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 and makes it simpler to install. System boilers and are usually found in modern homes with multiple bathrooms. 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 you will be based on your property size and your budget. We compare prices, sizes, efficiencies and warranties on 64 models of system boiler from eight leading manufacturers, including Worcester Bosch, Baxi, Ideal and Vaillant, to find the best value system boiler for you.
System Boiler Guide | We Compare Prices on 64 Boiler Models
What is a system boiler and who offers the best system boiler prices in 2018?
Overview of System Boilers
The tables are arranged so that you can easily find your property size and then find who offers the best boiler package for your budget. The tables show boiler performance alongside warranty period and price so you can find the best value boiler. Most boiler manufacturers produce one or two models of system boiler with outputs between 12kW and 40kW. At the smaller end, the price difference between the budget and premium models is quite small. However the disparity grows signficiantly for the larger models.
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%|
In all cases we have considered only wall hung regular boilers