Boiler terms & definitions

There are lots of important boiler terms & definitions used in the heating industry, but some of these important boiler terms and definitions can be quite difficult to understand so, here at Woods Building Maintenance we thought we would make things easier by putting together the ultimate glossary of all the important boiler terms & definitions you may hear.

Boiler Glossary – Important Boiler Terms & Definitions

Here’s our list of the most important boiler terms & definitions:

“A” Rated – “A” Rated is a measure of efficiency on an Energy Related Product (ErP) label. Boilers which are “A” rated have an efficiency rating of 90% or higher meaning they are the most efficient boilers on the market.

Boiler Modulation – Boiler modulation is a system which lowers the amount of gas being used by your boiler as it reaches temperatures. This helps the boiler be more efficient and save money.

Cast Iron Boiler – The term cast iron boiler refers to the description of an older boiler as the main section of the boiler, the heat exchange was made of cast iron.

Combination (Combi) Boiler – A combination (combi) boiler is one of the different types of boilers installed in UK households. They are called combi boilers because they produce all your home’s heat and water from one compact unit without the needs for a separate water tank or cylinder. They are an increasingly popular choice in households where there is limited space and cannot fit a hot water cylinder. The boiler also only heats the water you use therefore, it is much more economical to run meaning you could save money on your gas bill.

Condensate Pipe – The condensate pipe is usually a grey or white plastic pipe which carries condensate away from your boiler either internally in your home or on an outside wall. If the pipe is located outside then, it may become frozen in extremely cold weather and will prevent your boiler from working. For help on how to take care of your boiler read our handy guide.

Conventional Boiler – A conventional boiler also known as a regular boiler is made up of several parts and components including a boiler, heating controls, a hot water cylinder, a cold-water storage cistern plus a feed and expansion cistern. This type of boiler is normally found in older and larger properties.

Condensing Boiler – A condensing boiler is a high-efficiency boiler which uses gas or oil to generate heat.

DHW (Domestic Hot Water) – DHW is an acronym for Domestic Hot Water which is running water that comes out of your tap and showers for example.

ErP (Energy Related Product) – ErP is an acronym for Energy Related Product Directive. This is a European regulation that sets criteria for boiler manufacturers to report on the efficiency, noise and emissions of a gas boiler and produce energy labels for homeowners to be able to compare like appliances.

Flue – The flue is the ductwork used to carry the gasses emitted from the process of combustion.

Gas Relay Control Valve – The gas relay control valve is a mechanical valve (non-electrical) used in early gas appliances to control the gas and temperature of a boiler.

Heat (only) Boiler – See explanation for Regular Boiler.

LPG (Low Propane Gas) Conversion Kit – An LPG conversion kit is used to allow a boiler to be swapped from mains gas to low propane (LGP) bottled or bulk storage.

Regular Boiler – A regular boiler provides heating and hot water through a hot water storage cylinder. The hot water cylinder is often located in an airing cupboard and the cold water tank can usually be found in the loft. This type of boiler is perfect for homes with multiple bathrooms due to the ability to provide a lot of hot water at once. For more information on the different types of boilers read our different types of boilers explained.

RS (Room Sealed) – RS is an acronym for room sealed which means the air for combustion and the flue products are moved to outside the property and are not influenced by internal conditions.

Standing Heat Loss – Standing heating loss refers to the amount of energy which is lost through the hot water storage tank and insulation when no water is being used.

System Boiler – A system boiler is one of the different types of boilers. It heats your central heating system and produces hot water for your cylinder. It operates in a similar way to a regular (conventional) boiler. However, it is different as it is a fully pressurised boiler and will need filling via a mains cold water connection (filling loop) and the heating pump that circulates the hot water around your radiators will be included within the boiler case.

Thermostat – A thermostat measures and controls the temperature in a heating system.

User Interface – A user interface refers to the controls on the front of your boiler that allows you to change the temperature settings.

Wireless RF Digital Timer – A wireless RF digital timer is a method of controlling the central eating using an electronic control powered by batteries which doesn’t require wiring and communicates via radio waves.

At Woods Building Maintenance, our heating experts have wrote helpful articles covering the top topics such as:

New Boiler Installation Quote from Woods Building Maintenance

When should you replace your boiler? If your problematic boiler is on the blink then it may be time to look at buying a replacement boiler for your home. Typically, a boiler should last up to 15 years old or even older if it is well maintained and in a good condition. Just how long your boiler will last will depend on several factors including the type of boiler and its service history.

Here at Woods Building Maintenance, we offer unbeatable deals on all new and replacement boilers. To request a free boiler quote please call us on 0330 3530 365 or simply fill in our boiler quote form. to receive a free no obligation quote. If you choose to go ahead with the quote, we can install your new boiler within just 24 hours of your enquiry.

Book your Boiler in for an Annual Service

Book your annual boiler service in with Woods Building Maintenance. All of our Gas engineers are on the Gas Safe Register so, you can have peace of mind that all boiler services carried out by us are completed safely and efficiently to the highest standard without compromising on quality. Call us today on 0330 3530 365 and one of our friendly advisers will book your annual boiler services in for a date and time that suits you and will minimise disruption to your day. Alternatively, you can use our online boiler service booking form to arrange your service.

The importance of having an annual boiler services is overlooked and too many people don’t have their boilers checked regularly. Here’s 5 reasons to book an annual boiler service.

Reactive Maintenance Company

Woods Building Maintenance are a reactive maintenance company based in Wakefield, West Yorkshire. We offer a wide range of reactive maintenance services to both domestic and commercial properties throughout the North of England. Our maintenance services are available 24/7, 365 days a year supported by our own 24/7 helpdesk.

Our services include:

Since incorporation, we have been providing exceptional maintenance services at the lowest possible cost without compromising on quality. We have worked extremely hard to build up our fantastic reputation and are proud to be one of the North of England’s leading and most reliable reactive maintenance companies. From the moment you contact one of our helpdesk advisers you will receive first class customer care. We have achieved a number of industry recognised certifications including NICEIC, CHAS, SafeContractor, Gas Safe Register and many more.

If you feel our reactive maintenance services may be able to support your requirements, please call our office on 0330 3530 365 or contact us online.

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