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Boiler Types
Boiler Types

System Boilers

What are the differences &
benefits of a system boiler?

System boilers, often referred to as ‘closed vent’ or ‘sealed system’ boilers, need a hot water cylinder. Unlike regular boilers, however, they don’t need a cold water tank.

And another key difference with regular boilers is the housing of components, such as pumps and valves, in the body of a system boiler.

Again, your decision on system boilers will depend on the size and type of your property and the number of people you live with.

Pros of system boilers

  • Better for larger homes – as with regular boilers, system boilers are worth considering if you have more than one bathroom and people often needing to use hot water at the same time
  • Space savers –  you won’t need the space for a large cold water tank in the loft, so an advantage over regular boilers

Cons of system boilers

  • Need more space than a combi boiler – you’ll still need to find room for a hot water cylinder
  • No instant hot water guaranteed – either plan ahead or wait for the water in the cylinder to heat up
  • Temporary hot water shortages – system boilers are not the best choice if your home typically has lots of people using hot water at the same time
  • Less energy efficient – you’ll lose heat from the stored hot water in the hot water cylinder

Give our friendly, experienced team a call today if you’re considering a system boiler for your property.

  • Ideal Logic+ S15 System Boiler

    Part of Ideals Logic+ flagship range, the Logic+ S15 system boiler provides a reliable sealed system solution for the ultimate in home comfort and total peace of mind. Featuring a lightweight and compact size, this high efficiency boiler has been designed for quick and hassle-free installation even into a standard kitchen cupboard.

    • 7 year manufacturers warranty
    • Compact and stylish cupboard fit design
    • Wide range of flueing options
    • Fully modulating operation down to 4.8kW
    • Built-in frost protection
    • User-friendly control panel with digital display
    • Choice of optional timers and room thermostats
    £1,850 Including VAT & installation
    Ideal Logic Combi Boiler
  • Worcester Greenstar 4000 12 System Boiler

    The Worcester Greenstar 4000 12 condensing system boiler, a delightful option for those with medium to large-sized homes accompanied by a heating system that boasts a stored hot water cylinder. Embracing its compact and featherweight design, it bestows upon you the gift of effortless and versatile installation. Oh, but that's not all! excelling in user comfort and economy, a choice of optional controls await your selection. this boiler graces your home with warmth and efficiency!

    • Compact, space-saving dimensions
    • Built-in pump and expansion vessel
    • Plug-in optional diverter valve
    • Range of optional controls
    £2,000 Including VAT & installation
    Worcester Bosch Greenstar 4000
  • Vaillant ecoFit Pure 615 System Boiler

    Vaillant ecoFit Pure system boilers, a testament to engineering excellence. The most compact boilers ever crafted by Vaillant, simplicity in installation and flexibility with top or rear flue choices. the ecoFit Pure 615 system boiler boasts a feather-light weight, answering the call of installers and end-users alike, craving smaller, nimble appliances, a great choice

    • Compact dimensions and light weight
    • Top or rear flue options
    • Excellent siting versatility and easy installation
    • High efficiency pump for reduced energy consumption
    • Standard 2 year warranty extended to 5 years if fitted by a Vaillant Advance installer
    £1,800 Including VAT & installation
    Vaillant ecoFit Pure 615 System Boiler