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Vaillant Unistor Heat Pump Cylinder

From £972.59
Now £972.59
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
In stock, ready to be shipped
Vaillant Unistor Heat Pump Cylinder
From £972.59
Now £972.59
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Call our product experts 01268 567016

Vaillants uniSTOR heat pump cylinder range is designed to work in harmony with Vaillant heat pumps and provide highly efficient heating and hot water systems. Featuring state-of-the-art insulation as well as a 100% recyclable stainless steel shell, uniSTOR heat pump cylinders give you a robust and sustainable system solution to support your Vaillant heat pump. All Vaillant hot water cylinders are manufactured in line with standards that are maintained by the Hot Water Association.

The cylinders range from 150 up to 300 litres, so they're suitable for a wide range of properties with different hot water demands
Specifically designed to work alongside Vaillant heat pumps
Unique integrated coil system ensures maximum heat transfer and helps to reduce running costs and increases hot water performance
The cylinders are made from 100% recyclable stainless steel with an ultra-hard-wearing outer shell that comes with a 25-year guarantee
Available in a range of sizes from 150 to 300 litres

Unistor 150L Heat Pump Cylinder

150L 200L 250L 300L
 Height 1000mm 1265mm 1535mm 1745mm
Diameter 595mm 595mm 595mm 595mm
Weight Empty 35.0kg
42.0kg 52.0kg 56.0kg
Weight Full 184kg 240kg 297kg 343kg
Actual Water Capacity 145L 194L 245L 284L
Heat Loss 0.86kW/24hrs 1.22kW/24hrs 1.41kW/24hrs 1.59kW/24hrs
Coil Output 17.2kW 16.69kW 16.6kW 16.5kW
Primary Flow Rate 900L/H 900L/H 900L/H 900L/H
Re-Heat (70%) 18.6 mins 22.1 mins 30.3 mins 34.0 mins
Heat Up 15 to 60°C 26.6 mins 31.6 mins 43.3 mins 48.5 mins
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Free delivery on all orders

At The Underfloor Heating Store, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.

We're proud to offer free delivery on all of our orders.

Your delivery option for this product is 5-10 working days.

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30 days returns policy

At The Underfloor Heating Store, our customers have 30 days to upgrade, replace or refund their orders.


At The Underfloor Heating Store, we want to ensure you are happy with every purchase you make. If you have any issues with your chosen product, whether damaged, faulty or simply an unwanted item, you can simply return what you bought for a refund. Learn more.


We take great care in the delivery of all of our products, however, in the event of your delivery arriving damaged or if you notice a manufacturing fault of any kind within 48 hours of delivery, you're within your rights to a replacement. Learn more.


Within 14 days of purchasing from us, you are eligible to upgrade if you deem you want something a little better. Simply send it back to us brand new and we'll happily assist you with an upgrade to your order. Learn more.

Lifetime warranty

At The Underfloor Heating Store, we are committed to providing our customers with high-quality products and outstanding customer service. That's why we offer a comprehensive warranty on all of our underfloor heating products, with a lifetime warranty for our ProWarm range of products.

Our warranties are designed to give you peace of mind and ensure that your underfloor heating system operates reliably for years to come.

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We'll beat any price

At The Underfloor Heating Store, our main priority is customer satisfaction. To cement our commitment to this, we are proud to offer our Underfloor Heating Price Match Promise. If you find a lower price on an identical product anywhere else, we will match it – guaranteed!

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