Posts by Janmari Tanga-an

Part L Metering Requirements In this article, let’s discuss Part L metering requirements, its benefits, and how to properly document and report your organisation’s metering data for better Part L compliance. What are Part L metering requirements Accurate metering is proof that the heating, cooling, ventilation, and lighting systems of a building are operational and…

Part L Ventilation Ventilations role in Part L? Ventilation prevents the buildup of moisture, carbon dioxide, and other pollutants that leads to poor air quality in a building, and eventually causes health issues to occupants. Part L requires buildings to have controlled ventilation systems that maintain adequate indoor air quality with minimised heat loss. Ventilation…

Part L Insulation What is the Role of Insulation in Achieving Part L Compliance? Insulation across the building envelope helps maintain thermal comfort by stabilizing the internal temperatures. This reduces the need to heat or cool a building and uses extra energy to power these systems. Part L U-values should be met and the insulation…

Part L Doors Role of Doors in Part L Compliance Doors are contributors to a building’s air tightness, and if they are poorly installed or sealed, the uninsulated space could lead to uncontrolled air leakage and consequently heat loss through convection as air can pick up heat from warm areas and circulates it through cold…

Part L Air Tightness What is Air Tightness and its Relevance to Building Performance? Air tightness is the measurement of how well a building envelope can prevent air from leaking out. It is an important energy performance indicator for complying with Part L. In simple terms, having less air leakage means less heat loss and…

Part L U values (2023 and more) What are U-Values in the Part L Regulations (2023 updates)? Part L U-values, otherwise known as thermal resistance is the rate of transfer of heat through a material, structure or matter and it is expressed in W/m²·K. The lower the U-value is, the better is its insulation properties,…

Part L Lighting What is the Role of Lighting in Part L Compliance? Lighting, being one of the main systems that affects electricity consumption, is a factor to consider in order to comply with Part L regulations. It accounts for a large portion of a building’s entire energy usage more so in non-dwellings like industrial…