Australia · costs in AUD
Reverse cycle multi-split / vrf air conditioner
Daikin REYA18AYM Air Conditioner
Daikin REYA18AYM is a 50 kW reverse cycle multi-split / vrf air conditioner registered under Australia’s Energy Rating (GEMS) scheme (registration AAC10050).
- Energy rating (cooling)
- 2.5
- Heating: 2
- Annual electricity use
- 13,077 kWh
- 4,362 cooling + 8,715 heating
- Estimated running cost
- $4,185 / year
- $349 / month · $41,846 over 10 years
- Capacity
- 50 kW cooling
- 56 kW heating
5% less electricity than the median of 42 comparable 50 kW reverse cycle multi-split / vrf registrations (13,803 kWh a year) in the mixed zone. Uses less than 55% of them.
Across all 3,680 air conditioner registrations sold in Australia, it uses less than 6% (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.
Daikin REYA18AYM running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 27,473 | $8,791 | $87,914 |
| Mixed zone | 13,077 | $4,185 | $41,846 |
| Hot zone | 13,215 | $4,229 | $42,288 |
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 50 kW, at least 3% lower annual kWh in the mixed zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Panasonic U-16MF3R750 kW heating45 kW cooling4,064 kWh/yr | 2.5 | $1,300 | |
| Toshiba MMY-MUP16S1HT8P-A50 kW heating45 kW cooling4,443 kWh/yr | 2.5 | $1,422 | |
| Toshiba MMY-MUP20S1HT8P-A63 kW heating56 kW cooling5,421 kWh/yr | 2.5 | $1,735 | |
| Mitsubishi Electric PUHY-M400YXM-A-BS45 kW heating45 kW cooling5,655 kWh/yr | 1.5 | $1,810 | |
| Mitsubishi Electric PUHY-M400YXM series45 kW heating45 kW cooling5,655 kWh/yr | 1.5 | $1,810 |
Air conditioners similar to the Daikin REYA18AYM
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Mitsubishi Electric PUHY-M450YXM series50 kW heating50 kW cooling6,542 kWh/yr | 1.5 | $2,093 | |
| Mitsubishi Heavy Industries FDC500KXZE256 kW heating50 kW cooling14,016 kWh/yr | 2.5 | $4,485 | |
| Mitsubishi Electric PUHY-M450YXM-A-BS50 kW heating50 kW cooling6,542 kWh/yr | 1.5 | $2,093 | |
| Mitsubishi Heavy Industries FDC500KXZRE250 kW heating50 kW cooling14,484 kWh/yr | 2 | $4,635 | |
| Toshiba MMY-MUP1801FT8P-A50.4 kW heating50.4 kW cooling14,382 kWh/yr | 3 | $4,602 | |
| Toshiba MMY-MUP18S1HT8P-A54 kW heating50.4 kW cooling5,465 kWh/yr | 2 | $1,749 | |
| Hitachi RAS-180RNCBLW56 kW heating50.4 kW cooling12,411 kWh/yr | 2 | $3,972 | |
| Hitachi RAS-180RNCCLW56 kW heating50.4 kW cooling11,937 kWh/yr | 2.5 | $3,820 |
Compare REYA18AYM with another model
Daikin REYA18AYM specifications
- Type
- Reverse cycle
- Configuration
- Multi-split / VRF
- Air distribution
- Ducted or non-ducted
- Indoor unit
- –
- Rated cooling capacity (35 °C)
- 50.00 kW
- Cooling power input
- 12.99 kW
- Rated heating capacity (7 °C)
- 56.00 kW
- Heating power input
- 14.00 kW
- EER, full load (tested)
- 3.67
- COP, full load (tested)
- 3.89
- Rated AEER
- 3.72
- Rated ACOP
- 3.87
- Standby power (PIA)
- 137.1 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Three phase
- Indoor sound power
- –
- Outdoor sound power
- –
- Demand response (AS/NZS 4755)
- No
- Country of manufacture
- Thailand
Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.
Daikin REYA18AYM 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 | – | – | 5,146 | 7,596 |
| Coldresidential | residential | 2.5 | 1.5 | 2,843 | 24,630 |
| Mixedcommercial | commercial | – | – | 6,745 | 3,656 |
| Mixedresidential | residential | 2.5 | 2.0 | 4,362 | 8,715 |
| Hotcommercial | commercial | – | – | 15,179 | 887 |
| Hotresidential | residential | 3.5 | 3.0 | 11,900 | 1,315 |
Part-load test points (18 values)
- h__h2_ext_cap_power_rated
- 13509 W
- c__t1_half_cap_power_rated
- 4553 W
- c__t1_have_min_cap_results
- No
- h__h1_half_cap_power_rated
- 5320 W
- h__h1_have_min_cap_results
- No
- h__h3_have_ext_cap_results
- No
- h__h2_have_full_cap_results
- No
- h__h2_have_half_cap_results
- No
- h__h3_have_full_cap_results
- No
- h__h3_have_half_cap_results
- No
- h__h2_ext_cap_heat_cap_rated
- 37465 W
- h__h1_half_cap_heat_cap_rated
- 28000 W
- h__h2_is_capable_extended_load
- Yes
- c__low_temp_half_cap_power_rated
- 3633 W
- c__low_temp_have_min_cap_results
- No
- c__t1_half_cap_cooling_cap_rated
- 25000 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_half_cap_cooling_cap_rated
- 25000 W
Australian GEMS registration details
- Registration number
- AAC10050
- GEMS registration id
- 178385
- Status
- approved, available (self-reported)
- Registration expires
- 8 April 2031
- Registered for sale in
- Australia, New Zealand
- Family
- –
- Regulatory standard
- [SEER Multi-Split <=65kW] GEMS (Air Conditioners up to 65kW) Determination 2019
- Test standard
- AS/NZS 3823.1.4:2012
- MEPS
- 2019
- Product class
- Class 21
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: daikin.com.au. How the derived figures are calculated.