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Costs for 0.283 €/kWh · Eurostat 2026 H1

Comparison · Air conditioners

Ariston PENTA 121 NEVIS NET_UA1-I 9+9+9+12 vs HTW5MS39212IX39B5

Ariston PENTA 121 NEVIS NET_UA1-I 9+9+9+12 uses 131 kWh less a year: €37 a year at your price, €371 over ten years.

A++ Ariston PENTA 121 NEVIS NET_UA1-I 9+9+9+12 A++ HTW5MS39212IX39B5
Yearly consumption 563 kWh694 kWh
Cost per year €159€197
Cost over 10 years €1,594€1,965
Rank in its group 11,759 / 14,30113,505 / 14,301
Group Split air conditioners, 6 kW and overSplit air conditioners, 6 kW and over
Energy class cooling / heating A++ / A A++ / A+
SEER 7.1 6.1
SCOP warmer / average / colder 4.8 / 3.8 / – 3.8 / 3.8 / 3.8
Cooling design load 11.5 kW 12.1 kW
Heating design load (average) 8.8 kW 10.1 kW
Yearly cooling 563 kWh 694 kWh
Yearly heating (average climate) 3,249 kWh 3,142 kWh
Sound power indoor / outdoor 56 / 69 dB(A) 54 / 70 dB(A)
Refrigerant R32 (GWP 675) R32 (GWP 12)

If HTW5MS39212IX39B5 is cheaper to buy, the price gap is paid back by lower running costs only when it is smaller than the cost difference over the years you keep it. Work it out with your prices →