Archives: Definitions

The Great British Insulation Scheme (GBIS) is a government initiative aimed at improving energy efficiency in homes across the United Kingdom. Launched as part of broader efforts to tackle climate…

Microbial Volatile Organic Compounds (MVOCs) are organic chemicals produced by microorganisms, such as bacteria and fungi, during their metabolic processes. These compounds are released into the air and can contribute…

TrustMark is a Government Endorsed Quality Scheme in the UK designed to protect consumers by ensuring that tradespeople and businesses meet high standards of technical competence, customer service, and ethical…

The Home Energy Efficiency Plan (HEEP) is particularly relevant in the UK house building and retrofit sectors, where improving energy efficiency is critical for reducing overall energy consumption and meeting…

Resistance in the context of ventilation systems refers to the friction or opposition to airflow caused by various components and accessories used within the system. This includes elements such as…

The daylight factor is a quantitative measure of the amount of natural light that reaches a specific point in a room, expressed as a percentage. It is calculated by comparing…

The Decent Homes Standard is a regulatory framework established in England and Northern Ireland, aimed at ensuring minimum quality standards for social housing. Introduced in the early 2000s, it is…

A device manufactured from thermo-conductive materials that facilitates the transfer of heat between two or more fluids without mixing them. Heat exchange units are commonly used in Mechanical Ventilation with…

A Heat Recovery Unit (HRU) is a device designed to reclaim and recycle heat from exhaust air within a building. It utilises thermo-conductive materials to transfer heat from the outgoing…

Latent heat of vaporisation refers to the energy absorbed by a liquid when it evaporates or released when it condenses. This thermodynamic principle describes the transition of substances between liquid…