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Stiebel Eltron WWK 302 vs Sanden Eco Plus 315L

Side-by-side comparison of the Stiebel Eltron WWK 302 and Sanden Eco Plus 315L heat pump hot water systems for Australian homes.

Stiebel Eltron

WWK 302

$4,000

302L · COP 3.94

Sanden

Eco Plus 315L

$6,200

315L · COP 5

Quick verdict

The Stiebel Eltron WWK 302 is $2,200 cheaper at $4,000 vs $6,200. The Sanden Eco Plus 315L has a larger tank (315L vs 302L). The Sanden Eco Plus 315L is more efficient with a COP of 5 vs 3.94. The Sanden Eco Plus 315L is quieter at 38 dB vs 45 dB.

Spec Stiebel Eltron WWK 302 Sanden Eco Plus 315L
Price (supply) $4,000 $6,200
Tank capacity 302L 315L
COP 3.94 5
Refrigerant R134a R744-CO2
Type integrated split
Noise 45 dB 38 dB
Reheat time 4hrs 3.5hrs
Tank warranty 5 years 10 years
Compressor warranty 5 years 6 years
Min operating temp -8°C -25°C
Resistive element Yes No
Rebate eligible Yes Yes

Which should you choose?

Household size

The Sanden Eco Plus 315L has a 315L tank vs 302L for the Stiebel Eltron WWK 302. The larger tank serves bigger households with more daily hot water demand.

Refrigerant

The Stiebel Eltron WWK 302 uses R134a and the Sanden Eco Plus 315L uses R744-CO2.

Efficiency (COP)

The Sanden Eco Plus 315L has a higher COP of 5 vs 3.94 for the Stiebel Eltron WWK 302. The more efficient system saves more on electricity bills over time.

Noise

The Sanden Eco Plus 315L is quieter at 38 dB vs 45 dB. That is a meaningful difference for installations near bedrooms or neighbours.

On price

The Stiebel Eltron WWK 302 is $2,200 less than the Sanden Eco Plus 315L. That is a significant price gap. Consider whether the extra capacity, efficiency, or warranty of the Sanden Eco Plus 315L justifies the premium for your household.

Stiebel Eltron WWK 302 Full Specs → Sanden Eco Plus 315L Full Specs →

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