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![Did you know Durham](/images/didyouknow.png)
Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
![Did you know Durham](/images/didyouknow.png)
Air Testing
As part of thermographic surveys we can also use an air Pressure testing kit to depressurise the building and help detect any air leakage within the property..more
Part L2A
Conservation of fuel and power in new builds other than dwellings
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SAP Extension Calculations Quote in Durham
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