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The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more

Point of Reference
10 dBA is the sound level of normal human breathing. To put it into perspective, thunder is a whopping 120 dBA...more
Part L1B
Conservation of fuel and power in Existing Dwellings

Once Brewed - Part F Ventilation Testing - 0191 633 0103
The office that covers this area is: Newcastle
Phone Number: 0191 633 0103 Email: once-brewed@e2consultants.co.uk
Our other services include:
Part F Ventilation Testing can also be known as:
Ventilation Testing Equipment, Part F Fan Testing, Ventilation Commissioning Certificate, Part F Testing, Duct Testing, Part F Ventilation Certificate, Air Flow Rate Testing,


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