m-11.7m
Flue kit Stainless steel Insulated Ф300 (inner diameter), 4.7m
Flue kit Stainless steel Insulated Ф300 (inner diameter), 5.7m
Stainless steel flue liners aid in the burning process and also carry the flue gases away. They reduce both fuel consumption and condensation. In normal conditions this series of flue pipes can withstand electrical, heat and mechanical loads, as well as atmospheric and chemical exposure. Componen..
€ 969.74
Ex Tax:€ 808.12
Brand: MK ŻARY Model: 6SKS45130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 15.70
Ex Tax:€ 13.08
Brand: MK ŻARY Model: 6SKS45150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 17.12
Ex Tax:€ 14.27
Brand: MK ŻARY Model: 6LKRS90130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 26.44
Ex Tax:€ 22.03
Brand: MK ŻARY Model: 6LKRS90150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 26.94
Ex Tax:€ 22.45
Brand: MK ŻARY Model: 6LKS90130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 21.37
Ex Tax:€ 17.81
Brand: MK ŻARY Model: 6LKS90150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 22.34
Ex Tax:€ 18.62
Brand: MK ŻARY Model: 6OS2115130
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 9.92
Ex Tax:€ 8.27
Brand: MK ŻARY Model: 6OS2115150
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 9.77
Ex Tax:€ 8.14
Brand: MK ŻARY Model: 6IP1305
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 3.78
Ex Tax:€ 3.15
Brand: MK ŻARY Model: 6IP1505
WOOD Suitable for fireplaces and wood stoves.   PELLETS Suitable for fireplaces and pellet stoves.   SOLID FUEL Suitable for wood stove furnaces.   ..
€ 3.76
Ex Tax:€ 3.13
Brand: Spiroduct Model: 0000013456
Adaptor for flexible flue, Stainless steel AISI 304, Female, Ф100-Ф300
Adaptor for flexible flue, Stainless steel AISI 304, Female, Ф130
Adaptor for flexible flue, Stainless steel AISI 304, Female, Ф150
The stainless steel coupling connector is used for connecting flue pipes, increasing their length or rotating their connection direction. This model is used for connecting a rigid flue pipe and a flexible liner. Suitable for wood stoves, pellet stoves, and all kinds of central heating boilers (ga..
€ 7.69
Ex Tax:€ 6.41
Brand: Spiroduct Model: 0000013419
Adapter for flexible flue liner, Stainless steel AISI 304, Male, Ф100
Adaptor for flexible flue, Stainless steel AISI 304, Male, Ф80-Ф300
Adaptor for flexible flue, Stainless steel AISI 304, Male, Ф130
The stainless steel coupling connector is used for connecting flue pipes, increasing their length or rotating their connection direction. This model is used for connecting a rigid flue pipe and a flexible liner. Suitable for wood stoves, pellet stoves, and all kinds of central heating boilers (ga..
€ 7.69
Ex Tax:€ 6.41
Brand: Spiroduct Model: 0000007498
Adaptor for flexible flue, Stainless steel AISI 304, Ф100-Ф300
Adaptor for flexible flue, Stainless steel AISI 304, Ф130
Adaptor for flexible flue, Stainless steel AISI 304, Ф150
The stainless steel coupling connector is used for connecting flue pipes, increasing their length or rotating their connection direction. This model is used for connecting 2 pieces of flexible liner together. Suitable for wood stoves, pellet stoves, and all kinds of central heating boilers (gas, ..
€ 7.69
Ex Tax:€ 6.41
Brand: Spiroduct Model: 0000013275
Adjustable wall support / Chimney bracket, Stainless steel AISI 304, Ф130-Ф500
Adjustable wall support / Chimney bracket, Stainless steel AISI 304, Ф150
Adjustable wall support / Chimney bracket, Stainless steel AISI 304, Ф180
Used as a base support for a chimney made of stainless steel flue pipes. Usually placed on the external wall between the chimney tee and the first straight flue pipe. The model can be adjusted by 4cm. Produced of AISI 304 BA stainless steel which makes it highly resistant to corrosion and high..
€ 42.56
Ex Tax:€ 35.47
Brand: Spiroduct Model: 0000013258
Aspiromatic revolving chimney cowl T200, Stainless steel AISI 304, Ф130-Ф350
Aspiromatic revolving chimney cowl T200, Stainless steel AISI 304, Ф150
Aspiromatic revolving chimney cowl T200, Stainless steel AISI 304, Ф200
The chimney rain cap spinner is constructed for mounting on the top end of a chimney. Doesn't allow water and wind inside the chimney. Helps carrying the flue gas away from the building. It is recommended to install it at a minimum distance of 5m from the burning chamber of the stove o..
€ 71.28
Ex Tax:€ 59.40
Brand: Spiroduct Model: 0000013232
Aspiromatic revolving chimney cowl T400, Stainless steel AISI 304, Ф130-Ф350
Aspiromatic revolving chimney cowl T400, Stainless steel AISI 304, Ф150
Aspiromatic revolving chimney cowl T400, Stainless steel AISI 304, Ф180
The chimney rain cap spinner is constructed for mounting on the top end of a chimney. Doesn't allow water and wind inside the chimney. Helps carrying the flue gas away from the building. It is recommended to install it at a minimum distance of 5m from the burning chamber of the stove o..
€ 89.74
Ex Tax:€ 74.79
Brand: Spiroduct Model: 0000007822
The aspiromatic chimney rain cap is constructed for mounting on the top end of a chimney. Doesn't allow water and wind inside the chimney. Helps carrying the flue gas away from the building. Regulated square base - one model fits chimney with sizes from 25x25cm to 45x45cm. The rotati..
€ 87.69
Ex Tax:€ 73.08
Showing 1 to 44 of 96 (3 Pages)

