MHI Avanti 5 kW split system
$2,100–$3,300
estimated installed price
Cooling
5 kW
3 stars
Heating
None
Cooling only
Indoor noise
58
dB(A) sound power, quieter than 74% of its size
Running cost
$141
a year, average zone, at 33c/kWh
Short answer
The MHI Avanti 5 kW split system (SRC18YSA-W/SRK18YSA-WF1) is a 5 kW cooling-only wall split rated 3 stars for cooling in the average climate zone. Installed, expect $2,100 to $3,300; the label's figures put running costs near $141 a year in an average-zone home.
Prices are estimates, not quotes (how we estimate them). Rebate rules checked September 2026.
Compare 3 quotes for my houseFull specifications
- Brand
- Mitsubishi Heavy Industries
- Series
- MHI Avanti
- Model numbers
- SRC18YSA-W/SRK18YSA-WF1
- Type
- Wall split, cooling only
- Cooling capacity
- 5 kW
- Cooling power input
- 1.39 kW
- Annual efficiency, cooling (AEER)
- 3.57
- Indoor sound power
- 58 dB(A)
- Outdoor sound power
- 61 dB(A)
- Refrigerant
- R32
- Power supply
- Single-phase
- Demand response capable
- Yes
- Country of manufacture
- Thailand
- Energy Rating registration
- AAC8235
- Registration valid until
- 2029-05-14
Star ratings and running cost by climate
The Zoned Energy Rating Label rates each unit for three climates. Annual energy is the label's estimate for typical use in that zone; the cost applies 33c/kWh, around the 2026–27 default electricity offer. Use the running cost calculator for your own hours and tariff.
| Climate zone | Cooling stars | Energy a year | Cost a year |
|---|---|---|---|
| HotBrisbane, Darwin | 3.5 stars | 1,246 kWh | $411 |
| AverageSydney, Adelaide, Perth | 3 stars | 427 kWh | $141 |
| ColdCanberra, Hobart, Melbourne | 3.5 stars | 270 kWh | $89 |
How it compares with other 5.0 kW units
- Cooling stars (average zone): 3 against a median of 3.5 across 35 5.0 kW wall split units, better than 6% of them.
- Indoor sound power: 58 dB(A) against a median of 60 dB(A), quieter than 74%.
- Estimated installed price for this size: $2,100 to $3,300. Brand and install difficulty move it within that band.
See the quietest and most efficient rankings.
Other sizes in the MHI Avanti range
Alternatives at 5.0 kW from other brands
Daikin 5 kW split system
RKM50WVMA / FTKM50WVMA
5 stars cooling · 61 dB(A)
Hitachi airHome 500 Cooling Only 5 kW split system
RAC-DJ50PCAT/RAK-DJ50PCAT
4.5 stars cooling · 60 dB(A)
Daikin 5 kW split system
RKM50W2VMA / FTKM50W2VMA
4.5 stars cooling · 61 dB(A)
Toshiba Seiya Classic 5.3 kW split system
RAS-18E2ACVG-A/RAS-18E2KCVG-A
4 stars cooling · 58 dB(A)
Daikin 4.6 kW split system
RKM46W2VMA / FTKM46W2VMA
4 stars cooling · 59 dB(A)
Daikin 4.6 kW split system
RKM46WVMA / FTKM46WVMA
4 stars cooling · 59 dB(A)
FAQ
Mitsubishi Heavy Industries SRC18YSA-W/SRK18YSA-WF1: common questions
How much does the MHI Avanti 5 kW split system cost installed?
Typically $2,100 to $3,300 supplied and installed in 2026 for a standard job at this size. Longer pipe runs, a new circuit, a second storey or removing an old unit add to it. Get up to three local quotes for your actual install.
How much does the MHI Avanti 5 kW split system cost to run?
Using the energy label's annual figures at 33c/kWh: about $411 a year in a hot zone, $141 in an average zone and $89 in a cold zone. The label assumes typical use; yours will differ with hours, set temperature and insulation.
Where is the Mitsubishi Heavy Industries SRC18YSA-W/SRK18YSA-WF1 made?
The Energy Rating register lists the country of manufacture as Thailand.
Is the MHI Avanti 5 kW split system quiet?
Its registered indoor sound power is 58 dB(A), against a median of 60 dB(A) for 5.0 kW wall split units, so it's quieter than about 74% of them. Brochures quote a lower sound pressure figure on the lowest fan speed; the register measures every model the same way.
Sources
Brand names and logos are trademarks of their owners, shown to identify the brands we compare. We are independent and not affiliated with any manufacturer.
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