Geofencing automates your air con by using your smartphone's location to trigger it on as you approach home and off when you leave a set radius, rather than relying on a fixed clock schedule. It needs a wifi-enabled air conditioner or retrofit controller, the relevant app, and location permissions turned on for that app.
What Is Geofencing and How Does It Work With Air Con
Geofencing draws an invisible virtual boundary, usually a circle with a radius you choose, around your home's GPS coordinates. Your smart air con app watches your phone's location in the background and compares it to that boundary. Cross it heading home, and the app can tell your air conditioner to start cooling or heating. Cross it heading out, and it can switch the unit off or into a low-power standby mode.
This is different to a plain schedule, which just fires at a set time regardless of whether anyone is actually coming home. If you leave work early, get stuck in traffic, or work from home some days, a timer either wastes energy running an empty house or leaves you walking into a stinking hot living room.
How Your Phone Tells Your Aircon Where You Are
Most geofencing-capable apps use your phone's GPS and network location in the background, sending periodic updates to the app's cloud service. When you cross the geofence boundary, the app sends a command to your air con (directly if it's wifi-connected, or via a smart controller if it's an older unit). This all happens over the internet, so you'll need reasonably reliable home internet and a phone with location services and background app refresh enabled.
Geofencing vs Simple Schedules
Schedules are simple and don't depend on your phone's battery or location accuracy, but they're rigid. Geofencing adapts to your actual movements, which suits people with variable hours, shift work, or households where someone is often in and out during the day. Many apps let you combine both: a schedule as a fallback, with geofencing overriding it when you're clearly away or inbound. If your routine is genuinely fixed every day, a timer alone might be all you need, and it's one less thing to troubleshoot.
What You Need to Geofence a Split System
The hardware requirement depends on whether your existing air conditioner already has wifi built in, or whether you're adding smart control to an older unit via its infrared remote signal.
If Your Air Con Has Built-In Wifi
Newer split systems from major brands often ship with their own wifi module and app, which may already support location-based automation or integrate with a smart home platform that does. Check the manufacturer's app first. If it doesn't support geofencing natively, a dedicated smart home automation platform may still be able to trigger it. That's provided it has an open API or works with a shared voice assistant ecosystem.
If Your Air Con Is Older (Retrofit Controllers)
If your split system only came with a basic infrared remote, you'll need a retrofit smart controller that sits in the room and mimics the remote's signals over wifi. These are the most practical geofencing option for the huge number of older reverse-cycle units still running in Australian homes.
The Bing Lee Smart Air Conditioner WiFi Controller is built for exactly this scenario: anyone wanting remote control of a non-smart air conditioner via their smartphone. It sits near the unit, learns your remote's commands, and connects to your home wifi. This lets the manufacturer's app send on/off and temperature commands remotely. That remote control is the foundation geofencing automation builds on top of.
Bing Lee Smart Air Conditioner WiFi Controller
Best for: Australians wanting to add app scheduling, voice commands, and climate control to an existing remote-controlled air conditioner via third-party Sensibo hardware retailed by Bing Lee.
What we like
- Works with split system, window, and portable air conditioners that use an infrared remote control, according to the manufacturer.
- Provides smart features including 7-day scheduling, geofencing, and automated temperature balancing via Climate React, per the brand.
- Integrates with Google Home and Amazon Alexa for voice-activated temperature adjustments.
- Runs on standard mains power via a 5V USB adapter with an Australian plug, eliminating the need for hardwired electrical changes.
Worth knowing
- Bing Lee does not manufacture an own-brand controller, retailing third-party Sensibo hardware instead.
- Requires an unobstructed line of sight to the air conditioner and cannot detect manual adjustments made with the original remote.
- Advanced energy analytics, historical graphing, and automated geofencing require an optional Sensibo Plus subscription, according to product notes.
