Heating Glossary, Understanding Heating Terms
Understanding heating terms used in heating and boiler systems by engineers can be tricky. Our Heating Glossary is designed to help homeowners in Birmingham, Edgbaston, Harborne, Selly Oak, and surrounding areas make sense of key concepts, from flow rates and condensing boilers to TRVs, combi systems, regular boilers, and more. Whether you’re considering a new installation or simply want to understand your current setup, our clear explanations make it easy to stay informed and confident about your heating system.

Heating Terms Explained
Understanding heating terminology can make it much easier to choose the right boiler and manage your home heating system. Whether you’re considering a Combi Boiler for instant hot water or exploring the benefits of a System Boiler for larger homes, our Heating Glossary explains the most common terms in simple language. From flow rates and TRVs to condensing boilers and Megaflo cylinders, you’ll find all the essential definitions in one place.
Heating Glossary
Quick reference for common heating and boiler terms to help you understand your system.
| Term | Definition | 
|---|---|
| Combi Boiler | A combination boiler providing heating and hot water on demand, without the need for a separate cylinder or tank. | 
| System Boiler | Boilers that work with a separate hot water cylinder to supply consistent hot water for larger homes. | 
| Regular Boiler | Traditional boiler requiring a separate cylinder and cold water tank, ideal for homes with multiple bathrooms. | 
| Flow Rate | The measure of water moving through a system, affecting how quickly hot water reaches taps or showers. | 
| Condensing Boiler | Modern boiler type that captures extra heat from exhaust gases, improving efficiency and reducing energy bills. | 
| TRVs | Thermostatic radiator valves that let you control the temperature of individual radiators, saving energy and money. | 
| Megaflo Cylinder | A pressurised hot water cylinder providing high flow rates and instant hot water to multiple taps. | 
| Boiler Efficiency | A measure of how effectively a boiler converts fuel into heat for your home, usually expressed as a percentage. | 
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