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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 3.5 kW · cooling and heating

Warmtec KS35W

A+++

Uses less electricity than 88% of the 3,067 split air conditioners, 3 kW on the EU register. At your selected price (European Union) that is €40 a year, €402 over ten years.

Cooling, SEER
8.6
Typical 6.5
Heating, SCOP
4.6
Typical 4.1
Cooling cost
€40 / year
+€245 if you also heat with it (average climate)

In the most efficient quarter of its group: 23 % below the typical 184 kWh. Class A+++ is the best class any model in this group reaches. Heating efficiency (SCOP 4.6) is above the typical 4.1 of its group. Of 3 Warmtec models in this group, it is the most efficient. Registered in Aug 2026, one of the newer models in its group.

Where it stands

Rank 314 of 3,067 split air conditioners, 3 kW by yearly consumption. 313 use less.

Median 184 This model · 142 0 450 kWh ← uses less · uses more →

Next to it in the ranking

  1. A+++ Arielli ACSD-12DHG48 142 kWh same
  2. A++ Heiwa HXES2-2X30-V1 / HMIS3-20-V1 + HMIS3-20-V1 142 kWh same
  3. A+++ Warmtec KS35W 142 kWh
  4. A+++ Mijaki MJI-9912S - MJO9913S 142 kWh same
  5. A+++ F&U FVIN-12180 / FVOT-12181 142 kWh same
See the full ranking

What it will cost you

Period KS35W NF-ST30CR Difference
1 year €40 €1 −€39
5 years €201 €4 −€197
10 years €402 €8 −€394
15 years €603 €13 −€590

Is the more efficient model worth its price?

Years of use

Enter both purchase prices to see the total cost of ownership.

Cooling and heating

Cooling season 142 kWh / yr
Heating, average climate 866 kWh / yr

Heating by climate zone

Climate SCOP kWh / yr
Warmer (e.g. Athens) 5.5 901
Average (e.g. Strasbourg) 4.6 866
Colder (e.g. Helsinki) — —

Same size, lower running cost

On sale, at least 10% less energy, same size group

Model CoolingSEER kWh / yr Saves / year in 10 years
A+++ Warmtec KS35W (this model)
3.5 kW8.6 142 — —
3.0 kW50.0 3 €39 €394
3.0 kW9.3 102 €11 €113
3.0 kW8.8 103 €11 €110
3.0 kW8.8 103 €11 €110
3.0 kW9.0 112 €8 €85

Label and product sheet

Energy class cooling / heating
A+++ / A++
SEER
8.6
SCOP warmer / average / colder
5.5 / 4.6 / –
Cooling design load
3.5 kW
Heating design load (average)
2.8 kW
Yearly cooling
142 kWh
Yearly heating (average climate)
866 kWh
Sound power indoor / outdoor
35 / 50 dB(A)
Refrigerant
R290 (GWP 3)

Model numbers and history

Registered by Warmtec under one model number.

KS35W

  1. Placed on the EU market
  2. First published in the EU register (EPREL)

Questions

How much does the Warmtec KS35W cost to run?

At one cooling season as on the label it uses about 142 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €40 a year, or €402 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 8.6 and SCOP 4.6 in the average climate: higher is better.