 

Chimneys – Everything you need to know about flue systems

As a crucial part of your heating system, the chimney must be designed to ensure a stable combustion process and safe exhaust of flue gases. It has been proven that high-quality chimneys enhance combustion efficiency, leading to lower fuel costs.

In our online store BalkanEnergy.NET , you will find a wide range of flue kits and accessories for various heating appliances. Our metal chimneys with front laser welding are made of stainless steel AISI 304, certified according to European and International standards, and can be installed in new or renovated buildings. Our stainless steel chimneys have competitive prices and can be installed on wood burning stoves, pellet stoves, and boilers running on diesel, gas, solid fuel, and biomass.

 

Chimney

 

How to choose the right flue system?

The choice of a chimney depends on several key factors:

  • Type of heating appliancewood burning fireplace, pellet stove, wood stove furnace, etc.

  • Diameter of the flue pipes – must match the appliance's requirements.

  • Chimney material – stainless steel, ceramic, galvanized steel, etc.

  • Insulation availability – especially important for external chimneys.

 

Types of chimney elements and accessories

Chimney brackets are necessary for the stable attachment of flue pipes. They ensure a secure installation and prevent unwanted movement of the chimney during temperature expansions.

 

Adjustable wall support / chimney bracket stainless steel AISI 304 Ф130-Ф500   Chimney bracket reinforced stainless steel Ф80-Ф400   Chimney roof bracket stainless steel Ф150-Ф400

 

Flue pipes are essential for the proper exhaust of smoke gases. They can be single-wall or twin-wall (insulated), with materials including stainless steel, aluminum, and galvanized steel.

 

Flue pipe stainless steel AISI 304 straight length 0.5m Ф80-Ф350   Stainless steel flexible flue size Ф80-Ф300

 

Flue adaptors are used to connect different diameters of flue pipes. They ensure a reliable and tight connection between different elements of the chimney system.

 

Flue adaptor single wall to twin wall stainless steel AISI 304 Ф80-130 - Ф300-350   Coupling connector stainless steel AISI 304 male-male Ф80-Ф300

 

These flue pipes are specifically designed for better thermal insulation and protection against condensation. The insulation prevents heat loss and extends the lifespan of the chimney.

 

Telescopic twin wall flue pipe stainless steel AISI 304 straight insulated length 30 - 50cm, Ф80-130 - Ф300-350   Chimney twin wall tee with cap insulation stainless steel AISI 304, Ф80-130

 

Chimney flashings provide additional protection against weather conditions such as wind, rain, and snow. They help maintain the functionality and durability of the chimney system.

 

Chimney flashing for inclined roof stainless steel AISI 304 Ф80-Ф400   Flue collar flange pitch 8° up to 30° stainless steel AISI 304, Ф130-Ф350

 

Complete flue kits offer ready-to-install solutions for building flue systems. They include all necessary components, making installation easier and ensuring maximum efficiency.

