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Warmflow Boilers – Prices, Guarantees & Ranges


Warmflow is a Northern Irish manufacturer with over 45 years of expertise in home heating solutions. The company specialises in oil fired boilers including the UK and Ireland’s first AA rated oil combi boiler. Every Warmflow boiler includes a Riello burner to deliver the ultimate in performance, efficiency and quiet operation.

Warmflow Product Range

  • Condensing Oil Boilers (Combi, System & Regular)
  • Hot Water Cylinders
  • Biomass Boilers
  • Ground-source Heat Pumps

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Popular Combi Boilers

A Combi boiler will produce hot water for both your heating and taps and shower directly from the mains supply. This means they don’t require a separate hot water cylinder which is great space saver. Warmflow offer a range of oil fired Combi boilers in a variety of outputs including a model suitable for external installation. This includes the UK’s only AA rated oil Combi boiler.

Utility HEE CombiKabin-Pak HEE Combi
Type of InstallationKitchen / Utility (U-Series)External (K-Series)
Available Outputs (kW)15-21, 21-26, 26-3315-21, 21-26, 26-33
ErP Rating (Heating)AA
Efficiency89.1%89.1-89.5%
ErP Rating (Hot Water)AA
Dimensions (mm)595 x 865 x 600600 x 900 x 700
Flue optionsLeft, right or rear low-level conventional flue, optional top outletLeft, right or rear low-level conventional flue, optional top outlet
Standard Warranty5 years2 years

Popular System Boilers

With the addition of a hot water storage cylinder a System boiler will power both your central heating and hot water. Warmflow manufacture several System boilers including models for kitchen / utility room installation and external versions which can be placed outside the home.

Utility HE SystemKabin-Pak HE System
Type of InstallationKitchen / Utility (U-Series)External (K-Series)
Available Outputs (kW)15-21, 21-26, 26-3315-21, 21-26, 26-33
ErP RatingAA
Efficiency90.7-90.8%90.7-90.8%
Dimensions (mm)413 x 865 x 600413 x 900 x 700
Flue optionsConventional flue, low-level, high-level and vertical balanced flueConventional flue, low-level, high-level and vertical balanced flue
Standard Warranty5 years2 years

Popular Regular Boilers

For traditional heating systems with a feed and expansion tank in the attic and a hot water storage cylinder, Warmflow produce Regular boilers in a range of sizes. They produce boilers which are suitable for kitchen/utility, external or boilerhouse/garage installations. Compare the efficiency of Warmflow boilers here.

Utility HE RegularKabin-Pak HE RegularBoilerhouse Regular
Type of InstallationKitchen / Utility (U-Series)External (K-Series)Boilerhouse / Garage (B-Series)
Available Outputs (kW)15-21, 21-26, 26-33, 33-4415-21, 21-26, 26-33, 33-4415-21, 21-26, 26-33
ErP Rating AAA
Efficiency90.3-90.8%90.3-90.8%90.7-90.8%
Dimensions (mm)413 x 865 x 600413 x 900 x 700395 x 685 x 600
Flue optionsConventional flue, low-level, high-level and vertical balanced flueConventional flue, low-level, high-level and vertical balanced flueConventional flue, low-level, high-level and vertical balanced flue
Standard Warranty7 years7 years7 years

Popular Discontinued Boilers

Below you can find more information about some of Warmflow’s most popular discontinued models (ideal if you want to compare your current boiler to their new offerings).

Warmflow 70/90 Bluebird OilWarmflow Combi 70/90 Combi Oil
Warmflow 90/120 Bluebird OilWarmflow 120/150 Bluebird Oil
Warmflow Bluebird 70/90 BB OilWarmflow Combi 70/90 Kabin Pak Oil
Warmflow Boilerhouse B1 OilWarmflow Whitebird 70/90 WB Oil
Warmflow Bluebird 90/120 BB OilWarmflow Whitebird 90/120 WB Oil
Warmflow Wall Mounted 50/70 Internal OilWarmflow Utility U90HE Oil
Warmflow Kabin Pak K90 OilWarmflow Kabin Pak 90/120 KP Oil
Warmflow Boilerhouse B90HE OilWarmflow Kabin Pak KP90HE Oil
Warmflow Utility U90 OilWarmflow Kabin Pak KC90HE Oil
Warmflow Boilerhouse B120HE OilWarmflow Utility U120HE Oil
Warmflow Utility UC90 OilWarmflow Boilerhouse B70HE Oil
Warmflow Whitebird 50/70 WB OilWarmflow Utility UP90HE Oil
Warmflow Utility UC90HE OilWarmflow Kabin Pak K70HE Oil
Warmflow Bluebird 150/200BB OilWarmflow Kabin Pak K90HE Oil
Warmflow Whitebird 120/150 WB OilWarmflow Kabin Pak KP90 Oil

Warmflow Prices

An oil boiler from Warmflow is likely to cost in the region of £1,200 – £2,000 excluding installation. Of course, this price will vary depending on which boiler you need, the supplier you choose to buy from and the complexity of the installation.

The only way to get accurate prices for a new Warmflow boiler is to source and compare quotes from at least 2 different companies. This enables you not only to compare prices but also to weigh up the experience and reputation of the installer.

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Warmflow Guarantee

A typical warranty from Warmflow is 2-7 years but this will depend which model of boiler you choose. The heat exchanger is covered by a 7 year warranty across their range. All boilers need to be registered via the Warmflow website to benefit from the free warranty.

Why Choose Warmflow?

Warmflow are one of the UK’s leading manufacturers of oil fired boilers offering the UK’s only oil Combi boiler which is AA rated for energy efficiency. They produce a range of outputs suitable for internal, external and boilerhouse installation so you should have no trouble finding a boiler for your needs. In addition, the warranties on offer are comparable with most other manufacturers on the market.

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