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Your Chimney

Understand Your Chimney

There's nothing more frustrating than setting your heart on a new fire only to discover that its not actually suitable for your home. To help you understand which fires are suitable for your home we have prepared a key to classify your chimney - outlined below. When looking through the product pages on this site you will see the same images used to indicate which types of chimney are suitable for that fire.







Brick Built Chimney - Class 1

The classic brick built chimney is suitable for all gas and electric fires and stoves. As these chimneys are deep you can choose a full depth gas fire through to the shallower slimline or electric products.




Pre-fabricated Flue- Class 1 or 2

Pre-fabricated chimneys are suitable for most gas and electric fires and gas stoves. Pre-fabricated chimneys offer a good depth so you can choose from the majority of full depth gas fires and all slimline gas and electric fires.




Pre-Cast Flue - Class 2

This flue is manufactured into rectangular hollow concrete or clay blocks that travel vertically, up through the cavity wall of your property, to a ridge vent or metal flue terminal on the roof. These flues tend to be very shallow in depth, although suitable deeper appliances may be able to be installed with the use of either a spacer kit or deeper rebate on the fireplace.




A power flue is an open fronted gas appliance with an electronically driven fan system either semi recessed or surface mounted on the outside of the wall to expel the flue gases and as such a sound is to be experienced when the fan is turned on. When the fire is not in use, some natural air circulation may occur through the flue terminal, which is quite normal.

There are two types of power flue options available, a rear flue or side flue for left and right applications in instances where it is not possible to rear flue through the chosen wall (conditions apply). It may also be possible to install a deep power flue gas fire for added realism, subject to the depth of rebate on a surround if applicable or if installed with a spacer kit where available.



Balanced Flue

A balanced flue is a glass fronted gas appliance, which is completely sealed from the room into which they are installed and vents directly to an outside wall. Air is drawn in from the outside for combustion purposes through the outer pipe. the inner pipe vents the combustion gases safely away to the outside of the property.

There is no electric supply required; hence no sound or natural draught is experienced as with a power flue appliance. There is also a choice of either outset or inset versions available.

Flueless Fires

No chimney. No outside wall no problem.

Flueless fires are ideal for these situations, they have a catalytic converter in them similar to your car that turns the carbon monoxide produced into carbon dioxide.

They require a minimum room size and also an airbrick / vent (additional ventilation) due to the way that they operate.

Please check before purchasing that you have the correct circumstances to install this type of product.

This is a guide for your information only, and should not be relied upon on its own.  Please get you gas installer to check you have the correct flue type before you purchase the product.