Ventilation surveys and Ventilation Assessments are integral to ensuring compliance with Building Regulations Part F and PAS2035 for domestic properties. 

These evaluations gauge the effectiveness and efficiency of installed ventilation systems, crucial for maintaining a healthy indoor environment. 

Ventilation surveys meticulously examine existing setups, while assessments provide insights into improvements needed, aligning with current requirements and any planned retrofit works. 

As of June 15, 2022, changes to Approved Document F of the Building Regulations for Ventilation further emphasize the importance of these assessments for regulatory compliance.