Types of Boilers

When it comes to upgrading your heating system, choosing the right type of boiler is essential for both performance and efficiency. Below, we explore the most common boiler types used in UK homes, along with their key features and considerations.

A Guide to the Different Types of Boilers

Whether you're upgrading an old system or installing a boiler in a new property, choosing the right type is key to long-term comfort, energy efficiency and cost control. From compact electric models to high-capacity system boilers, each type has its own strengths and suitability depending on your household size, water usage and available fuel supply.

Below, we explore the most common types of boilers available in the UK, helping you make an informed decision for your home.

Gas Boilers

Gas boilers are the most widely used type of heating system in the UK. They work by burning natural gas to heat water, which is then circulated through radiators and taps. Thanks to condensing technology, modern gas boilers can reach up to 98% efficiency, recovering heat that would otherwise be lost through the flue.

Gas boilers are ideal for properties connected to the gas mains and offer fast heating with relatively low running costs. They are available in different configurations to suit household size and layout, including combi and system models.

Combi Boilers

Combi boilers, short for combination boilers, are a popular choice for smaller homes and flats. They combine central heating and hot water in one compact unit, heating water directly from the mains when needed. This means there’s no need for a separate hot water cylinder or cold water tank, making them ideal for homes with limited space.

They offer convenience and energy efficiency, with hot water on demand and reduced heat loss. However, combi boilers can struggle with high simultaneous demand, so they may not be ideal for homes with multiple bathrooms or frequent hot water use at the same time.

System Boilers

System boilers are a great option for medium to large homes that require a constant supply of hot water to multiple taps or showers. They work alongside a separate hot water cylinder, providing strong water pressure throughout the home without needing a cold water tank in the loft.

This setup is more compact than traditional regular boilers and allows multiple outlets to be used at once. System boilers are perfect for families or larger households where efficiency and consistent hot water are a priority.

Oil Boilers

Oil boilers are a popular solution for rural and off-grid homes where gas mains aren't available. These systems operate in much the same way as gas boilers, but they burn heating oil stored in a nearby tank. They are available as combi, system and regular models and are particularly useful in larger properties with higher heating demands.

While oil prices can fluctuate, modern oil boilers are efficient and reliable. However, you’ll need to arrange for oil deliveries and make space for a storage tank, which also requires regular maintenance to remain safe and efficient.

Electric Boilers

Electric boilers are gaining popularity due to their simplicity and compatibility with green energy sources. These systems use electricity to heat water directly and are known for being 100% efficient at the point of use, as all electricity is converted to heat.

Electric boilers don’t require flues, fuel deliveries or storage tanks, making them perfect for smaller properties or homes with limited space. While the cost of electricity is higher than gas, the UK’s increasing reliance on renewables means electric boilers are becoming an environmentally friendly option for the future.

Need Help Choosing the Right Boiler?

At Adrian Plumbing & Heating, we offer professional boiler installations tailored to your home’s layout, water usage and energy goals. Whether you're considering a gas, oil, electric, combi or system boiler, our experienced team is here to guide you every step of the way.

We only install trusted boiler brands and can help you compare models to find the perfect fit. Based in Oxford and serving surrounding areas, we pride ourselves on reliable workmanship, honest advice and responsive customer care.

Call us today on 07958 221103 to arrange a free home survey or request a personalised boiler quote.

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