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Heatrae Sadia Multipoint 50 vs Vaillant aroTHERM plus 5kW

The Heatrae Sadia Multipoint 50 is a electric unvented water heater, 50 litres. The Vaillant aroTHERM plus 5kW is a r290 monobloc air source heat pump, 5 kw heat output.

Last reviewed 13 September 2026

Specifications side by side

Heatrae Sadia Multipoint 50Vaillant aroTHERM plus 5kW
Dimensions1007 x 997 x 350 (V) / 371 x 371 x 350 (H) mm965 x 1100 x 450 mm (H x W x D)
Capacity50 litres-
Power3 kW, 230V-
Heat-up timeapprox. 58 minutes-
Recovery timeapprox. 41 minutes-
Max operating pressure10 bar-
Warranty2 years full warranty, 10 years on the inner cylinder-
Heat output-5 kW
SCOP-up to 5.03
Refrigerant-R290 (propane), low GWP
Sound power-53 dB(A) at A7/W35, 58 dB(A) at A7/W55
Weight-128 kg (operating)
Max flow temperature-75C

Sources: Heatrae Sadia Multipoint 50, Vaillant aroTHERM plus 5kW. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the Multipoint 50 if...

A 50 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 50 specifications →

Buy or hire the aroTHERM plus 5kW if...

The smallest aroTHERM plus, sized for a well-insulated flat or small house. It uses the natural refrigerant R290 rather than an F-gas, and reaches a 75C flow temperature, which helps it work with existing radiators on a retrofit job.

Full aroTHERM plus 5kW specifications →

Common questions

What is the difference between the Heatrae Sadia Multipoint 50 and the Vaillant aroTHERM plus 5kW?

The Heatrae Sadia Multipoint 50 is a electric unvented water heater, 50 litres; the Vaillant aroTHERM plus 5kW is a r290 monobloc air source heat pump, 5 kW heat output.

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