Fernox HP-15c Concentrated Heat Transfer Fluid - 20 Litres
FREE UK Delivery

£130.52 ex VAT£156.62 inc VAT

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FREE UK Delivery

Product features

  • High-performance heat transfer fluid
  • Non-toxic concentrated formula
  • Efficient thermal conductivity
  • Suitable for heat pumps
  • Frost protection to -34°C
  • Corrosion & limescale protection
  • Inhibits bacterial growth
  • Prevents freezing damage
Product code: 62546
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Description

Fernox HP-15c Heat Transfer Fluid is a high-performance, non-toxic, concentrated fluid specifically engineered to transfer heat efficiently, prevent freezing, and protect internal components in air and ground source heat pumps. Developed to optimise performance and longevity in your heat pump systems, this advanced heat transfer fluid ensures efficient thermal conductivity while delivering reliable system protection in even the coldest temperatures.

This effective heat transfer fluid also offers outstanding defence against common issues that can compromise the efficiency and lifespan of heat pump systems, such as corrosion, limescale build-up and bacterial growth. Its pH-stable composition helps maintain consistent system conditions over time, reducing maintenance requirements and supporting long-term operational efficiency.

This concentrated fluid must be diluted with mains water prior to use, allowing installers to tailor the level of frost protection according to system requirements. When diluted between 33% and 50%, it provides dependable freeze protection ranging from -14°C down to -34°C, making it suitable for a wide range of climates and installation environments. Its compatibility with all commonly used materials in heat pump systems ensures easy integration without risk of damage or degradation.

For best results, existing systems should be thoroughly cleaned using a suitable Fernox cleaner to remove sludge and limescale before introducing HP-15c. Frost protection levels can be accurately measured using a Fernox refractometer, ensuring precise system performance.

  • Concentrated heat transfer fluid for air & ground source heat pumps
  • Compatible with all common heat pump system materials
  • Suitable for both domestic & commercial applications
  • Provides adjustable frost protection from -14°C to -34°C
  • Protects against corrosion, limescale & bacterial growth
  • High-performance non-toxic formulation for safe use
  • pH stable for long-term system reliability
  • Flexible dilution range: 33% to 50% concentration
  • Easy monitoring with a Fernox refractometer
  • Supplied in a 20-litre drum

Code: 62546

DELIVERY INFORMATION

Fast, reliable UK delivery

  • FREE UK delivery (2–3 working days) on orders over £99 exVAT (order before 4pm)*.
  • Orders under £99 exVAT are charged £6 inc VAT (£5 exVAT).
  • Need it quickly? Choose from our Next Working Day & Saturday delivery options below (order before 2pm).

Delivery options & rates

Delivery OptionDelivery TimeCost
Standard Delivery2-3 working days£6.00 (£5.00 exVAT)
FREE Standard Delivery (orders over £99 exVAT)*2-3 working daysFREE
Next Working Day Delivery (order before 2pm)Next working day£9.99 (£8.33 exVAT)*
Next Working Day by 12pm  (order before 2pm)Next working day£20.00 (£16.67 exVAT)
Next Working Day by 10:30am  (order before 2pm)Next working day£21.60 (£18.00 exVAT)
Saturday Delivery  (order before 2pm Friday)    Next working day£20.00 (£16.67 exVAT)
Northern Ireland, Highland  & Islands Delivery  3-5 working days£9.99 (£8.33 exVAT)

Important: Orders placed after 2pm on Friday (or over the weekend) are processed on Monday for next working day delivery. Next Day & Saturday Delivery options NOT available on all products.

*FREE Standard & Next day delivery available on select products and will be clearly shown on the product page.


What to expect

  • We dispatch Monday - Friday (excluding public holidays).
  • Once dispatched, you’ll receive tracking information (where available).
  • If delivery is delayed for any reason, we’ll contact you as soon as possible with an updated estimate.

Please note: we cannot be held responsible for missed deliveries. Customers are advised to check their spam or junk folder to ensure tracking information and estimated delivery details are received.


Specialist product delivery

Some products require specialist handling:

  • For Portable power please allow up to 4 working days for delivery.
  • Solar panels are shipped via our £100 pallet delivery service.
  • In some cases a third-party supplier may fulfil your order directly.

Delivery areas & restrictions

  • Northern Ireland, Scottish Highlands & Channel Islands: please contact us for shipping rates.
  • Portable power to Northern Ireland: we can’t currently ship these items due to insurance issues with the courier.
  • International delivery: unfortunately we do not currently offer international shipping.

Questions, problems, or returns?

RETURN POLICY

Last updated May 23, 2024

Thank you for your purchase, we hope you are happy with it.

However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund, store credit, or an exchange; please see below for more information on our returns policy.

RETURNS

If you find you have received the wrong or damaged item(s), you need to contact us within 7 days of receipt of goods. Any time after this you are responsible for returning the goods at your own cost following the standard returns process.

All returns must be postmarked and in writing within fourteen (14) days of the purchase date. All returned items must be in a new, unopened and unused condition, with all original tags and labels attached.


RETURN PROCESS

To return an item, please click the ‘Download Returns Form’ below and complete all data fields. You can then email this to our team once completed.
Place your item(s) securely in its original packaging along with the returns form.
Please note that the RMA# on the returns address is your original order number; please ensure to reference this on the returns address, as per below.
You are now ready to mail your return to the following address:

Attn: Returns
RMA #/Order No -
Eco WizardUnderfloor Wizard Ltd t/a ECO Wizard
Beechfield House
Winterton Way
Macclesfield
Cheshire
SK11 0LP
United Kingdom

We ask that all customers when returning products send the goods via a trackable courier service. Underfloor Wizard Ltd t/a ECO Wizard will not be held responsible for goods which do not arrive at our premises.

Please note, you will be responsible for all return shipping charges, unless in the instance of damaged/faulty goods received in which case we can issue you with a returns label to cover the cost of postage.

Download Returns Form

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return or exchange. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your return has been processed.

Faults on installed products: 

If a product that has been installed develops a fault, please contact us, do not uninstall the product yourself. We will arrange for an engineer or technical support from the brand to assist with diagnosing the fault. Once the fault has been confirmed we can then arrange for the necessary next steps to occur.


EXCEPTIONS

The following items cannot be returned or exchanged:

  • opened box, damaged, missing or incomplete items cannot be returned.
  • items that have been installed.


QUESTIONS
If you have any questions concerning our return policy, please contact us at: returns@ecowizard.co.uk

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