Chimney, Flue or NO Chimney for Gas fires

Before you choose your new gas stove or fire, you will need to know which type of chimney or flue you have, as this dictates your choice of stove or fire.

Chimneys & Pre-fabricated Flues

• Brick/Stone Chimney (Class 1)

  The classic brick built chimney is suitable for all gas fires. You will see a brick chimney rises above your roof. It will usually have a traditional chimney pot but may have a gas terminal. A chimney relies on the natural circulation of heating air to expel the products of combustion up your chimney.

• Pre-fabricated Flues (Class 1 & 2)

  Pre-fabricated chimneys are suitable for most gas fires dependent on flue depth and diameter. You will see a metal flue cowl on your roof. Some are all metal whilst others may have a short rectangular pot (but without a chimney stack). These flues create the same circulation of heated air as a brick or stone chimney.

If you have neither a chimney or Prefabricated Flue then a precast flue or balanced flue may be installed.

Pre-cast Flue (Class 2)

• Pre-Cast Flue (Class 2) Pre-cast flues are found in most modern homes and are suitable for slimline gas fires. You can identify them by either a metal flue cowl or a raised ridge terminal on your roof. *Deep appliances however may be able to be installed with the use of either a spacer kit or deeper rebate into the fireplace.

An Yes! You can even get a Gas fire with no chimney at all!

• A balanced flue gas fire is completely sealed from the front of your room. Instead of a traditional chimney, they work by venting air via a pair of co-axial tubes that pass horizontally through any external wall.
• Flueless gas fires require no flue at all, just an air vent placed in your room. They use a built-in catalytic converter to clean any exhaust gasses.
• A powerflue gas fire works similarly to a balanced flue, but uses a fan to remove fumes.

If you are unsure about what chimney or flue system you have, our professional Gas Fire Installer can confirm this during an on site Fire Safety Survey and Consultation at your home. Please contact us for any enquiries or book a consultation.