Warmflow Agentis 21-27kW External Regular Oil Boiler - E26

£2243.94 (Inc. VAT)

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Specifications

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Technical

Warmflow Agentis 21-27kW External Regular Oil Boiler - E26 – Technical Specifications
Fitting Location	External
Weight	128 Kg
EAN	5055888501625
MPN	E26
Product Code	PN177976
Boiler/Product Type	Heat Only (Regular) Boiler
Sub Type	Oil Heat Only
Colour	Grey
Guarantee (Years)	2
Width (mm)	413
Height (mm)	900
Depth (mm)	700
Heat Output	27 kW
Fuel Type	Oil
Mounting	Floor
ErP Rating	ErP A

Description

Key Features

Output: 21–27kW
Flue options: L,R or rear. Optional Top
IP45 rating
ErP rating: A
Dimensions: 900(H) x 700(D) x 413(W) mm
Flow connection: 28mm
Return connection: 1" BSP
Service access: Front
Warranty: 2 years
Riello low NOx technology
Grey, weatherproof casing
Riello low NOx technology
Patented 5mm stainless steel heat exchanger

Warmflow Agentis 21-27kW External Regular Oil Boiler - E26 Overview

The Warmflow Agentis 21-27kW External Regular Oil Boiler - E26 features an IP45 rating with a grey, waterproof casing to suit its external use.

This heat only oil boiler doesn't require any maintenance and includes a patented 5mm stainless steel heat exchanger and Riello low NOx technology for quiet, efficient operation.

Specifications

This external oil boiler features an output between 21 and 27kW, a 28mm flow connection, a 1" BSP return connection and front service action for versatile use.

Downloadable Documents

Warmflow Agentis 21-27kW External Regular Oil Boiler - E26 Spec Sheet (8.85MB)

Warmflow Agentis 21-27kW External Regular Oil Boiler - E26

Name: Warmflow Agentis 21-27kW External Regular Oil Boiler - E26
Brand: Warmflow
SKU: PN177976
Price: 2243.94 GBP
Availability: InStock

Product Code: PN177976

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Prices last checked on 22/07/2026 using Google Product ID Match
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1 Product Question

G diggines asked

How to bleed the boiler after it has run out of oil?

To bleed your Warmflow Agentis after running out of oil:

Turn off the boiler and restore the oil supply.
Loosen the oil pump bleed screw and pump until a steady, bubble-free stream of oil flows; then tighten.
Bleed radiators from lowest to highest until water flows smoothly.
Restart the boiler and check for leaks and proper operation.

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