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Warmflow U-SERIES 90 High Efficiency Pre-Pumped Oil Boiler 21-26kW

In stock
  • Estimated Delivery
  • FREE

5 to 8 Working DaysOrders placed before 1pm are processed the same day, delivery times are between 8am & 6pm Monday to Friday, all deliveries require a signature, for delivery instructions please use the notes section during checkout. Please see below for Items you will also require for this product.

Was £2,963.13 Special Price £1,549.39 (inc VAT)

✝ Subject to stock availability. UK Mainland only. Delivery fees and times to Northern Ireland, Scottish Highlands & Isles, Isle of Man, Isle of Wight, Isles of Scilly, and the Channel Isles may vary. Deliveries are made during working days only.

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5 year GuaranteeNote: For your first boiler purchase with Trade Plumbing, the item must be sent to the registered billing address. If you need the boiler to be sent to a different address please enquire on 0844 504 4499.

The HE utility range has been specifically designed to fit into most kitchen and utility room applications. It’s stylish white casing houses a highly efficient heat exchanger that can be easily accessed for servicing without the need for removable work surfaces. The latest in Riello burner technology makes the utility range quiet in operation and the perfect choice in oil-fired boilers.


  • Front Servicing
  • Easy-to-use controls
  • Flue System
  • Heat Exchenger
  • Low return water temmpreture
  • Easily-accessible, highly-efficient heat exchanger
  • Suitable for use with conventional flues or with the multi-optional HE ‘Easy-Fit’ Balanced Flue System


  • Height: 865mm
  • Width: 413mm
  • Depth: 600mm
  • CH Heating Output (kW) : 21-26
  • Sedbuk rating : A
  • Conventional flue size: 100mm 
  • Service access : Front
  • Guarantee: 5 years

Unique features and benefits:

HE boilers are suitable for use on most types of fully pumped heating and hot water systems and are ideal for systems that have been designed to operate with a low return water temperature i.e. under floor heating.

An environmental investment:

Designed to be environmentally friendly, Warmflow HE boilers are highly efficient in operation and are SEDBUK ‘A’ rated. Combining economical running cost operation with comprehensive 5 year heat exchanger warranty makes Warmflow the perfect choice for oil-fired heating.

Factory-fitted with a low pressure switch as standard, the boiler is protected from damage in the event of water loss from the system. An integrated thermostatic mixing valve ensures a controlled output, as well as temperature adjustment.

The Utility Standard Boilers (UHE) are supplied with a pre-wired, factory-fitted burner and thermostat. Only one IE320 mains socket (supplied) needs to be wired on site. The multi-optional flue system can be routed through the top, back, left or right hand side of the casing.

About WarmFlow:

Warmflow are a British company, with the largest market share of oil boilers in the UK

  • Fitted with a Riello burner - the world leader in burner technology
  • Full back-up service covering the whole of England, Scotland, and Wales
  • The most versatile flue system on the market - plastic flue system with inbuilt temperature control for total safety
  • Each boiler is produced in a brand new £2.5 million pound fully robotic manufacturing plant, ensuring 100% reliability and customer satisfaction

At Warmflow they are constantly looking into new areas of expertise and strive to deliver value and quality. All of their products are independently tested and accredited and comply with all Building Regulations. In addition, to ensure that they maintain their own in house quality standards, they have in place a BSI approved monitoring system certified to ISO 9001.

As a company specialising in heating products they are able to offer an extensive range of options from oil fired boilers to solar tubes and panels. Recent acquisitions at Warmflow include CNC high definition plasma cutting, robotic welding and panel folding technology. This technology utilizes the latest CAD, CAM and sheet metal software on an integrated computer network, allowing production capacity to be increased whilst simultaneously raising quality.

Technical Information
More Information
Brand Warmflow
Manufacturer ID UP90HE
Guarantee Length 5 Years
Boiler Height 865mm
Boiler Width 413mm
Boiler Watts Output 21- 26kW

Here at TradePlumbing.co.uk we have voluntarily extended our returns period to 90 days, as we understand that sometimes there may be the odd item left over from a project or you may have an unexpected delay to a project meaning that you need the added peace of mind when ordering products in case a return is necessary.

We truly believe in being able to offer customers a flexible service and this extended period allows us to go that little extra to help you when in need, as long as goods are returned in the same condition as received we are happy to help.

To return any time initially please email your request to our Customer Support team at customerservice@tradeplumbing.co.uk along with your TP - Order Reference, please allow at least 1 working day for response and we will take it from there.

To View our complete Return Policy Click on Return and Refunds

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