Vaillant's uniSTOR Slimline Cylinders
Vaillant’s all new range of UK made uniSTOR Slimline cylinders are sure to be popular among installers and homeowners alike. The new form factor design means a smaller footprint that offers much more flexibility for both transporting materials and installation options in a property.
This new generation of high recovery cylinders have been designed with efficiency and simplicity in mind. With a higher recovery coil inside and convenient labels/ front facing connections, you can be sure to have a quicker installation experience than ever before!
This range is also flexible with all Vaillant Heat Pumps and domestic boilers too, and also includes internal and external expansion options. Another great new feature is a 30 litre stackable buffer which can be fitted above or below to reduce space.
FEATURES THAT MATTER TO YOU
Key Features
- Expansion Vessel – Quick to install and maximises space
- Improved Efficiency – Large coil maximises heat transfer
- Available in outputs from 90 to 210 litres
- Pre-plumbed options available
This new generation of slimline cylinders is a welcome addition to the Vaillant range that will speed up installation times and provide a host of improvements on heating efficiency. The addition of a vertical mounted buffer is also a smart design choice that is a favourite of ours!
Technical Specifications
CUTTING EDGE DESIGN AND TECHNOLOGY
Outer Diameter – 490mm
Net Weight – Between 32.9 – 58.9kg (Depending on size)
25 Year Guarantee – Anti-corrosion on internal stainless-steel tank
Vaillant Support – Tutorial videos available for installation
Labelled Connections – Easier to recognise
WHAT WE THOUGHT
Overall Review

The new slimline design from Vaillant is very popular here at EcoFuture and the quality of life changes which have been implemented is a welcome addition for our installers. The great idea of having labelled connections will be an instant benefit for installing in tight spaces, and the slim form of the cylinder will naturally be very useful for installation locations.
Clients will also see further benefits with the larger high recovery coil inside. With a bigger surface area to play around with, the new coil will allow for better heat transfer times to the water stored inside.
Not only will the heating times be quicker, but our clients will also notice a reduction in heat loss as well. This is all thanks to the improved insulation that has been added to reduce heat loss when the product isn’t actively heating the stored water.
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