Air conditioning repairs, Darwin
Aircon blowing warm, leaking down the wall or tripping the power? Fosters Air Conditioning & Electrical repairs split systems, ceiling cassettes and ducted systems across Darwin, Palmerston and the rural area. Sean is a refrigeration mechanic and an electrician, so we find the fault whichever side it is on.
$165 covers the call-out and first hour ($185 for multi-split and ducted). Mon to Fri, 7am to 5pm. No after-hours call-outs.

Common aircon faults we fix in Darwin
In the build-up, an aircon that stops cooling is more than an annoyance. These are the faults we see most.
Not cooling
The unit runs but the air is warm or barely cool. Common causes are a refrigerant leak, a failed capacitor or fan motor, or a coil so blocked that air can't get through it.
Leaking water inside
Water dripping from the indoor unit usually means a blocked drain line or a dirty drain tray. In Darwin's humidity these units make a lot of water, so a small blockage shows up fast.
Tripping the power
If the aircon trips the safety switch or circuit breaker, the fault could be in the unit or in the wiring and circuit that feed it. This is where having an electrician on the job matters.
Low on gas
Aircon refrigerant runs in a sealed loop. If it is low, there is a leak. We find and fix the leak before we regas, so you are not paying for the same gas twice.
Error codes, noise and ice
A flashing light or code on the indoor unit, a rattle or squeal, or ice on the pipes. Each points to a different fault, and we test to find which one.
How Fosters finds and fixes the fault
Sean and the team test the whole system: the indoor unit, the outdoor unit, the refrigerant pressures and the electrical supply. A tech without an electrical licence can only go so far with a power fault. Because Sean holds an electrical licence as well as a refrigerant handling licence, we also check the circuit, the isolator and the switchboard behind it.
Once we know the cause, we tell you what it is, what it costs to fix and whether the repair is worth it. If the unit is old and the repair is big, we will say so, and give you a price on a replacement to compare.
What we repair:
- Split systems, multi-splits, ceiling cassettes and ducted systems
- Refrigerant leaks, leak finding and regas
- Blocked drain lines and leaking indoor units
- Fan motors, capacitors, sensors and control boards
- Power supply, isolator and circuit faults
For wiring, circuits and switchboards, see our electrical services
Why call Fosters for aircon repairs in Darwin
Both trades on one visit
If the fault is electrical, you don't need to book a second trade. Sean can test and repair the aircon and the circuit it runs on.
A straight answer on fix or replace
We explain what is wrong and what each option costs. Julie summed it up: "Responsive and honest."
We tell you the cost first
$165 covers the call-out and first hour. Multi-split and ducted systems are $185 for the call-out and first hour. That is usually enough to find the fault, and you get a price for the repair before we do it.
Tell us if it is urgent
If your aircon has stopped, tick "Urgent" on the form or give us a call. We will do our best to fit urgent jobs in sooner during work hours, Monday to Friday, 7am to 5pm. We do not do after-hours or emergency call-outs after 5pm for now.
What happens when you call

Tell us what it is doing
Call or text 0473 639 372, or use the form. A photo of the unit, the error code or the leak helps us bring the right parts.

We test and diagnose
We test the unit and the electrics, find the cause and explain it in plain English.
You approve the price
You get the repair price before we start. If it is not worth fixing, we tell you.

We fix and test
We repair it, run it and check it is cooling before we leave.
Really thorough. Makes sure everything is done to a high standard with care.
Prompt and very helpful. Responsive and honest.
Sean came out to help us and did a wonderful job. We can not fault him. Great work, wonderful attitude and all round nice guy.
Get my aircon fixed
Tell us what the unit is doing and where you are. If it has stopped cooling, tick "Urgent" and we will do our best to get back to you sooner during work hours, Monday to Friday, 7am to 5pm. Otherwise we aim to get back to you within one business day.
0473 639 372Aircon playing up?
we test the unit and the powerSean and the team are often up a ladder or on a roof, so if we miss your call, leave a message or send a text and we will get back to you.
Frequently asked questions
Why is my aircon running but not cooling?
The most common causes are a refrigerant leak, a failed capacitor or fan motor, or a coil blocked with dirt. A blocked coil is fixed with a clean. A leak or a failed part needs a repair. Fosters tests the system to find which one it is before quoting.
Why is my air conditioner leaking water inside?
Usually the drain line is blocked or the drain tray is full of grime, so water spills out of the indoor unit instead of running outside. In Darwin's humidity this happens often. We clear the drain and clean the tray, and a regular clean helps stop it coming back.
Can you regas my aircon?
Yes. Fosters holds a refrigerant handling licence and ARCtick authorisation. If a unit is low on gas, it has a leak, so we find and fix the leak first, then regas and test it.
My aircon keeps tripping the power. Is it the aircon or the electrics?
It can be either. A failing compressor or fan motor can trip a breaker, and so can a wiring or circuit fault. Sean is a licensed electrician as well as a refrigeration mechanic, so he can test both and fix whichever is at fault in one visit.
Is my aircon worth repairing or should I replace it?
It depends on the age of the unit, the fault and the cost of the part. We give you the repair price and, if it makes sense, a replacement price, so you can compare them. We won't push a new unit if a repair will do the job.
Do you charge a call-out fee?
Yes. $165 covers the call-out and first hour. Multi-split and ducted systems are $185 for the call-out and first hour. That is usually enough to find the fault. You get the repair price before we start work.
