Warmflow Agentis External Heat Only Pumped Pro Oil Boiler 15–44kW

Warmflow Agentis External Pumped Pro Boiler

The Warmflow Agentis External Heat Only Pumped Pro Oil Boiler is designed for outdoor installation in central-heating systems that require an oil-fired heat source with a factory-fitted circulating pump. The Agentis range combines Warmflow’s heat exchanger technology with a Riello low-NOx burner and a robust external casing.

The external pumped range offers output options from 15kW to 44kW. Professional variants are identified in Warmflow’s technical documentation as E21P PRO, E26P PRO and E33P PRO. Confirm the exact model and configuration when ordering, particularly for the larger E44P model.

Available Models and Heating Outputs

Model availability and Professional specification should be confirmed against the exact boiler being supplied.

Factory-Fitted Grundfos Circulating Pump

The Agentis External Pumped range includes a factory-fitted Grundfos UPM3 FLEX AS circulating pump. Integrating the pump into the boiler helps simplify installation and reduces the need to source and fit a separate circulating pump.

This configuration is intended for heat-only central-heating systems. It should not be confused with an Agentis external combi boiler, which is designed to provide domestic hot water as well.

Designed for External Installation

The boiler is housed in an anthracite-grey external casing designed for outdoor use. Warmflow specifies an IP45-rated casing for the external pumped range, along with a multidirectional flue supplied as standard.

The E21P, E26P and E33P models are approximately 900mm high × 413mm wide × 700mm deep. The larger E44P is approximately 1155mm high × 595mm wide × 876mm deep. Check the installation manual for clearance and flue requirements before installation.

Heat Exchanger and Low-NOx Burner

Warmflow Agentis boilers use the manufacturer’s heat exchanger technology and a Riello low-NOx burner. These components are designed to support efficient oil-fired heating and controlled combustion.

The Agentis range is also marketed as HVO Ready. Fuel suitability, conversion requirements and commissioning must be checked against the manufacturer’s current instructions for the specific model.

Heat-Only Configuration

This is a heat-only boiler, not a combi boiler. It provides heat for a central-heating system; domestic hot water must be arranged separately where required.

The pumped version includes a circulating pump, but it should not automatically be treated as a system boiler. The Agentis System range is a separate configuration with its own integrated sealed-system components.

Key Features

• External oil boiler for central-heating systems
• Output options from 15–44kW across the range
• Professional variants documented for E21P, E26P and E33P
• Factory-fitted Grundfos UPM3 FLEX AS circulating pump
• Riello low-NOx burner technology
• IP45-rated anthracite-grey external casing
• Multidirectional flue supplied as standard
• Front service access
• Quiet operation
• HVO Ready, subject to manufacturer requirements
• Suitable for compatible external heat-only installations
• Available through Euro Fuel Supply, subject to model availability and delivery arrangements

Frequently Asked Questions

What is the Warmflow Agentis External Pumped Pro boiler?

It is an external oil-fired heat-only boiler with a factory-fitted circulating pump. Warmflow’s documentation identifies Professional pumped variants for the E21P, E26P and E33P models.

What output sizes are available?

The broader Agentis External Pumped range covers 15–44kW, with E21P, E26P, E33P and E44P models. Confirm the Professional designation for the exact model before purchase.

Does it include a circulating pump?

Yes. Warmflow lists a factory-fitted Grundfos UPM3 FLEX AS circulating pump for the external pumped range.

Can it be installed outdoors?

Yes. It is designed for external installation and features an IP45-rated anthracite-grey casing. Follow the manufacturer’s installation and clearance requirements.

Is this a combi boiler?

No. It is a heat-only boiler. For integrated domestic hot-water production, investigate the separate Warmflow Agentis External Combi range.

Is it the same as the Agentis External System boiler?

No. The pumped heat-only version and the system version are different configurations. The Agentis External System range includes integrated sealed-system components.

Is the boiler HVO Ready?

Warmflow identifies the Agentis range as HVO Ready. Confirm fuel compatibility and any required adjustments with the current manufacturer documentation before commissioning.

How do I choose the correct output?

The appropriate output depends on the property’s heat demand, insulation, heating-system design and hot-water arrangement. A qualified heating professional should size the boiler for the installation.

Can I order this boiler through Euro Fuel Supply?

Euro Fuel Supply lists heating products for customers seeking supply across Europe. Confirm the exact model, availability, fuel configuration and delivery destination before placing an order.