Name: Westinghouse WSD91HWA-E/WSD91HWA-I
Brand: Westinghouse
SKU: AAC7558

Climate zone

Electricity pricec/kWh

Energy rating (cooling): 4.5; Heating: 1.5
Annual electricity use: 4,785 kWh; 420 cooling + 4,365 heating
Estimated running cost: $1,579 / year; $132 / month · $15,791 over 10 years
Capacity: 9.1 kW cooling; 10.4 kW heating

8% more electricity than the median of 127 comparable 10 kW reverse cycle split system registrations (4,446 kWh a year) in the cold zone. Uses less than 32% of them.

Across all 3,611 air conditioner registrations sold in Australia, it uses less than 40% (this compares very different sizes, so the cohort figure above is the useful one).

coolingheatingClick a zone to use it across the page.

Annual kWh is the government label figure for a residential user in the cold zone (Canberra climate: Canberra, Hobart, Ballarat, alpine areas). All of New Zealand is the cold zone on the Zoned Energy Rating Label. Cost = kWh × 33c/kWh in NZD; change the price above to your tariff.

Westinghouse WSD91HWA-E running cost by climate zone

Climate zone	kWh / year	Per month	Per year	5 years	10 years
Cold zone (Canberra, Hobart, Ballarat, alpine areas)	4,785	$132	$1,579	$7,895	$15,791
Mixed zone (Sydney, Melbourne, Adelaide, Perth)	2,164	$60	$714	$3,571	$7,141
Hot zone (Brisbane, Darwin, Cairns, Townsville)	2,171	$60	$716	$3,582	$7,164

At 33c/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.

Heat pumps that use less electricity

Same configuration and type, cooling capacity within 12% of 9.1 kW, at least 3% lower annual kWh in the cold zone.

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Daikin RZAC100C2Y1 / FCA100CVMA11.2 kW heating10 kW cooling1,073 kWh/yr	10 kW	11.2 kW	2.5	1,073	$354	99% of similar
Panasonic U-100PZ4R8 / S-1014PU3E10 kW heating10 kW cooling3,376 kWh/yr	10 kW	10 kW	3.5	3,376	$1,114	97% of similar
Panasonic U-100PZ3R5 / S-1014PU3E10 kW heating10 kW cooling3,376 kWh/yr	10 kW	10 kW	3.5	3,376	$1,114	97% of similar
TCL TAC-28CHSD/TPH11IT8.5 kW heating8.2 kW cooling3,401 kWh/yr	8.2 kW	8.5 kW	3.5	3,401	$1,122	82% of similar
Braemar TCHV80T1S/TSHV80T1S8.5 kW heating8.2 kW cooling3,401 kWh/yr	8.2 kW	8.5 kW	3.5	3,401	$1,122	82% of similar

Heat pumps similar to the Westinghouse WSD91HWA-E

Technically comparable registrations: same configuration and type, capacity within 12%.

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Carrier 38QHB090N8-1/42QHB090N8-110.1 kW heating9.1 kW cooling4,554 kWh/yr	9.1 kW	10.1 kW	4	4,554	$1,503	41% of similar
Kogan KASSSAC90HE9.5 kW heating9 kW cooling3,668 kWh/yr	9 kW	9.5 kW	3.5	3,668	$1,210	89% of similar
Panasonic U-100PZ3R5/S-100PK3R9 kW heating9 kW cooling3,534 kWh/yr	9 kW	9 kW	2.5	3,534	$1,166	95% of similar
Kogan KASSSAC90HD9.5 kW heating9 kW cooling3,668 kWh/yr	9 kW	9.5 kW	3.5	3,668	$1,210	89% of similar
Midea MFAB-90WD/MFAB-90ND9.5 kW heating9 kW cooling3,874 kWh/yr	9 kW	9.5 kW	4	3,874	$1,278	76% of similar
Midea MFAG90VB-W/MFAG90VB-N9.5 kW heating9 kW cooling3,874 kWh/yr	9 kW	9.5 kW	4	3,874	$1,278	76% of similar
Carrier 38QAF090N8/42QAF090N89.5 kW heating9 kW cooling3,874 kWh/yr	9 kW	9.5 kW	4	3,874	$1,278	76% of similar
Panasonic U-100PZ3R8/S-100PK3R9 kW heating9 kW cooling3,534 kWh/yr	9 kW	9 kW	2.5	3,534	$1,166	95% of similar

Compare WSD91HWA-E/WSD91HWA-I with another model

Westinghouse WSD91HWA-E specifications

Type: Reverse cycle
Configuration: Split system
Air distribution: Non-ducted
Indoor unit: Wall hung
Rated cooling capacity (35 °C): 9.10 kW
Cooling power input: 2.38 kW
Rated heating capacity (7 °C): 10.40 kW
Heating power input: 3.07 kW
EER, full load (tested): 3.79
COP, full load (tested): 3.43
Rated AEER: 3.82
Rated ACOP: 3.38
Standby power (PIA): 1.3 W
Compressor: Variable speed, Inverter
Refrigerant: R32
Power supply: Single phase
Indoor sound power: 61.7 dB(A)
Outdoor sound power: 68.5 dB(A)
Demand response (AS/NZS 4755): Yes
Country of manufacture: China

Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.

Westinghouse WSD91HWA-E 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	TCSPF	HSPF
Coldcommercial	commercial	–	–	342	1,316	19.29	3.49
Coldresidential	residential	4.5	1.5	420	4,365	6.04	3.11
Mixedcommercial	commercial	–	–	679	614	11.51	4.26
Mixedresidential	residential	4.0	2.0	658	1,506	5.81	3.76
Hotcommercial	commercial	–	–	1,068	116	15.97	4.83
Hotresidential	residential	4.5	3.0	1,984	187	6.00	4.76

Part-load test points (23 values)

c__t1_min_cap_power_rated: 830 W
h__h1_min_cap_power_rated: 537 W
h__h2_ext_cap_power_rated: 3147 W
c__t1_half_cap_power_rated: 1060 W
c__t1_have_min_cap_results: Yes
h__h1_half_cap_power_rated: 1086 W
h__h1_have_min_cap_results: Yes
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__h1_min_cap_heat_cap_rated: 2700 W
h__h2_ext_cap_heat_cap_rated: 7600 W
h__h1_half_cap_heat_cap_rated: 5100 W
h__h2_is_capable_extended_load: Yes
c__low_temp_min_cap_power_rated: 439 W
c__t1_min_cap_cooling_cap_rated: 3240 W
c__low_temp_half_cap_power_rated: 745 W
c__t1_half_cap_cooling_cap_rated: 4500 W
c__low_temp_have_half_cap_results: Yes
c__low_temp_min_cap_cooling_cap_rated: 3100 W
c__low_temp_half_cap_cooling_cap_rated: 4550 W

Other model numbers on registration AAC7558

Registered together and sharing the same test results. Usually variants of the same unit.

New Zealand E3 registration details

Registration number: AAC7558
GEMS registration id: 154750
Status: approved, available (self-reported)
Registration expires: 7 June 2028
Registered for sale in: Australia, New Zealand
Family: WSD91HWA-E/WSD91HWA-I
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: E3 programme registration data (EECA, New Zealand) (trans-Tasman E3 registration data published by DCCEEW on data.gov.au, CC BY 3.0 AU). Dataset published 25 September 2026; last checked 26 September 2026. How the derived figures are calculated.