Primaflow F&P

Catalogue

Boilers

Combi Baxi Grant Viessmann

System Bosch Heatrae Sadia Warmflow

Heat Only EHS Ideal Heating Worcester Bosch

Electric Glowworm Vaillant ALL BOILERS

Flues and Accessories

Flues Glowworm Keston Worcester Bosch

Accessories Grant Vaillant ALL FLUES AND ACC

Bosch Heatrae Viessmann

Baxi Ideal Heating Warmflow

Heating

Heating Controls Smart Home Thermostats ALL HEATING

Cylinders Water Heaters Valves & Fittings

Pumps Water Treatment Safety Devices

Radiator Valves and TRVs Motorised Valves Spares & Accessories

Radiators

Compact Electric Prorad Type 11

Decorative Fan Convectors Stelrad Type 22

Column Radiators Henrad Atlantic ALL RADIATORS

Metal Plumbing

Black & Galvanised Malleable iron Clips and Fixings Endfeed Press Fit

Brass Fittings & Accessories Compression Gas Fittings & Accessories Solder Ring

Brassware Copper tube Oil line components ALL METAL FITTINGS

Plastic Plumbing

Pipe Rainwater Fittings JG Speedfit Plasson

Fittings Wastes and Traps Hep20 Polypipe

MDPE Fittings McAlpine FloPlast ALL PLASTIC PLUMBING

Packaged Products

Bathroom Accessories WC and Cistern Parts Merchandise Ventilation

Metal Plumbing Radiator Valves Rainwater ALL PACKAGED PLUMBING

Wastes Clips, Sundries and Tools Plastic Plumbing

Bathroom & Kitchen

Bathroom Shower Enclosures Showers Wastes, Traps and Connectors

Kitchen Furniture Shower Trays Grohe

Baths Macerators Taps Mira

Bath Panels and Screens Sanitaryware Towel Rails and Decorative Heating Roca

Fires

Electric Fires Crystal Be Modern Aurora

Gas Fires Dimplex Broseley All Fires and Stoves

Stoves Flavel AGA

Suites and Surrounds Valor Adam

Essentials

Tools Electrical Fittings Talon Rothenberger

Sealants & Additives Cable and Clips Fernox Everbuild

Insulation Sockets and Switches Primaflow Manrose

Clips and fixings Ventilation Arctic Hayes ALL PLUMBING ESSENTIALS

Renewables

Cylinders Air Conditioning Vaillant Worcester Bosch

Heat Pumps Water Treatment Grant Renewables Product Selector

Heat Recovery Baxi Viessmann ALL RENEWABLES

Clearance

Boilers Cylinders Adey View All

Press Fit Black Malleable Iron Pipe

Showers Brassware Towel Warmers

Warmflow Agentis External 21kW System Oil Boiler

Stock Code: 10138201
Manufacturers Stock Code: E21S

More Information

Please log in to see our current stock levels and your pricing.

Login to Your Account

If you are an existing customer and need a website login please request one here.

If you are a new customer please apply for an account.

Customers also bought...

Stock Code: 10450701

Baxi 430 Combi 2.1 Boiler

Please log in to see our current stock levels and your pricing.

Product Information

Login to Your Account

Stock Code: 11237001

Ideal Exclusive2 24kW Combi Boiler Only

Please log in to see our current stock levels and your pricing.

Product Information

Login to Your Account

Stock Code: 11237101

Ideal Exclusive2 30kW Combi Boiler Only

Please log in to see our current stock levels and your pricing.

Product Information

Login to Your Account

Stock Code: 105531

Vaillant ecoTEC Sustain 28kW Boiler Only

Please log in to see our current stock levels and your pricing.

Product Information

Login to Your Account

Technical Information

Warmflow's unique, patented 5mm stainless steel heat exchanger technology
Latest Riello low NOx burner
Factory fitted Grundfos UPM3 FLEX AS circulating pump
Factory fitted sealed system including 12ltr rectangular expansion vessel for more space within the appliance
No maintenance, IP45 rated anthracite grey casing
Multi directional flue included as standard
Quiet operation
HVO Ready

Manufacturer Stock Code	E21S
EAN Code	5055888501786
Sub-Category	Domestic Boiler
Brand	Warmflow
Warranty	5 Years
Boiler Model	Agentis External
Output	21 kW
Category	System
Fuel Type	Oil
Includes Magnetic Filter	No
Last Updated	02.06.2026

@@@MANUFACTURERGUARANTEETERMS@@@

This site uses cookies to personalise content and services and to provide social media features.

Some of the cookies are essential to make the site work and some help us analyse how the site is used. We also share information about your use of our site with social media and advertising partners. By using this site you agree to our use of cookies.


Agree To All

Cookie Type	Toggle

Essential
These cookies are essential in order to enable you to move around the website and use its features, such as accessing secure areas of the website. Without these cookies services you have asked for, like shopping baskets or e-billing, cannot be provided. I agree to the use of essential cookies PrivacySettings - Records your selections in this window FP - Used to hold information when you submit details on website forms ASPSESSIONID - Used to allow the site to be browsed

Non-Essential
I agree to the use of non-essential cookies There are no non-essential cookies currently in use

Third Party
I agree to the use of third party cookies _ga, _gat, _gid - used by Google Analytics