Archives: Glossary

  • Condensation

    Water droplets that form when warm moist air meets a cold surface. It is common on windows, cold walls and areas with poor ventilation.

  • Compensation Controls

    Heating controls that adjust flow temperature depending on internal or external conditions.

  • Commissioning

    The process of checking, setting up and recording that a system has been installed correctly and is working as designed.

  • Combustion Ventilation

    Ventilation required for appliances that burn fuel, such as gas, oil, LPG, coal or wood.

  • Combi Boiler

    A boiler that provides heating and hot water directly, without needing a separate hot water cylinder.

  • Cold Bridge

    Another term for a thermal bridge. It is an area where heat escapes more easily, often causing cold spots or condensation risk.

  • Central Heating

    A heating system where heat is generated in one place, such as a boiler or heat pump, and distributed around the home.

  • Cellulose Insulation

    Insulation made from recycled paper fibres. It is often used in lofts, timber frames and some breathable construction systems.

  • Cavity Wall Extraction

    The removal of failed, unsuitable or wet cavity wall insulation from a property.

  • Cavity Wall Insulation

    Insulation installed into the cavity between the inner and outer leaves of a wall to reduce heat loss.