It might be difficult to know which boiler to buy, or even what boiler you have if it was installed before you moved home.

There are several various types of boilers available, so let’s go through what they are and how they differ.

We’re just going to look at three different types of boilers – the three most popular in domestic settings.

These are the following:

  • A regular boiler
  • A system boiler
  • A combi boiler

What is a regular boiler and how does it function?

The regular boiler is perhaps the most common type of boiler on the market – it’s even called that! This sort of boiler is commonly found in older homes that haven’t upgraded to a more contemporary boiler or heating system.

A regular boiler merely produces heat. This heat is then used to either heat your home’s radiators or the hot water cylinder’s stored water. When you use hot water, it comes from the hot water cylinder and is distributed to your taps.

Because the hot water is stored, you must use energy to heat and maintain the temperature of the water so that it is available to use when you need it. In a typical open vent hot water system, the stored hot water is not used to heat the radiators.

The pump and control valves are not included within the boiler in a regular boiler. As previously stated, a regular boiler system also requires a hot water cylinder, therefore it takes up a lot of room.

What exactly is a system boiler and how does it function?

The system boiler is more commonly found in larger homes since it is better at providing the heating demands of a larger family. It is capable of supplying several hot water outlets (for example, multiple bathrooms, with water at the same time).

Boilers, both regular and system, are flexible – You have three options for fueling them:

  • Natural gas
  • Oil
  • LPG

The only significant difference between a system boiler and a regular boiler is that the system boiler’s pump is located inside the boiler (whereas the regular boiler’s pump is located elsewhere), but the heating system control valve is still located outside the boiler. System boilers still have a hot water cylinder, which they use to heat the radiators directly and supply hot water to the taps. (The hot water cylinder is not used to give hot water to the radiators, as it is with a regular boiler.)

Regular and System boilers are basically interchangeable because they both use the same fuels. The only variation would be the location of the pump.

What exactly is a combi boiler and how does it operate?

The combination boiler, often known as a combi boiler, provides your home with both heating and hot water via a mains connection.

They’re essentially a combination of a central heating boiler and a demand flow hot water heater. It is not necessary for them to have a hot water cylinder. When a hot water tap is turned on, the boiler monitors the flow of water and uses a heat exchanger to heat the cold water flowing through the boiler, supplying hot water to the hot taps.

It heats the radiators similarly to a regular or system boiler while in central heating mode. The combi boiler heats the water for central heating based on ‘what it’s been told to do’ – either what it’s been programmed to do or via a room thermostat.

The combi boiler is the most frequent type of boiler in domestic homes in the UK market because it combines a water heating system and a central heating boiler system.

Combi boilers are popular because they deliver all of your hot water and heating from a single unit. There are no hot water tanks like the regular or system boilers we just discussed.

It can also run on a variety of fuel sources, including;

  • Natural Gas
  • Oil
  • LPG

What are the benefits of using a Combi boiler?

From what we’ve discussed so far, you’ve undoubtedly figured out some of the obvious benefits of a combi boiler. There are a variety of reasons why a combi boiler may be a better option for your home.

  • Heat Only When Needed — Because the hot water isn’t stored, you don’t have to heat it all the time to have it available. When the boiler detects that the water is running, it heats it.
  • One unit – Combi boilers combine heating and hot water production into a single device. Because they don’t require a hot water cylinder or additional pumps, they take up less room as a system than a standard or system boiler. As a result, they take up less room in your home and require less pipes during installation.
  • Speed and convenience – Combi boilers may deliver fast heat to your radiators as well as hot water to your faucets. They are the quickest boilers on the market.
  • Ideal for Smaller Homes — Combi boilers are ideal for smaller homes, such as flats or apartments. (You may have read elsewhere that this boiler doesn’t function as well with numerous hot water demands in larger buildings with more than one bathroom.) However, combi boilers are often sized to meet the needs of the property, thus one with a higher power output would be matched to meet higher hot water heating demands).
  • Condensing Combi Boilers – Condensing boilers are standard on all new combi boilers. All newly installed combi boilers must now be condensing boilers, according to the law. This is to aid in the improvement of efficiency. A condensing boiler recycles waste exhaust gases produced during operation, as well as water vapour and steam, and re-uses them throughout the system. As a result, some heat and water are retained, making it a more efficient boiler alternative. (If you’re replacing a conventional or system boiler, you’ll need to upgrade to a condensing boiler as well.)

If you’re reading this blog because you need a new boiler, visit our website and fill in our contact form to request a quotation.

Call our friendly customer service staff on 0117 330 3000 if you’d like to speak things over with someone directly.