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  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW-0
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW-0
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW-0
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW
  • Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW-0

Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW

Reference: WFUS90HE
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The Warmflow U-SERIES Utility Condensing System Oil Boiler 21-26kW has been specifically designed to fit into the most common kitchen and utility room applications. Supplied as a pre-pumped boiler with a system kit, the Warmflow U-SERIES Utility Condensing System Oil Boiler 21-26kW includes a 12 litre expansion vessel that can hold a total system volume of 145 litres.

A stylish, high-gloss white casing, proven Riello burner technology, and a 7 year heat exchanger warranty are just some of the incredible features of this boiler.

Why Buy A Warmflow Boiler?


  • 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
Please note: This is not a combination Boiler. Please call if you need assistance.

Warmflow U-SERIES US90HE Oil Boiler Features:


  • Easily-accessible, highly-efficient heat exchanger
  • Latest in Riello burner technology for complete reliability
  • Extremely quiet in operation
  • Finished in a stylish, high-gloss white casing
  • Designed to fit neatly under standard size work surfaces
  • Supplied for balanced flue applications
  • Suitable for use with Warmflow high efficiency 'easy-fit' flue systems
  • Ideal for use with systems designed to operate with a low return water temperature (underfloor heating, for example)
  • Can provide central heating only or central heating & hot water indirectly
  • Economical running costs thanks to SEDBUK A efficiency rating

Warmflow U-SERIES US90HE Oil Boiler Specifications:


Height 865mm
Width 413mm
Depth 600mm
Central Heating Output (kw) 21 - 26
Central Heating Output (btu) 71,694 - 88,764
Conventional Flue Size (mm) 100mm
Service Access Front/Top
Flow Connection 22mm
Return Connection 1" BSP
Collection U-SERIES
Manufacturer Part Number US90HE

SEDBUK Band A Oil Boiler


Warmflow High Efficiency Complete Flue Sets
Warmflow Flue Component Options
Warmflow Plume Management Kits and Accessories
Warmflow Compatible Programmers
  • Warmflow PU1 White Programmer for Utility Boilers

    Warmflow PU1 White Programmer for Utility Boilers(WFPU1)

    £70.38 (£58.65 exc. VAT)
Protect your Central Heating System with Magnaclean
  • Adey MagnaClean Professional 22 mm Black

    Adey MagnaClean Professional 22 mm Black(608001)

    £116.65 (£97.21 exc. VAT)
Dimensional Diagram - Warmflow U-SERIES Kitchen / Utility Condensing System Oil Boiler 21-26kW
Product Documents
  • Brochure Type: PDF Size: 3.74 MB Uploaded: 23rd May 2017
  • Flue Options Type: PDF Size: 1.44 MB Uploaded: 23rd May 2017

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