This heat-only boiler provides oil-fired central heating for commercial and industrial installations. It is a wall-mounted unit designed to supply a dedicated heating circuit with a rated thermal output of 21 kW and is intended for use where a standalone heat source is required rather than combined hot-water generation.

Grant Vortex Eco Internal Wall Hung 16/21 21 kW Oil Heat Only Boiler VTXWH16/21 ERP

This heat-only boiler supplies central heating using oil as the fuel and is intended for floor-mounted installation in domestic and light-commercial settings. It is a compact, white unit constructed in stainless steel, designed to integrate with typical hydronic heating systems where a dedicated boiler provides primary heat to radiators and a separate hot-water cylinder.

Warmflow Agentis Professional Internal 33 kW Oil Heat Only Boiler I33PRO

This combi boiler provides oil-fired central heating and hot water generation for domestic and light commercial settings. It is a floor-mounted unit from the Agentis Internal range, designed to deliver continuous hot water at a practical service flow while operating as a single-package heating source.

Warmflow Agentis Internal 21 kW Oil Combi Boiler I21C

This system boiler provides central heating and hot water operation for oil‑fuelled installations and is intended for wall‑mounted installation with compatible flue arrangements. It is designed for use with Grant EZ‑Fit low‑level, high‑level and vertical flue systems and suits technical environments where compact, efficient heat generation is required.

Grant Vortex Eco Internal Wall Hung 21 kW Oil System Boiler VTXSWH16/21 ERP

This combi boiler provides combined space heating and domestic hot water from an oil-fired unit designed for floor installation in internal plant rooms. Intended for technical environments, it delivers continuous hot-water supply and central-heating operation while occupying a compact footprint for plantroom integration.

Warmflow Agentis Internal 26 kW Oil Combi Boiler I26C

This system boiler is a floor‑mounted oil‑fired unit designed to supply central heating and hot water within domestic or light‑commercial installations. It delivers mid‑range heat outputs suitable for standard property requirements and is intended for installation where a compact, engine‑room style unit is acceptable.

Warmflow Agentis Professional Internal 26 kW Oil System Boiler I26SPRO

This system boiler provides central heating and hot water generation powered by liquid fuel for commercial and industrial settings. Designed as a floor‑mounted unit, it delivers mid‑range thermal capacity and is intended for installations where a compact footprint and efficient oil combustion are required.

Warmflow Agentis Internal 21 kW Oil System Boiler I21S

This combi boiler provides oil-fired heating and domestic hot water generation for commercial and industrial settings. It is a floor-mounted unit designed for installation where robust, continuous thermal output and a compact plantroom footprint are required. The unit delivers sustained heat output and efficient operation suitable for integration with building services and process heating systems.

Warmflow Agentis Pro Internal 21 kW Oil Combi Boiler I21CPRO

This heat-only boiler is an oil-fired central heating unit designed for installation within plant rooms and utility areas where a dedicated heating circuit is required. It delivers controlled thermal output for system-only configurations and is intended for floor-mounted installations in commercial or industrial buildings.

Warmflow Agentis Internal i33 33 kW Oil Heat Only Boiler I33

This heat-only boiler provides oil-fired central heating for domestic and light-commercial plantrooms, configured for internal installation within the Agentis Internal range. It operates as a floor-mounted unit delivering a steady heating output suitable for radiator circuits and indirect hot-water systems, and is finished in a white cabinet to blend into utility spaces.

Warmflow Agentis Internal I21 21 kW Oil Heat Only Boiler I21

Supplied with a range of valuable add-ons, including the Adey MagnaClean Pro 2 for a cleaner, safer system, the Warmflow Agentis Pro I21PPRO professional internal regular boiler is a cost-effective choice for heating a home. Fast and easy to fit, this stylish 21kW boiler is designed for installation in a kitchen or utility room and with a highly efficient heat exchanger and low-NOx burner technology built-in it maintains an ErP A rating for lower fuel bills and less waste.

Warmflow Agentis Professional I21PPRO internal pumped heat only oil boiler 21kW

Slimline and stylish, the Warmflow Agentis I26S internal system boiler offers a seamless finish in contemporary kitchen and utility room designs. Fitted with powerful components, including a patented heat exchanger, Riello low-NOx burner and reliable Grundfos pump, the Agentis internal range includes the only AA-rated oil boiler currently on the market, averaging a saving of 5L of fuel a week for lower fuel bills and reduced emissions.

Warmflow Agentis I26S internal system oil boiler 26kW

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Internal Oil Boiler