Boiler Advice from Boilers and Spares
Not sure which boiler is right for you? Then take a look at our guide to different types of boiler so you can make an informed decision and choose the ideal boiler for your home or business premises. If you’d like to know more, then simply give us a call on 0845 003 8281 or email here and a member of our expert team will be only too happy to advise you.
A combi boiler provides heating and hot water directly from the boiler.
This diagram shows a central heating and hot water system layout using a combi boiler:
Combination boilers are a great way to save space in your home and can provide ample heating and hot water for most types of household. Combi’s are becoming increasingly popular in the UK and are a combination of central heating boiler and high-efficiency water heater, which means there’s no need to install a separate hot water cylinder.
The advantages of a combi boiler include:
What is a regular boiler?
Regular boilers heat your central heating system directly and produce hot water for your cylinder.
This diagram shows a central heating and hot water system layout using a regular boiler:
Regular boilers directly heat your home and produce hot water for your water cylinder. Regular boilers are an older system, so if you’re replacing a boiler the chances are it will be one of these. Regular systems generally include a boiler, extended controls, and a hot water cylinder that’s usually fed by a cold water tank in your loft. Although modern regular boilers are more efficient, one disadvantage is the amount of space they take up.
What is a system boiler?
A system boiler heats your central heating system directly and produces hot water for your cylinder.
Here is a diagram showing an example of a central heating and hot water system layout using a system boiler with an open-vented hot water cylinder:
Here is a diagram showing an example of a central heating and hot water system layout that is using a system boiler with a pressurised unvented hot water cylinder:
A system boiler is similar to a regular boiler in that it heats your central heating system and water for your cylinder. However, system boilers come in two varieties – either with an open-vented hot water cylinder or a pressurised unvented water cylinder.
Just like a regular boiler, system boilers work on the principle of stored hot water, but a system boiler differs from a regular boiler in some important aspects.
Firstly, the majority of the components necessary to run a system boiler are built in to boiler, so they’re quicker and easier to install and don’t take up as much space.
Secondly, hot water is pumped through the system to radiators and the hot water cylinder, which means they take effect more quickly and are cheaper to run. When you choose a system boiler you won’t need a feed and expansion system.