The Vaillant 615 Plus 15kw System Boiler Review

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This 15 kw system boiler from Vaillant is best suited to small – medium sized houses that have relatively small heat loads. Vaillant offer the 12kw smaller model, and 18kw model as other close alternatives. Hassle Free Boilers will help you choose the perfect boiler for your home. These system boilers, which are sometimes referred to as sealed system boiler provide central heating and hot water via a hot water cylinder in the loft/attic.

Features and Benefits

  • Ultra-efficient 89.2% Efficiency Rating SAP
  • A-rated Boiler Could Mean £200 + Gas Bill Savings
  • Reduced Carbon Footprint By Up To 1,265 kg CO2
  • Push-Button Intuitive Programming
  • Vaillant Premium Components Mean Greater Durability
  • 5 Year Standard Warranty
  • Lifetime Guarantee with our HFB Cover Plan

How It Works

Because of the advances in efficiency that Vaillant have achieved with this range of system boilers, typical home-owners can expect to achieve yearly savings on their gas bills of as much as £255* as well as an environmentally friendly reduction in carbon emissions of 1,265kg of C02.

Installation usually takes between one and two days, although this can vary if some of your pipework or radiators need to be replaced which can sometimes add another overall bump in your central heating efficiency.

What You Need to Know

Vaillant, who design their boilers in Germany and manufacture them in the UK, have built their range of system boilers with usability, reliability and efficiency as their highest priorities. Although the system boilers require a hot water storage tank, they usually don’t require a cold water storage tank as this is fed straight in from the mains.

Because of the quality of the components and highest standards of manufacturing and design that Vaillant adhere to this boiler runs as very low noise levels and was subsequently awarded with the coveted Quiet Mark seal of approval. If you are planning on running more than one hot water faucet at one time them a system boiler is the way to go, when compared to the combi boiler that heats water on demand, and this model may be an excellent choice for your home.

If you’re unsure about the correct size of boiler that you need to install then please contact us immediately. We can help you find the perfect sized boiler based on heat load calculations, the number of bathrooms and house occupants as well as your hot water habits. Hassle Free Boilers are proud that we can offer you these amazing Vaillant boilers, at great prices, with a wide range of financial options available, because of the great relationship we’ve built with Vaillant.