Australia · costs in AUD
Cooling only split system air conditioner, wall hung
Mitsubishi Electric MUY-GW42VFD/MSY-GW42VFD Air Conditioner
Mitsubishi Electric MUY-GW42VFD/MSY-GW42VFD is a 4.2 kW cooling only split system air conditioner registered under Australia’s Energy Rating (GEMS) scheme (registration AAC6654).
A newer registration of this model exists: AAC9098.
- Energy rating (cooling)
- 3
- Annual electricity use
- 365 kWh
- Estimated running cost
- $117 / year
- $10 / month · $1,168 over 10 years
- Capacity
- 4.2 kW cooling
34% more electricity than the median of 23 comparable 3.5 kW cooling only split system registrations (273 kWh a year) in the mixed zone. Uses less than 0% of them.
Across all 3,681 air conditioner registrations sold in Australia, it uses less than 97% (this compares very different sizes, so the cohort figure above is the useful one).
Annual kWh is the government label figure for a residential user in the mixed zone (Richmond NSW climate: Sydney, Melbourne, Adelaide, Perth). Mixed climate zone shown by default (Sydney, Melbourne, Adelaide, Perth); switch to cold or hot. Cost = kWh × 32c/kWh in AUD; change the price above to your tariff.
Mitsubishi Electric MUY-GW42VFD running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 232 | $74 | $742 |
| Mixed zone | 365 | $117 | $1,168 |
| Hot zone | 1,047 | $335 | $3,350 |
At 32c/kWh. Formula: cost = annual kWh × price. The kWh figure is the label’s residential estimate for that zone; commercial-profile figures are in the specifications.
Air conditioners that use less electricity
Same configuration and type, cooling capacity within 12% of 4.2 kW, at least 3% lower annual kWh in the mixed zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Mitsubishi Electric MUY-GW42VFD/MSY-GW42VFD4.2 kW cooling330 kWh/yr | 3.5 | $106 | |
| Mitsubishi Electric MUY-GW42VFD2/MSY-GW42VFD24.2 kW cooling330 kWh/yr | 3.5 | $106 | |
| Daikin RKM46WVMA / FTKM46WVMA4.6 kW cooling337 kWh/yr | 4 | $108 | |
| Daikin RKM46W2VMA / FTKM46W2VMA4.6 kW cooling341 kWh/yr | 4 | $109 |
Air conditioners similar to the Mitsubishi Electric MUY-GW42VFD
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Daikin RKM46WVMA / FTKM46WVMA4.6 kW cooling337 kWh/yr | 4 | $108 | |
| Daikin RKM46W2VMA / FTKM46W2VMA4.6 kW cooling341 kWh/yr | 4 | $109 |
Other Mitsubishi Electric models of similar capacity
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Mitsubishi Electric MUY-GW42VFD2/MSY-GW42VFD4.2 kW cooling330 kWh/yr | 3.5 | $106 | |
| Mitsubishi Electric MUY-GW42VFD2/MSY-GW42VFD2 Series4.2 kW cooling330 kWh/yr | 3.5 | $106 |
Compare MUY-GW42VFD/MSY-GW42VFD with another model
Mitsubishi Electric MUY-GW42VFD specifications
- Type
- Cooling only
- Configuration
- Split system
- Air distribution
- Non-ducted
- Indoor unit
- Wall hung
- Rated cooling capacity (35 °C)
- 4.20 kW
- Cooling power input
- 1.18 kW
- Rated heating capacity (7 °C)
- –
- Heating power input
- –
- EER, full load (tested)
- 3.55
- COP, full load (tested)
- –
- Rated AEER
- 3.51
- Rated ACOP
- –
- Standby power (PIA)
- 5.0 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Single phase
- Indoor sound power
- 56 dB(A)
- Outdoor sound power
- 58.2 dB(A)
- Demand response (AS/NZS 4755)
- Yes
- Country of manufacture
- Thailand
Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.
Mitsubishi Electric MUY-GW42VFD zoned energy rating figures
As published for each climate zone. Residential figures drive the star ratings; commercial figures assume a commercial usage pattern.
| Zone | Profile | Cooling stars | Heating stars | Cooling kWh | Heating kWh |
|---|---|---|---|---|---|
| Coldcommercial | commercial | – | – | 460 | – |
| Coldresidential | residential | 3.0 | – | 232 | – |
| Mixedcommercial | commercial | – | – | 599 | – |
| Mixedresidential | residential | 3.0 | – | 365 | – |
| Hotcommercial | commercial | – | – | 1,361 | – |
| Hotresidential | residential | 3.5 | – | 1,047 | – |
Part-load test points (9 values)
- c__t1_half_cap_power_rated
- 410 W
- c__t1_have_min_cap_results
- No
- c__low_temp_full_cap_power_rated
- 1078.52 W
- c__low_temp_half_cap_power_rated
- 350 W
- c__low_temp_have_min_cap_results
- No
- c__t1_half_cap_cooling_cap_rated
- 2100 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_full_cap_cooling_cap_rated
- 4523.4 W
- c__low_temp_half_cap_cooling_cap_rated
- 2260 W
Related Mitsubishi Electric model numbers starting with MUYGW42VFDMSYGW42VFD
2 model numbers on 1 other registration. Variants registered separately can carry different star ratings and energy figures; check the registration number on the label.
| Model | Registration | Stars | kWh / yr | Registration expires |
|---|---|---|---|---|
| MUY-GW42VFD/MSY-GW42VFD | AAC9098 | 3.5 | 330 | 20 July 2030 |
| MUY-GW42VFD/MSY-GW42VFD2 | AAC9098 | 3.5 | 330 | 20 July 2030 |
Australian GEMS registration details
- Registration number
- AAC6654
- GEMS registration id
- 146507
- Status
- approved, available (self-reported)
- Registration expires
- 4 May 2027
- Registered for sale in
- Australia, New Zealand
- Family
- –
- Regulatory standard
- [SEER Non Multi-Split <=65kW] GEMS (Air Conditioners up to 65kW) Determination 2019
- Test standard
- AS/NZS 3823.1.1:2012
- MEPS
- 2019
- Product class
- Class 9
Source: Australian Government Energy Rating (GEMS) registration data, DCCEEW via data.gov.au (CC BY 3.0 AU). Dataset published 25 September 2026; last checked 26 September 2026. Manufacturer: MitsubishiElectric.com.au. How the derived figures are calculated.