8.7 kWCarrier QSM Slim Line 8.7kW Ducted System
The 8.7kW Carrier QSM Slim Line Ducted (indoor 42QSM090D8S) is rated at 8.7kW cooling and sized for typical three-bedroom single-storey homes. As a guide it covers roughly 58 to 70m² of conditioned floor area, depending on zoning, insulation and ceiling height. It runs R32 refrigerant and carries Carrier’s 7 year residential parts and labour warranty. For more bedrooms or a larger floor plan, the 10.15kW is the next step up.
Part of the Carrier QSM Slim Line Ducted range, Carrier's ducted system line, in 8 sizes. Running costs below use the Sydney median rate; the Eastern Suburbs and Western Sydney pages cost systems on their own network tariffs. Check the size against your rooms, compare it with other 8.7 kW options, or ask about supply and installation.
About $637 a year at the current Sydney median electricity rate: $232 of cooling plus $405 of heating, from the official GEMS test figures.
The Carrier QSM Slim Line 8.7kW uses 701 kWh annually for cooling and 1222 kWh annually for heating according to official GEMS test data for Sydney's climate zone. These figures represent standard test conditions and will vary depending on your actual use, settings and local conditions. The system achieves a cooling efficiency rating of 3.5 stars and a heating efficiency rating of 2.5 stars under the zoned energy label for Sydney.
The unit has a rated cooling efficiency (AEER) of 3.24 and heating efficiency (ACOP) of 3.93. It uses R32 refrigerant. Your running cost depends on how often you run the system and your local electricity rate.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs, including GST · Refreshed monthly · Last updated October 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Carrier QSM Slim Line Ducted range| Brand | Carrier |
|---|---|
| Model | 42QSM090D8S |
| Series | Carrier QSM Slim Line Ducted |
| System type | Ducted System |
| Capacity | 8.7 kW |
| Refrigerant | R32 |
| ESP (rated/max) | up to 50 / 160 Pa |
| Power supply | 220-240V single phase |
| Warranty | 7 year parts & labour (residential) |
