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 4.7 stars

1,263 reviews

 4.7 stars

1,263 reviews

Mistral Sealed System Non-Condensing S2 26kW Oil Boiler

Mistral Sealed System Non-Condensing S2 26kW Oil Boiler Boiler
Typical Price (inc VAT)
£1,380
Typical installation Cost (inc VAT)*
£1000 - £1500
Sundries (Filter, Flue, etc)
£300
Total Cost
£2,680 - £3,180

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Make Mistral
Model Sealed System Non-Condensing S2 26kW Oil Boiler
Is Condensing Non-Condensing
Efficiency Rating 87%
Band Rating B Rated
LPG Compatible No
Standard Warranty 2 yr. parts - 5 yr. heat exch
Central Heating Max. Output 26kW
Mounting Floor Standing
Flow Rate N/A
Typical Price (inc VAT) £1,380
Typical installation Cost (inc VAT)* £1000 - £1500
Sundries (Filter, Flue, etc) £300
Total Cost £2,680 - £3,180
ERP Rating B Heat

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

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Product Description

The Sealed System S2 is a non-condensing, floor-standing oil boiler that’s been designed and manufactured by Mistral. Housed in a high-quality white casing, this is a compact unit, measuring at only 410mm wide, that can be neatly tucked under a work surface with ease.

This is a highly efficient unit, with an efficiency rating of 93% and A rating. With an output rating of 26kW, this System boiler is perfectly suited to smaller homes with one bathroom that don’t have such a high demand for heating and hot water. If you have a higher demand for heating and hot water, you’ll need a bigger output, which you can find within this range as 15kW to 41kW outputs are also available. You get a lot of choice with the boilers in this range as there are condensing and non-condensing options as well as internal and external units.

There are many features in this unit, including a pre-installed water heating system, circulating pump, 12 litre expansion vessel, safety valve, pressure gauge, automatic air vent and pre-punched pipe entry points that can be positioned at the side and back helping to allow for a quick and easy installation. Also included is a 2 or 4 port option, front servicing, conventional or balanced flues, a pre-punched pipe access point and it can be used in tandem option.

As this is a System boiler, it directly heats your central heating system and hot water for a storage cylinder. Most of the important parts of the hot water and heating system, such as the pump and expansion vessel, are built-in, making it quicker and cleaner to install. You’ll also get a fast response to demand for heating and hot water, plus, you don't need to have a feed and expansion tank in the loft.

This highly reliable unit comes with a 5 year warranty, so you can trust that this boiler isn’t going to be letting you down.

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Excellent 4.7 out of 5

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