What to expect from an aircon servicing appointment, step by step
By Sam Lee · Updated 2026-05-18
If you’ve never had an aircon service done, or you’re not sure what you’re actually paying for, it helps to know the shape of a normal visit before someone is standing in your living room.
Before the technician arrives
Most bookings are confirmed the day before or the morning of, sometimes with a rough time window rather than an exact slot. It helps to clear the space under each indoor unit and make sure the outdoor unit, whether it’s on a balcony, a service ledge, or mounted on an external wall, is reachable. If you have pets, it’s worth keeping them in another room while the unit is open.
Step by step: what a routine visit looks like
- Walkthrough. The technician asks which units need attention and whether you’ve noticed anything specific, weak airflow, a smell, water dripping, unusual noise.
- Filter and coil clean. The indoor unit is opened, the filter is removed and washed or replaced, and the coil is cleaned of dust and light buildup.
- Drainage check. The condensate drain is checked and cleared if it’s slow, this is one of the most common causes of water dripping from the unit.
- Function test. The unit is run to confirm it’s cooling, the fan speeds work, and there’s no unusual noise or vibration.
- Report back. The technician tells you what they found, what’s fine, and what needs a follow-up job like a gas top-up or chemical wash, with a separate quote for anything beyond the routine service.
How long it actually takes
| Job | Typical time per unit |
|---|---|
| Routine service (clean, check, test) | 20 to 40 minutes |
| Chemical wash | 45 to 90 minutes |
| Gas top-up | 30 to 60 minutes, plus leak check |
| Multiple units in one visit | Each additional unit adds time, but setup is shared |
What a good technician does differently
The difference between a rushed visit and a proper one usually shows up in the details: did they actually remove and wash the filter, or just wipe the front panel? Did they check the drain, or just glance at the unit? Did they explain what they found in terms you understood, or hand you a bill with no context? None of this takes much extra time, but it’s the part that determines whether the service was worth booking.
After the visit
Ask for a short summary of what was done and, if anything, what to watch for before the next visit. If a follow-up job was recommended, get that quoted separately in writing rather than agreeing to it on the spot, especially if it’s your first time using that contractor.
Questions worth asking during the visit
You don’t need to hover over the technician’s shoulder, but a few questions during the appointment help you understand what’s actually happening. Ask them to show you the filter before and after cleaning, it’s a quick, visible way to see the difference the service made. If they mention the drain was slow, ask whether that’s something likely to recur or a one-off. If they flag a part that’s wearing down, ask roughly how much longer it’s likely to last rather than just accepting a quote for immediate replacement.
What a first-time visit with a new contractor should tell you
If you’re using a contractor for the first time, the appointment itself is a useful trial. Did they arrive within the agreed window, or with reasonable notice if running late? Did they explain what they were doing without being asked, or work in silence and hand you a bill? Did they seem familiar with your unit’s brand, or were they clearly guessing at unfamiliar controls? These small signals tell you more about whether to book them again than the price alone ever will.
Booking the next one
Once the visit is done, it’s worth booking the next appointment while the timing is still fresh in your mind rather than waiting until the unit starts underperforming again. A consistent schedule, whichever frequency suits your household’s usage, tends to catch small issues long before they turn into an expensive repair.
Knowing roughly what to expect makes it easier to tell a thorough visit from a rushed one, and to ask the right questions if something feels off. You can compare contractors covering this work on our aircon servicing and maintenance hub, see how we score them on our methodology page, or head back to the homepage to browse by category.
FAQ
- How long does a standard aircon servicing appointment take?
- Expect roughly 20 to 40 minutes per unit for a routine service. A full chemical wash on the same unit takes longer, often an hour or more per unit.
- Do I need to be home for the whole appointment?
- You need to let the technician in and be reachable if they find something that needs your decision, like a leak that needs a separate quote. Many homeowners stay nearby rather than watching the whole visit.
- What should I clear away before the technician arrives?
- Move furniture or clutter from under the indoor unit and clear a path to the outdoor unit if it's accessible from inside your home, like a balcony or utility yard.
- Will the technician tell me if something else is wrong?
- A good technician flags issues on the spot, a slow leak, a failing part, unusual noise, and explains what it would cost to fix rather than just doing extra work without asking.