 

Flue kit stainless steel insulated Ф130   Flue kit for pellet stove stainless steel AISI 304, 100-130mm

 

Stove pipe rosettes provide an aesthetic and tight finish for the connection between flue pipes and walls or ceilings, enhancing visual appearance and preventing smoke and condensation penetration.

 

Stove pipe rosette for pellet stoves diameter 80mm, White   Stove pipe rosette for pellet stoves diameter 80mm, Black

 

Stove pipe elbows are used to change the direction of flue pipes. They come in different angles (30°, 45°, 90°) and provide flexibility in constructing the chimney system.

 

Twin wall stove pipe elbow 45° stainless steel AISI 304   Stove pipe elbow 45° stainless steel AISI 304, Ф80-Ф350

 

Chimney tees allow branching of flue pipes, commonly used when installing additional heating appliances or servicing multiple heat sources.

 

Chimney twin wall 135° tee with cap insulation stainless steel AISI 304   Chimney tee with cap 90°stainless steel AISI 304

 

Chimney Cowls prevent rain, snow, wind, and debris from entering the flue system. They also enhance chimney draft and optimize the combustion process.

 

Aspiromatic revolving chimney cowl T200 stainless steel AISI 304, Ф130-Ф350   Twin wall chimney cowl stainless steel AISI 304. Ф80-Ф500

 

Chimney Heat Exchangers increase heating efficiency by utilizing residual heat from smoke gases, leading to fuel savings and improved overall energy efficiency.

 

Wood burning stove chimney heat exchanger Typhoon XL, Ф120-Ф150   Wood burning stove chimney heat exchanger XL, Diameter 130mm

 

Specialized pellet stove pipes are designed to meet the specific needs of pellet heating appliances, typically including stainless steel and insulation to prevent condensation and ensure durability.

 

Flue kit for pellet stove stainless steel insulated

 

Useful tips for chimney maintenance

  • Regular Cleaning – Burning wood and coal leads to soot buildup, which can create a fire hazard. It is recommended to clean the chimney at least once a year.

  • Check for Damage – Inspect the chimney for cracks, rust, or damage that could affect safety.

  • Use the Right Fuel – Burning wet wood or unsuitable materials can lead to tar formation and clogging of the flue.

  • Install a Chimney Cowl – It protects against rain, snow, and birds entering, which can block the flue.

 

Frequently asked questions about chimneys

  1. How do I choose the right flue for my stove?
    The choice of a flue depends on the type of your fireplace, the diameter of its flue outlet, and the specific requirements for venting the smoke.
  2. What is the difference between a single-walled and a double-walled flue?
    Single-walled flues are suitable for indoor use, while double-walled flues are insulated and ideal for outdoor use, where insulation is necessary.
  3. Can I install the flue system myself?
    It is recommended to have the installation done by professionals to ensure the safety and proper functioning of the system.
  4. What is the purpose of chimney cowls ?
    Chimney cowls protect the chimney from water, snow, and birds, while also improving the draft of the flue system.
  5. How often should I clean my chimney?
    The chimney should be cleaned at least once a year, or more frequently if it is used intensively.
  6. What are the advantages of heat exchangers for stoves?
    Heat exchangers increase the efficiency of the stove by utilizing the heat from the smoke to warm the room.
  7. Can a single-walled flue be used for outdoor installation?
    No, it is recommended to use double-walled insulated flues for outdoor installation.
  8. How do I choose the right chimney cowls?
    The choice of a chimney cowls depends on the diameter and type of the chimney, as well as the local climate conditions.
  9. Can a flue system be installed in an existing chimney?
    Yes, there are special systems designed for installation inside existing chimneys.
  10. How do I know if my chimney needs cleaning or repair?
    Signs that your chimney needs cleaning or repair include poor draft, smoke entering the rooms, and visible damage to the chimney.
  11. What are the most common problems with flue systems?
    The most common problems include blockages, corrosion, and inadequate insulation.
  12. Can a double-wall edflue be used for indoor installation?
    Yes, double-walled flues can be used indoors, but they are primarily designed for outdoor use.
  13. What should I do if I notice smoke in the room?
    Stop using the heating appliance immediately and consult a professional to inspect the chimney.