Head to head
Baxi 600 Combi 2 24kW vs Joule Cyclone Air 150L Direct
The Baxi 600 Combi 2 24kW comes with 6 years more warranty.
Last reviewed 13 September 2026
Key differences
- Warranty: the Baxi 600 Combi 2 24kW comes with 6 years more warranty.
Specifications side by side
| Baxi 600 Combi 2 24kW | Joule Cyclone Air 150L Direct | |
|---|---|---|
| Dimensions | 700 x 395 x 297 mm | 1196 x 540 x 540 mm (H x W x D) |
| Warranty | 7 years | 1 year manufacturer's warranty |
| Hot water output | 25.8 kW | - |
| Central heating output | 21.2 kW | - |
| ErP class | A | - |
| Seasonal efficiency | 93% | - |
| Weight | 29.5 kg | - |
| Hot water flow rate | 10.2 litres per minute | - |
| Capacity | - | 150 litres |
| Heat-up time | - | 57 minutes (full tank, 6kW immersion) |
| Immersion heater | - | 6kW (2 x 3kW) |
Sources: Baxi 600 Combi 2 24kW, Joule Cyclone Air 150L Direct. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 600 Combi 2 24kW if...
- you want one that comes with 6 years more warranty
A gas combi boiler with 25.8 kW of hot water output, sized for a flat or small house with one bathroom. It delivers about 10.2 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 7 years. Seasonal efficiency is 93%.
Full 600 Combi 2 24kW specifications →Buy or hire the Cyclone Air 150L Direct if...
A 150 litre direct unvented cylinder from Joule's Cyclone range, heated by twin immersion elements rather than a boiler or heat pump coil. It suits a property with electric-only heating or a holiday let, reheating a full tank in around 57 minutes.
Full Cyclone Air 150L Direct specifications →Common questions
What is the difference between the Baxi 600 Combi 2 24kW and the Joule Cyclone Air 150L Direct?
The Baxi 600 Combi 2 24kW comes with 6 years more warranty. The Baxi 600 Combi 2 24kW is a gas combi boiler, 25.8 kW hot water output; the Joule Cyclone Air 150L Direct is a direct unvented hot water cylinder, 150 litres.
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