Head to head
Heatrae Sadia Multipoint 100 vs Viessmann Vitodens 100-W 30kW combi
The Viessmann Vitodens 100-W 30kW combi comes with 3 years more warranty.
Last reviewed 13 September 2026
Key differences
- Warranty: the Viessmann Vitodens 100-W 30kW combi comes with 3 years more warranty.
Specifications side by side
| Heatrae Sadia Multipoint 100 | Viessmann Vitodens 100-W 30kW combi | |
|---|---|---|
| Dimensions | 1234 x 1207 x 454 (V) / 454 x 454 x 454 (H) mm | 700 x 400 x 360 mm |
| Warranty | 2 years full warranty, 10 years on the inner cylinder | 5 years |
| Capacity | 100 litres | - |
| Power | 3 kW, 230V | - |
| Heat-up time | approx. 112 minutes | - |
| Recovery time | approx. 79 minutes | - |
| Max operating pressure | 10 bar | - |
| Hot water output | - | 31.7 kW |
| Central heating output | - | 25 kW |
| ErP class | - | A |
| Seasonal efficiency | - | 98% |
| Weight | - | 35-38 kg |
| Hot water flow rate | - | 15.6 litres per minute |
Sources: Heatrae Sadia Multipoint 100, Viessmann Vitodens 100-W 30kW combi. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Multipoint 100 if...
A 100 litre electric unvented water heater from Heatrae Sadia's Multipoint range, for a property with no boiler-fed hot water such as an outbuilding or small flat. It runs from a 3kW element and carries a 10 year warranty on the inner cylinder.
Full Multipoint 100 specifications →Buy or hire the Vitodens 100-W 30kW combi if...
- you want one that comes with 3 years more warranty
A gas combi boiler with 31.7 kW of hot water output, sized for a three-bed house with one or two bathrooms. It delivers about 15.6 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 5 years. Seasonal efficiency is 98%.
Full Vitodens 100-W 30kW combi specifications →Common questions
What is the difference between the Heatrae Sadia Multipoint 100 and the Viessmann Vitodens 100-W 30kW combi?
The Viessmann Vitodens 100-W 30kW combi comes with 3 years more warranty. The Heatrae Sadia Multipoint 100 is a electric unvented water heater, 100 litres; the Viessmann Vitodens 100-W 30kW combi is a gas combi boiler, 31.7 kW hot water output.
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