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System Fluid

Designed to protect against corrosion, limescale and biocidal protection while being frost resistant, heat transfer system fluids have a direct and long-lasting impact on the air source heat pump’s performance and longevity.

Whether you need system fluid for an air or ground source heat pump, get a good deal on heat transfer system fluid when shopping at BES. With great prices, fast shipping and free returns, shopping with us couldn’t be easier.

Helping you find the heat transfer system fluid you need

Most heat transfer system fluids are concentrated liquids made of an aqueous solution of mono-propylene glycol with specifically formulated inhibitors and stabilisers.

The most popular heat transfer system fluid we have here at BES is Fernox HP-EG concentrated heat transfer fluid that comes in a 20 litres bottle. Before use, it needs to be diluted with mains water to provide the required frost protection. We recommend following the instructions on the product’s label to ensure you obtain the desired concentration.

All the air source systems products you need

Running an air source heating system efficiently involves many things, so at BES, we’ve worked hard to ensure our customers find parts and fittings for their renewable air source systems as quickly as possible.

Our full range includes valves, controls, filter and vent, pipe insulation, pipe & fittings and consumables, all suitable for air source heating pump installations.

You can also view our entire range of renewable heating & ventilation products here.

Why choose BES

We are proud to have been a trusted partner to those in the trade for over 45 years and intend to be there for them for as long as possible. At BES, we don’t just help get the parts needed for the air source system, but we ensure we get them for as low a price as possible.

With an Excellent rating from Reviews.co.uk and with over 15,000 products in stock, you’re guaranteed to get what you need when you need whenever you shop at BES.

Need help finding heat transfer fluid for your air source heating system?

BES aims to get your system fluid delivered as quickly as possible. Next-day delivery is available on thousands of products, with free delivery on qualifying mainland UK orders.

If there is a specific item you’re not finding, please contact us, and we’ll be happy to help you source it or find something appropriate.

fernox hp eg concentrated heat transfer fluid 20 litres 26095

Fernox HP-EG Concentrated Heat Transfer Fluid - 20 Litres Part Number: 26095

£144.88 £120.73

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CURA Concentrated Heat Transfer Fluid - 10 Litres

CURA Concentrated Heat Transfer Fluid - 10 Litres Part Number: 26266

Was £86.38 £71.98 Now £75.59 £62.99

Save £10.79 £8.99 (12%)

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CURA Heat Pump Ethylene Glycol - 20 Litres

CURA Heat Pump Ethylene Glycol - 20 Litres Part Number: 26605

Was £99.12 £82.60 Now £89.99 £74.99

Save £9.13 £7.61 (9%)

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System Fluid

Helping you find the heat transfer system fluid you need

All the air source systems products you need

Why choose BES

Need help finding heat transfer fluid for your air source heating system?

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System Fluid

Helping you find the heat transfer system fluid you need

All the air source systems products you need

Why choose BES

Need help finding heat transfer fluid for your air source heating system?

Hello there

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