Warmflow boilers

About Warmflow Boilers

Established in Northern Ireland in 1970, Warmflow has been manufacturing and supplying award-winning oil-fired boilers to homes across the UK and Ireland since being established.

All of Warmflow’s boilers are manufactured at its production facility in Lisburn, Northern Ireland.

The current Warmflow boiler range comprises internal, external and boiler house oil boilers in heat only, system, pumped, and combi options. 

Across the Warmflow boiler range, technology utilised includes Riello low NOx burners, Grundfos UPM3 FLEX AS circulating pumps, and Warmflow’s patented 5mm stainless steel heat exchangers.

Interested in a Warmflow boiler?

Agentis Internal oil boiler range

Warmflow Agentis Internal Oil Boiler

Fuel type: Oil
Available in: Available as a heat only boiler in 21kW, 27kW, 33kW and 44kW, a pumped boiler in 21kW, 27kW, 33kW and 44kW, a system boiler in 21kW, 27kW and 33kW, and a combi boiler in 21kW, 27kW, and 33kW.
Efficiency: 90%
Warranty: 5 year parts and labour warranty


Agentis External oil boiler range

Warmflow Agentis External Oil Boiler

Fuel type: Oil
Available in: Available as a heat only boiler in 21kW, 27kW, 33kW, and 44kW
Efficiency: 90%
Warranty: Up to 5 year parts and labour warranty


Agentis Boiler House boiler range

Warmflow Agentis Boiler House Oil Boiler

Fuel type: Oil
Available in: 21kW, 27kW, 33kW, 44kW
Efficiency: 91.5%
Warranty: Up to 5 year parts and labour warranty


Interested in a Warmflow boiler?