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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 4.2 kW · cooling and heating

Panasonic CS-TZ42WKEW / CU-TZ42WKE

A++

Uses less electricity than 65% of the 5,158 split air conditioners, 4–5 kW on the EU register. At your selected price (European Union) that is €65 a year, €651 over ten years.

Cooling, SEER
6.4
Typical 6.8
Heating, SCOP
4.0
Typical 4.1
Cooling cost
€65 / year
+€357 if you also heat with it (average climate)

Near the middle of its group: 9 % below the typical 254 kWh. Class A++ is the most common class in this group (69% of models). Heating efficiency (SCOP 4.0) is below the typical 4.1 of its group. Panasonic has 101 models in this group; this one is number 33 among them. On the register since 2022 and still on sale.

Where it stands

Rank 1,759 of 5,158 split air conditioners, 4–5 kW by yearly consumption. 1,758 use less.

Median 254 This model · 230 100 850 kWh ← uses less · uses more →

Next to it in the ranking

  1. A++ Hitachi RAM-53NE2F / RAK-25REF + RAK-50REF 230 kWh same
  2. A++ Hitachi RAM-53NE3F / RAK-25REF + RAK-50REF 230 kWh same
  3. A++ Panasonic CS-TZ42WKEW / CU-TZ42WKE 230 kWh
  4. A++ Mitsubishi Electric MSZ-LN50VG2V / MUZ-LN50VGHZ 230 kWh same
  5. A++ LG UUB1 U20/UV18FH N10 230 kWh same
See the full ranking

What it will cost you

Period CS-TZ42WKEW / CU-TZ42WKE 7733704026 Difference
1 year €65 €41 −€24
5 years €326 €204 −€122
10 years €651 €408 −€244
15 years €977 €612 −€365

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 230 kWh / yr
Heating, average climate 1,260 kWh / yr

Heating by climate zone

Climate SCOP kWh / yr
Warmer (e.g. Athens) 5.2 512
Average (e.g. Strasbourg) 4.0 1,260
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++ Panasonic CS-TZ42WKEW / CU-TZ42WKE (this model)
4.2 kW6.4 230 — —
4.0 kW8.5 144 €24 €244
4.0 kW8.5 144 €24 €244
4.1 kW2.6 145 €24 €241
4.2 kW9.9 148 €23 €232
4.2 kW9.9 148 €23 €232

Label and product sheet

Energy class cooling / heating
A++ / A+
SEER
6.4
SCOP warmer / average / colder
5.2 / 4.0 / –
Cooling design load
4.2 kW
Heating design load (average)
3.6 kW
Yearly cooling
230 kWh
Yearly heating (average climate)
1,260 kWh
Sound power indoor / outdoor
60 / 64 dB(A)
Refrigerant
R32 (GWP 675)

Model numbers and history

Registered by Panasonic under one model number.

CS-TZ42WKEW / CU-TZ42WKE

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

Questions

How much does the Panasonic CS-TZ42WKEW / CU-TZ42WKE cost to run?

At one cooling season as on the label it uses about 230 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €65 a year, or €651 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 6.4 and SCOP 4.0 in the average climate: higher is better.