

Unsure of the difference between a system, heat-only, and combi boilers? You’re not alone. Many homeowners are confused by the three types of boilers. But don’t worry – we’re here to help.
Both have their pros and cons, but which one is the best fit for your home? In this blog, we will discuss the difference between system, heat-only boilers, and combi boilers so that you can make an informed decision about which type of boiler is right for you.
What is a system boiler and what are its benefits?
A system boiler uses up much less space than a regular boiler. This is because it combines the cistern tank, along with other features of the boiler. System boilers are often used by those in larger homes.
As a system boiler already encompasses many features, they are quicker and easier to install, with much less piping. Because the hot water from this system boiler is pumped through the radiators and the hot water cylinder as needed, it has a faster response than traditional boilers.
What is a heat-only boiler and what are its benefits?
Heat-only boilers are the most common type of boiler in the UK. They work by heating water that is stored in a tank. This hot water is then circulated around your home via a system of pipes. The benefits of heat only boilers include the following:
- They are less expensive than combi boilers
- They are easier to install
- You have a constant supply of hot water
- You can choose when to heat your home as the boiler is separate from your heating system
What is a combi boiler and what are its benefits?
A combi boiler, also known as a combination boiler, is a highly efficient way to heat your home. It works by heating water on demand, meaning you only use energy when you need it. This makes combi boilers more energy-efficient than system heat-only boilers. The benefits of combi boilers include the following:
- You have a constant supply of hot water
- There is no need for a hot water tank, saving you space
- They are more energy-efficient than system heat only boilers
- They take up less space than system heat only boilers
How can choose the right type of boiler for my home?
The best type of boiler for your home will depend on several factors, including the size of your home, how many people live there, and your hot water and heating requirements. If you’re not sure which type of boiler is right for you, we recommend speaking to your local qualified heating engineer or calling The Boiler Doctor on 01904 206 190 today.
What are the cost of system heat-only boilers and combi boilers?
System heat-only boilers are typically less expensive than combi boilers. However, the initial cost is not the only factor you should consider when choosing a boiler. The running costs of a boiler are also important. Combi boilers are more energy-efficient than system heat-only boilers, so they may save you money in the long run.
At The Boiler Doctor for a like-for-like combination boiler swap prices start at £2000, and if you want to upgrade from a heat-only system to a combi boiler prices start from £3000.
We believe in being completely transparent with all of our prices, so you know exactly what you will be paying before our engineers turn up to do the work.