Head to head
Joule Cyclone Air 150L Direct vs Vaillant ecoTEC Pro 24kW combi
The Vaillant ecoTEC Pro 24kW combi comes with 1 year more warranty.
Last reviewed 13 September 2026
Key differences
- Warranty: the Vaillant ecoTEC Pro 24kW combi comes with 1 year more warranty.
Specifications side by side
| Joule Cyclone Air 150L Direct | Vaillant ecoTEC Pro 24kW combi | |
|---|---|---|
| Dimensions | 1196 x 540 x 540 mm (H x W x D) | 720 x 440 x 338 mm |
| Warranty | 1 year manufacturer's warranty | 2 years standard, 7 years with Vaillant Advance registration |
| Capacity | 150 litres | - |
| Heat-up time | 57 minutes (full tank, 6kW immersion) | - |
| Immersion heater | 6kW (2 x 3kW) | - |
| Hot water output | - | 23.4 kW |
| Central heating output | - | 24.8 kW |
| ErP class | - | A |
| Seasonal efficiency | - | 93% |
| Weight | - | 38 kg |
| Hot water flow rate | - | 9.6 litres per minute |
Sources: Joule Cyclone Air 150L Direct, Vaillant ecoTEC Pro 24kW combi. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the ecoTEC Pro 24kW combi if...
- you want one that comes with 1 year more warranty
A gas combi boiler with 23.4 kW of hot water output, sized for a flat or small house with one bathroom. It delivers about 9.6 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 2 years standard, 7 years with Vaillant Advance registration. Seasonal efficiency is 93%.
Full ecoTEC Pro 24kW combi specifications →Common questions
What is the difference between the Joule Cyclone Air 150L Direct and the Vaillant ecoTEC Pro 24kW combi?
The Vaillant ecoTEC Pro 24kW combi comes with 1 year more warranty. The Joule Cyclone Air 150L Direct is a direct unvented hot water cylinder, 150 litres; the Vaillant ecoTEC Pro 24kW combi is a gas combi boiler, 23.4 kW hot water output.
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