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  3. Warmflow
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  5. 10139801
Warmflow Agentis External Pro 21kW Combi Oil Boiler
Stock Code: 10139801
Manufacturers Stock Code: E21CPRO

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Technical Information

  • Warmflow Professional is a market leading range of unique, high efficiency oil boilers which use the latest Riello Low NOx technology combined with innovative factory fitted accessories which save both installation time and money
  • Warmflow Professional includes - Teddington fire valve, Oil Line installation kit with oil filter, Adey Magnaclean Pro 2 Filter, Pre wired Grundfos UPM3 Flex circulating Pump, 2 bottles of inhibitor and option to extend to 10 year warranty (T&C's apply).
  • Warmflow's unique, patented 5mm stainless steel heat exchanger technology
  • Factory fitted Grundfos UPM3 FLEX AS circulating pump
  • Factory fitted 24ltr hinged expansion vessel, 32 plate heat exchanger
  • Factory fitted pressure reducing & relief valves as standard
  • No maintenance, IP45 rated anthracite grey casing
  • Multi directional flue included as standard
  • Quiet operation
  • HVO Ready
Manufacturer Stock CodeE21CPRO
EAN Code5055888501915
Sub-CategoryDomestic Boiler
BrandWarmflow
Warranty5 Years
Boiler ModelAgentis External Professional
Output21 kW
CategoryCombi
Fuel TypeOil
Includes Magnetic FilterYes
Last Updated02.06.2026
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