Head to head
Joule Cyclone 200L Indirect vs Vaillant ecoTEC Pro 24kW combi
The Joule Cyclone 200L Indirect is a indirect unvented hot water cylinder, 200 litres. The Vaillant ecoTEC Pro 24kW combi is a gas combi boiler, 23.4 kw hot water output.
Last reviewed 13 September 2026
Specifications side by side
| Joule Cyclone 200L Indirect | Vaillant ecoTEC Pro 24kW combi | |
|---|---|---|
| Dimensions | 1490 mm high x 540 mm diameter | 720 x 440 x 338 mm |
| Weight | 47 kg | 38 kg |
| Capacity | 200 litres | - |
| Material | Duplex stainless steel | - |
| ErP rating | C | - |
| Hot water output | - | 23.4 kW |
| Central heating output | - | 24.8 kW |
| ErP class | - | A |
| Seasonal efficiency | - | 93% |
| Warranty | - | 2 years standard, 7 years with Vaillant Advance registration |
| Hot water flow rate | - | 9.6 litres per minute |
Sources: Joule Cyclone 200L Indirect, 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 200L Indirect if...
A 200 litre indirect cylinder from Joule's Cyclone range, built in duplex stainless steel with a high recovery coil for use with a boiler or heat pump. It suits a three or four-bed house with a standard hot water demand.
Full Cyclone 200L Indirect specifications →Buy or hire the ecoTEC Pro 24kW combi if...
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 200L Indirect and the Vaillant ecoTEC Pro 24kW combi?
The Joule Cyclone 200L Indirect is a indirect unvented hot water cylinder, 200 litres; the Vaillant ecoTEC Pro 24kW combi is a gas combi boiler, 23.4 kW hot water output.
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