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| The quickest, most common, most cost-effective way to improve the energy efficiency of a house is to address air leakage. This is known as the air infiltration / exfiltration or the porosity / permeability of the home's pressure envelope. It applies to old houses and new.
Measuring and documenting air leakage is included with each audit.
Reducing air leakage is achieved with an air-sealing job, not included with an audit.
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