Also stocked at: Amazon AUAppliances Online
The Sensibo Air Smart Air Conditioner Controller is aimed at people wanting to control an existing air conditioner via app or voice assistant. Its ecosystem is commonly used for geofencing-style automation because it tracks occupancy and location through its own app. It's worth checking the app's current feature set before buying, since automation capabilities can change between app versions and aren't something we can verify as fixed specifications here.
Sensibo Air Smart Air Conditioner Controller
Best for: Australian renters and homeowners wanting app, scheduling, and voice platform control for existing infrared-operated air conditioning units.
What we like
- Integrates natively with Apple Home, Google Home, Amazon Alexa, SmartThings, and Home Assistant, per Sensibo.
- Operates without a mandatory subscription for core functions like geofencing, schedules, and remote app access.
- Compatible with virtually any air conditioner or heat pump that uses an infrared remote control, according to the manufacturer.
- Australian retail packages include a 240V Australian mains power plug adapter alongside the micro-USB cable.
Worth knowing
- Unidirectional infrared communication causes state drift if household members use the original manual remote control.
- Connects only to 2.4 GHz Wi-Fi networks and lacks native Matter support, according to Sensibo specifications.
- Requires an unblocked, direct line of sight within six metres of the air conditioner's infrared receiver.
- Advanced automations like open-window detection, anti-mould cycles, and long-term data logs require a paid Sensibo Plus subscription.
The Aircon Off Universal Air Conditioner Smart Remote suits split-system owners who mainly want to manage energy use rather than chase every smart home feature. Your priority may simply be making sure the air con isn't left running all day while everyone's out. If so, a straightforward app-controlled remote like this, paired with location-based automation in a compatible app, may be enough. You may not need a more feature-heavy ecosystem.
Aircon Off Universal Air Conditioner Smart Remote
Best for: Short-stay accommodation hosts, landlords, and households wanting to enforce split-system temperature limits with a locked, physical infrared remote rather than connected apps.
What we like
- Tamper-proof locking lets property owners set and lock minimum cooling and maximum heating limits, according to Aircon Off.
- Universal infrared database covers major split-system brands via direct code entry or auto-search, per the manufacturer.
- Requires no home Wi-Fi network, cloud subscription, or smartphone app to configure and operate.
- Comes with a wall-mounting bracket and maintains standard split-system mode and fan-speed controls.
Worth knowing
- Lacks Wi-Fi, Zigbee, or smart-home platform support, offering no integration with Apple Home, Google Home, Alexa, or Home Assistant.
- Auto-search pairing can be slow if the air conditioner model code is not explicitly listed on the supplied chart.
- Requires direct line of sight to the split-system receiver and relies on AAA batteries.
Also stocked at: eBay AU
If you haven't yet retrofitted your split system at all, start with our guide on making your split system air conditioner smart without replacing it. It covers the basics of choosing a controller before you layer geofencing on top.
Setting Up Geofencing Step by Step
Most apps follow a similar sequence, though menu names vary between brands.
- Install the air con's app (or the retrofit controller's app) and connect the controller to your home wifi network, which typically needs to be 2.4GHz rather than 5GHz for many smart home devices.
- Grant the app location permission, usually "Always" rather than "While using the app", since geofencing needs to work when the app is closed.
- Set your home location as the centre point, either by letting the app detect your current GPS position at home or by dropping a pin manually.
- Choose a geofence radius (see below).
- Define the trigger actions: what temperature and mode to set on arrival, and whether to turn off, go to eco mode, or simply stop cooling on departure.
- Test it by walking or driving the boundary a few times before trusting it unattended. Keep an eye on your energy use for the first week or two to see how it behaves in practice.
Choosing a Geofence Radius
Too tight a radius (say, 200 metres) can mean the air con only triggers once you're basically pulling into the driveway. That defeats the purpose if you want the place cool by the time you walk in. Too wide a radius (several kilometres) can trigger false starts if your daily route takes you near home without actually going there, such as dropping kids at a nearby school. A radius of around 1 to 3 kilometres is a common practical starting point for suburban areas, adjusted based on how your local roads and your commute actually work.
