Warmflow Agentis Boilerhouse Condensing Oil Boiler 27–33kW
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Warmflow Agentis Boilerhouse Condensing Oil Boiler 27–33kW
(Approx. 3-5 working days)


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The Warmflow Agentis Boilerhouse B33 is a floor standing, condensing oil fired boiler designed for installation in boiler houses or garages. It operates on kerosene and is fully compatible with Hydrotreated Vegetable Oil (HVO) for renewable heating solutions.
This oil boiler delivers a central heating output range of 27–33kW and incorporates a patented stainless steel heat exchanger for improved thermal efficiency. It uses Riello low NOx burner technology to meet emissions requirements and ensure quiet operation. The boiler is supplied fully wired with a factory fitted burner, thermostat, and condensate trap for straightforward installation.
The B33 supports multiple flue configurations, including conventional and balanced options, and features top mounted flow and return connections for ease of plumbing. Its casing is made from powder coated steel with a blue leather grain finish for corrosion resistance and noise reduction. The integrated frost protection function automatically activates the boiler at low temperatures to prevent freezing. It is ErP A-rated for efficiency, NOx Class 3 compliant, and achieves a seasonal efficiency of 93%.
- Output range: 27–33kW for central heating
- Seasonal efficiency of 93% (SAP 2009)
- Powder coated steel casing with leather grain finish
- Built in frost protection prevents freezing
- HVO ready for renewable liquid fuel use
| Brand | Warmflow |
|---|---|
| Width | 395 mm |
| Applicable Standards | SEDBUK Band A, OFTEC Approved |
| Connection Size | 1 " |
| Depth | 600 mm |
| Flue Included | No |
| Fuel Type | Kerosene & HVO |
| Heating Energy Rating | A |
| Heat Output Range | 27kW - 33kW |
| Height | 697 mm |
| Heating Output | 33 kW |
| Min Heat Output | 27 |
| Model Name / No | B33 |
| Weight | 118 kg |
| Colour | Blue |
| Mount Type | Free Standing |
| Residential Warranty | 2 years parts & labour, 5 years heat exchanger |
| Sound Power Level (dB A): | 52 dB |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.
The Warmflow Agentis Boilerhouse B33 is a floor standing, condensing oil fired boiler designed for installation in boiler houses or garages. It operates on kerosene and is fully compatible with Hydrotreated Vegetable Oil (HVO) for renewable heating solutions.
This oil boiler delivers a central heating output range of 27–33kW and incorporates a patented stainless steel heat exchanger for improved thermal efficiency. It uses Riello low NOx burner technology to meet emissions requirements and ensure quiet operation. The boiler is supplied fully wired with a factory fitted burner, thermostat, and condensate trap for straightforward installation.
The B33 supports multiple flue configurations, including conventional and balanced options, and features top mounted flow and return connections for ease of plumbing. Its casing is made from powder coated steel with a blue leather grain finish for corrosion resistance and noise reduction. The integrated frost protection function automatically activates the boiler at low temperatures to prevent freezing. It is ErP A-rated for efficiency, NOx Class 3 compliant, and achieves a seasonal efficiency of 93%.
- Output range: 27–33kW for central heating
- Seasonal efficiency of 93% (SAP 2009)
- Powder coated steel casing with leather grain finish
- Built in frost protection prevents freezing
- HVO ready for renewable liquid fuel use
| Brand | Warmflow |
|---|---|
| Width | 395 mm |
| Applicable Standards | SEDBUK Band A, OFTEC Approved |
| Connection Size | 1 " |
| Depth | 600 mm |
| Flue Included | No |
| Fuel Type | Kerosene & HVO |
| Heating Energy Rating | A |
| Heat Output Range | 27kW - 33kW |
| Height | 697 mm |
| Heating Output | 33 kW |
| Min Heat Output | 27 |
| Model Name / No | B33 |
| Weight | 118 kg |
| Colour | Blue |
| Mount Type | Free Standing |
| Residential Warranty | 2 years parts & labour, 5 years heat exchanger |
| Sound Power Level (dB A): | 52 dB |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.


