The temperature at which water vapour turns into liquid water. It is important when assessing condensation risk.
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Design Heat Loss
The amount of heat a property or room is expected to lose during cold weather. It is used to size heating systems correctly.
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Design Flow Temperature
The water temperature a heating system is designed to send to radiators or underfloor heating. Lower flow temperatures are usually better for heat pump efficiency.
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Decarbonisation
The process of reducing carbon emissions, often by improving insulation, reducing energy demand and switching to low-carbon heating.
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Damp Proof Course
A physical or chemical barrier designed to stop moisture rising through walls.
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Damp
Unwanted moisture in a building. Common types include penetrating damp, rising damp, condensation-related damp and trapped moisture.
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Coefficient of Performance
A measure of heat pump efficiency at a particular moment. A CoP of 3 means the heat pump is producing three units of heat for every one unit of electricity used.
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Controls
The timers, thermostats, programmers, smart controls and sensors that manage heating, hot water and ventilation systems.
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Conservation Area
An area with special architectural or historic interest. Some retrofit measures may need extra care or permissions.
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Condenser
In a heat pump or refrigeration cycle, the condenser is the heat exchanger where the refrigerant releases heat into the heating system.