System boilers are usually found in modern homes with multiple bathrooms. A system boiler works with an unvented hot water tank. Unlike a 'heat only' boiler the main system components are integral to the boiler. This provides for a more comprehensive boiler warranty from the manufacturer. Prices range from around £580 for an entry-level boiler to nearly £1,600 for a large, premium range model. The best system boiler for your circumstances will be based on your property size and your budget. In this guide we compare prices, sizes, efficiencies and warranties on 64 models of system boiler from nine leading manufacturers, including Worcester Bosch, Baxi, Ideal and Vaillant, to find the best system boiler for you. Once you have reviewed individual boiler prices, why not try our bespoke Boiler Quote Calculator for a full installation cost.
System Boiler Guide | We Compare Prices on 64 Boiler Models
What is a system boiler? Who offers the best system boiler prices in 2019?
Overview of System Boilers
System boilers suit properties with multiple bathrooms, particularly where they are in use simultaneously, for example people showering in the morning. System boilers provide good hot water flow rates from a high performance cylinder. Many new build properties have system boilers with unvented hot water systems, replacing your boiler will be a straight swap. For those considering installing a system boiler in place of their combi boiler, this is worth while when you are extending and adding bathrooms. You will need to find a spot for the hot water tank and preferrably close to the bathrooms. For those with a conventional heat only boiler, you will need to change the boiler and the copper cylinder.
In the example table below, it is easy to see that the Vaillant ecoTEC plus at £772 is great value with a 7-10 year guarantee, compared the next cheapest and next most expensive, which only offer a 2 year warranty.
|1-2 bed flat||Price||Standard warranty||Free extended warranty||Central heating output||Efficiency|
|Glow Worm Energy System||12||£712.00||2||2||12||89%|
|Vaillant ecoTEC plus system
|Potterton Promax System||12||£794.00||2||2||12||89%|