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Dw143 Ductwork Leakage Testing
Leakage Limits: Maximum allowable leakage rates are defined based on the duct systems size and the building type. Test Equipment: Specialized devices such as
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Leak Allowance
How much is the leak allowance? The allowance adjustment, if granted, will be for 50% of excess usage for visible leaks and 100% of excess usage for concealed
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Leakage Code of Practice - Domestic Customers
A leakage allowance claim must be made within three months of the leak being identified and can be applied for up to two billing periods.
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