<!--
{
  "availability" : [
    "iPadOS: 10.0.0 - 15.0.0",
    "ios: 10.0.0 - 15.0.0",
    "maccatalyst: 13.1.0 - 15.0.0",
    "macos: -",
    "tvos: -",
    "watchos: -",
    "xros: 1.0.0 - 1.0.0"
  ],
  "documentType" : "symbol",
  "framework" : "SiriKit",
  "identifier" : "/documentation/Intents/INSetClimateSettingsInCarIntent/fanSpeedPercentage-ep0u",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Intents"
    ],
    "preciseIdentifier" : "c:objc(cs)INSetClimateSettingsInCarIntent(py)fanSpeedPercentage"
  },
  "title" : "fanSpeedPercentage"
}
-->

# fanSpeedPercentage

A floating-point value indicating the requested fan speed specified as a percentage of the maximum speed.

iOS, iPadOS, Mac Catalyst, tvOS, visionOS, watchOS:

```
@property (nonatomic, copy, readonly, nullable) NSNumber * fanSpeedPercentage;
```

macOS:

```
@property (atomic, copy, readonly, nullable) NSNumber * fanSpeedPercentage;
```

## Discussion

Convert the value in this property to an appropriate fan speed setting in your vehicle. For example, if the user asks to set the fan speed to 50%, select a fan speed halfway between the minimum and maximum values.

This property is `nil` when the user modified a different climate control setting.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)