Glossary
What is HVAC?
Heating, Ventilation, and Air Conditioning (HVAC) refers to the integrated system used to regulate...
What is Interstitial Condensation?
Definition and Mechanism Interstitial Condensation refers to the formation of liquid water within the...
What is Positive Input Ventilation (PIV)?
Positive Input Ventilation (PIV) is a type of mechanical ventilation system that introduces fresh,...
What is Radon (Rn)?
Radon (Rn) is a naturally occurring radioactive gas formed from the decay of uranium...
What is Switched Live?
The switched live is the conductor in an electrical circuit that carries current only...
What is System 1?
System 1 is a now-outdated term used in the 2010 edition of Approved Document...
What is the Air Exchange Rate (AER)?
The air exchange rate (AER) refers to the number of times the air within...
What is the Air Leakage Rate (A-Value)?
The Air Leakage Rate, commonly referred to as the A-Value, quantifies the volume of...
What is the Approved Document B(1) (Part B)?
Approved Document B(1) is part of the UK Building Regulations, specifically addressing fire safety...
What is the Approved Document F(1) (Part F)?
Approved Document F (Part F) Solved: The Compliance Guide That Protects Your Home, Health,...