The smarter way to replace your boiler

  • Get FREE Quotes today
  • Compare quotes & save money
  • Over 5,000 engineers across the UK
Tell us about your job
Get Free Quotes

Zanussi Ultra System Boiler

The Zanussi Ultra System comes in a range of outputs to suit your hot water needs.

If you use a lot of hot water at home and you have more than one bathroom, the Zanussi Ultra System could be the perfect boiler for you. Available in an array of outputs, this boiler can deliver constant hot water for taps and radiators when fitted alongside a hot water storage cylinder. Not only is it easy to install but it’s also a highly reliable and efficient system with some impressive features and a lengthy parts and labour warranty.

How Much Does this Boiler Cost?

The Zanussi Ultra System typically costs between £490 and £790 including VAT, and the price depends on whether you require the 15kW, 18kW, 24kW or 30kW model. You need to pay for the fitting work too, which could set you back another £500 to £1,600. Before you purchase this combi boiler, contact a range of local and national installers for a fixed-price quote on the boiler with installation to enable you to compare prices and get the best deal. As the Zanussi Ultra System is a gas-fired boiler, you must only get quotes from Gas Safe registered engineers and businesses.

How will I know if this Boiler is Suitable for My Home?

Zanussi’s Ultra System uses an external cylinder to store hot water, meaning this boiler requires additional storage space. You need to have the correct size cylinder to avoid running out of stored hot water, and most people keep their cylinder hidden way in the airing cupboard or a utility room. Since this boiler comes in a variety of outputs and can cope with high hot water demand, it’s ideal for small, medium and large-sized homes with multiple bathrooms. If you currently have a system boiler, replacing it with the Zanussi Ultra System should be straightforward swap.

If you’re unsure about what boiler type and size are better suited to your home and needs, just ask a Gas Safe registered engineer to visit your home and work this out for you.

Is it a High Efficiency Boiler?

This ErP compliant system boiler from Zanussi is A-rated for both heating and hot water, making it perfect if you want to save money on your bills and do your bit for the environment at the same time. It’s a fully modulating boiler and can adjust its heat output by itself to meet your requirements, helping to save energy and reduce your gas bills.

Does this Boiler have a Good Range of Controls and Features?

The Zanussi Ultra System has a digital display and simple diagnostics, along with built-in frost protection and condensate trap. It comes with a simple diverter valve design, the latest generation Honeywell gas valve and two-stage flame sensing for better reliability. This boiler is easy to install and has a range of flueing options, a pre-wired mains lead, preformed copper tails, concealed pipe connections and universal condensate connection. Stand-off and pre-pipe options are available too, and the boiler has a low lift weight and compact ‘cupboard fit’ dimensions.

How long is the Warranty on this Boiler?

Zanussi has a 10-year warranty option available on its Ultra System boiler and the warranty registration has to be completed by a Gas Safe engineer.

Summary of Important Information

  • Expect to pay between £490 and £790
  • Heating output of 15kW, 18kW, 24kW or 30kW
  • Dimensions of 700mm (H) x 395mm (W) x 278mm (D)
  • Uses gas as its fuel source
  • A-rated for efficiency
  • 10-year warranty as standard

Pros and Cons

If you’re looking for an affordable energy-efficient system boiler for your home, the Zanussi Ultra System won’t break the bank. We also like that it comes with a generous warranty as this gives you peace of mind that you’re covered if you should have a problem within the first 10 years. Even though there aren’t many reviews for Zanussi boilers online, the brand has an average rating on Trustpilot, so be sure to do your research before you purchase the Ultra System.


  • Considerably cheaper than some other gas boiler brands
  • Suited to small, medium and large-sized homes
  • Can handle high hot water demand with ease
  • Easy to install, use and service
  • Fully modulating operation to low outputs
  • Frost protection
  • Two-stage flame sensing for greater reliability
  • Latest generation Honeywell gas valve
  • Provides maximum energy efficiency – reduce fuel bills and carbon emissions
  • 10-year warranty


  • Average rating on Trustpilot – correct at time of writing this in November 2020
  • Requires separate cylinder
Get Zanussi Boiler Quotes

Get quotes to supply a new Zanussi boiler now