Multi-Person Households and Geofencing
Most geofencing apps support multiple phones, with rules like "turn on when the first person arrives" or "turn off only when everyone has left." Decide which logic suits your household before setup, since getting it backwards (say, switching off as soon as one person leaves while others are still home) is a common early frustration. Some people in your household may not want location tracking running on their phone. In that case, a shared household logic based on just one or two primary phones is a reasonable compromise, with manual override for everyone else.
Energy and Comfort Trade-offs
Geofencing aims to reduce the time your air con runs an empty house, but the actual savings depend heavily on your routine, your home's insulation, and local climate. A well-sealed home might stay comfortable for longer after you leave. A home with poor insulation or large west-facing windows can heat up fast in summer. That means geofencing alone won't do much if the house needs a long cooling run once you're back.
Running Costs Considerations
Because we can't verify exact running costs or savings figures for your specific home, it's worth treating any percentage savings claims from manufacturers with some scepticism. Instead, compare your own electricity bills before and after a few weeks of use. Reverse-cycle systems are generally more efficient at maintaining a temperature than repeatedly cooling a hot house from scratch. So very frequent full on/off cycling triggered by a tight geofence boundary might not always be the most efficient pattern.
Solar Households
If your home has rooftop solar, the best time to run air con for cost reasons is often the middle of the day when generation is highest. That doesn't always line up neatly with when geofencing would naturally trigger (typically late afternoon as people head home). It's worth reading our piece on running your reverse cycle air conditioner off rooftop solar instead of the grid if you want to combine geofencing with solar-aware scheduling. Some setups allow both rules to work together.
Common Problems and Fixes
Geofencing is convenient when it works, but it's not foolproof, and a few recurring issues are worth knowing about before you rely on it.
Phone Location Drift
GPS accuracy can vary, especially in apartment blocks, underground car parks, or areas with tall buildings nearby, sometimes called urban canyon effects. If your air con is triggering inconsistently, check that location services are set to high accuracy mode on your phone. Also check that battery-saving settings aren't restricting the app's background location access, which is a common culprit on Android phones in particular.
Delayed Triggers
Some apps poll location periodically rather than constantly, which can mean a delay of several minutes between crossing the geofence and the air con actually responding. If you need the house cool exactly on arrival, you may want to set a slightly larger radius to account for this lag, giving the system a head start.
Renters and Strata Considerations
Retrofit wifi controllers like the ones discussed above generally sit externally to the unit and don't require altering the air conditioner itself. That can make them more straightforward for renters than options involving fixed wiring changes. That said, tenancy agreements and strata by-laws vary, and some buildings have rules about devices affecting shared wifi infrastructure or external fittings. It's worth checking your lease or body corporate rules before installing anything. Get written permission where required rather than assuming it's fine. We're not in a position to confirm what any specific lease or strata by-law allows, so treat this as a prompt to check your own paperwork rather than a settled answer.
If your home uses ducted air conditioning with multiple zones, geofencing a whole-house system works a little differently to a single split system. It's worth reading our explainer on whether ducted air con zoning can be made smart before assuming a single geofence rule will suit every room. If you are planning an upgrade, see our guide to what smart zoning costs on ducted systems across both new installations and retrofits.
Sources
- NSW Government: Strata renovation rules
- NSW Government: Making changes to a rental property
- Consumer Affairs Victoria: Renters making changes to the property
Where to buy
Retailers stocking the products in this guide. Prices and stock change often, so check the retailer before you buy. We may earn a commission from these links at no extra cost to you.
- Bing Lee Smart Air Conditioner WiFi Controller: Check price at Amazon AU · Check price at The Good Guys · Check price at Harvey Norman
- Sensibo Air Smart Air Conditioner Controller: Check price at Amazon AU · Check price at JB Hi-Fi · Check price at Kogan
- Aircon Off Universal Air Conditioner Smart Remote: Check price at The Good Guys · Check price at Aircon Off
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