The Charnwood External Air Supply Kit allows combustion air to be channelled directly from outside the property into a compatible Charnwood stove, rather than relying entirely on air drawn from within the room.
This can provide greater installation flexibility and is particularly useful in modern, well-insulated or airtight properties, as well as rooms where an additional source of combustion air is required.
Different external air kits are available depending on the Charnwood stove model. Always select the correct kit for your appliance.
What Does an External Air Kit Do?
A wood burning stove requires a reliable supply of combustion air to operate correctly. In a conventional installation this air is normally drawn from the room in which the stove is installed.
An external air supply kit allows suitable outside air to be directed towards the stove’s combustion air inlet instead. This can reduce the stove’s reliance on air from within the room and help provide a more consistent source of combustion air.
When Is an External Air Supply Useful?
An external air connection can be particularly useful in:
- Modern airtight homes
- Highly insulated properties
- Low-energy buildings
- Small rooms
- Outbuildings
- Properties with limited ventilation
- Installations requiring dedicated combustion air
The ventilation requirements for every stove installation should still be assessed individually and the stove installed in accordance with the manufacturer’s instructions and applicable Building Regulations.
Available Charnwood External Air Kits
TH50 External Air Supply Kit – 010/TH50
The Charnwood TH50 External Air Supply Kit is compatible with selected smaller and medium-sized Charnwood appliances.
Compatible models include:
- C-Four
- Aire 3
- Aire 300
- Aire 4
- Aire 400
- Aire 500
- Aire 700
- Arc 5
- Skye 5
- Island I
- Cranmore 3
- C-Four Duo
- C-Five Duo
Charnwood part number: 010/TH50
TH62 External Air Supply Kit – 010/TH62
The Charnwood TH62 external air kit is designed for selected Cove models.
Compatible models:
- Cove 2
- Cove 3
Charnwood part number: 010/TH62
TH64 External Air Supply Kit – 010/TH64
The Charnwood TH64 external air kit is designed for the larger Island III stove.
Compatible model:
- Island III
Charnwood part number: 010/TH64
TH81 External Air Supply Kit
The Charnwood TH81 external air kit is designed for selected Charnwood Bay models.
Compatible model:
- Bay
Please confirm the exact Bay model and appliance compatibility before ordering.
TH82 External Air Supply Kit – 010/TH82
The Charnwood TH82 External Air Supply Kit is compatible with a wide range of Charnwood stoves and inserts.
Compatible models include:
- C-Four Insert
- C-Five
- C-Six
- C-Seven
- C-Eight
- Island II
- Aire 5
- Aire 7
- Cranmore Insert
- Cranmore 5
- Cranmore 7
- Arc 7
- Skye 7 / E700
- Haven
Charnwood part number: 010/TH82
Benefits of an External Air Supply
- Provides dedicated combustion air
- Reduces reliance on room air
- Supports consistent stove operation
- Useful in airtight properties
- Suitable for modern homes
- Genuine Charnwood accessory
Modern and Airtight Homes
Modern properties can be significantly more airtight than older buildings. While this can improve energy efficiency, it can also reduce the amount of naturally available replacement air within the room.
A dedicated external air supply can help provide the stove with the combustion air it requires without relying entirely on air entering the room through background ventilation.
Choosing the Correct External Air Kit
Charnwood uses several different external air kits across its stove range, so the correct kit should always be selected according to the exact stove model.
The main options are:
- TH50 – 010/TH50
- TH62 – 010/TH62
- TH64 – 010/TH64
- TH81
- TH82 – 010/TH82
If you are unsure which external air supply kit is compatible with your stove, contact us with the Charnwood model before ordering.
Genuine Charnwood Stove Accessory
These external air supply kits are genuine Charnwood components designed for compatible Charnwood appliances, including selected models from the Aire, Skye, Arc, Bay, Cove, Island, C-Series, Cranmore and other ranges.
Installation Advice
The route, termination and sizing of the external air supply should form part of the overall stove installation design. Installation requirements can vary depending on the property, stove model and ventilation arrangement.
Always follow the relevant Charnwood installation instructions and applicable Building Regulations. If you need help specifying the correct external air kit or stove installation, contact our team for advice.
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