Gas System Boilers

Designed to deliver exceptional performance and energy efficiency, gas system boilers are an ideal option for properties with high hot water demands. 

At City Plumbing, we have a range of system boilers for sale online and available for collection from hundreds of UK branches. Browse brands such as Baxi, Vaillant, or Worcester Bosch and choose the right gas boiler heating system for you.

All orders over £75 receive free delivery, or you can choose our handy Click & Collect service. 

A gas boiler system provides hot water for radiators and taps by heating water from the mains supply. Unlike a regular boiler, a system boiler has many of its key components built into the unit. This makes it a space-saving and cost-effective choice for homes of all sizes.

Removing the need for a separate feed tank means system boilers can streamline your heating system, ensuring quicker installation and less maintenance. Ideal for households with high water usage, these boilers provide a steady supply of hot water to multiple taps and showers simultaneously without compromising on performance.

We have several gas system boilers for sale that are supplied by some of the industry's leading brands. Heat outputs range from 11-80kW, and we offer a range of sizes that suit all budgets. 

The Vaillant Ecofit Sustain 830C Erp Boiler offers an excellent size-to-output ratio, with compact cupboard fit dimensions and a low lift weight. Its four-sided cooling reduces stress on all components to reduce maintenance costs. 

Alternatively, the Ideal Logic S24 24kW System Boiler boasts 94% Erp central heating efficiency. It features a built-in service timer, concealed connections and is fully compatible with easy-to-fit Halo controls.

When you purchase a new boiler, you must be assured of its reliability. That's why we've got you covered with guarantees ranging from one to 10 years.

With over 350 branches across the UK, you’re never too far from us. We have more than 40 years of experience in the industry so you’re in safe hands. Our specialist team is expert in the field and can offer sound, reliable advice at our branches.

We pride ourselves on the quality of our service and that commitment has been recognised in our rating on Trustpilot. Whether you're seeking advice on system boiler costs or browsing our extensive range of products, rely on City Plumbing to help you find the solution.

Browse our new gas system boilers for sale online and take advantage of our free delivery on all orders over £75. For extra convenience, opt to use our Click & Collect service.

For any particular product advice, speak to us in person, using our branch finder to locate your nearest showroom. For more general queries, please get in touch with our friendly team.