In most cases, repairing an air conditioner is cheaper upfront than replacing it. A minor fix often costs a few hundred dollars, while a new system installed in Hobart usually runs into the low thousands. The catch is that repair is not always the cheaper option over time. If your unit is old, breaking down repeatedly, or pushing your power bills up, replacing it can save you more money in the long run.
At QuickAir, we’ve completed more than 20,000 services across Australia, and “should I repair or replace?” is one of the most common questions our technicians get asked at a breakdown. The honest answer depends on three things: how old your unit is, how much the repair will cost, and how efficiently the system still runs. This guide walks through each of those so you can make the call with confidence, whether or not you book a technician.
How much does it cost to repair an AC in Hobart?
Most air conditioning repairs in Hobart fall somewhere between a cheap service call and a major part replacement. Simple jobs are inexpensive. Big mechanical failures are where the cost climbs.
Here are the typical price ranges we see across the Australian market:
| Repair type | Typical cost (AUD) |
| Service call or filter clean | $75–$200 |
| Refrigerant top-up | $160–$400 |
| Refrigerant leak repair | $225–$1,600 |
| Control board replacement | $120–$600 |
| Compressor or coil replacement | $500–$1,500+ |
The cheapest issues are often the most common ones. A clogged filter, a tripped thermostat, or a blocked drain can usually be sorted in a single visit for a modest fee. When our technicians attend a callout, they carry major spare parts, so straightforward faults are frequently fixed on the spot. We diagnose the fault on-site and talk you through the options before any repair work goes ahead, so you’re never surprised by the bill.
The figures above are guides, not quotes. The actual cost depends on the fault, the unit, and the parts involved.
How much does a new air conditioner cost in Hobart?
A new system costs more upfront than a repair, but it resets the clock on reliability and efficiency. Pricing depends mostly on the type and size of the unit you choose.
- Small split system (2 to 2.5 kW): roughly $600 to $2,800 for the unit
- Larger split system (5 to 9 kW): roughly $1,000 to $5,000 or more for the unit
- Installation labour for a split system: roughly $600 to $750
- Ducted reverse-cycle system: commonly $3,000 to $6,000 or more, supplied and installed
In practice, a new split system supplied and installed in Hobart often lands somewhere in the low-to-mid thousands. A whole-home ducted system sits higher again. If you decide to go ahead with a new system installed, the cost of the original diagnostic visit is credited toward the job, so you’re not paying twice for the assessment.
Repair vs replacement: a side-by-side cost comparison
Looking at upfront price alone, repair almost always wins. But the full picture includes running costs, warranty, and how many more years you’ll get out of the system.
| Factor | Repair | Replacement |
| Upfront cost | ~$75 to $1,500 depending on the fault | ~$2,000 to $6,000+ installed |
| Running costs | No change, you keep the old efficiency | Lower with a higher star-rated unit |
| Warranty | Usually 3 to 12 months on the new parts | Typically a 5-year manufacturer warranty |
| Remaining lifespan | A few more years if the unit is young | Resets to roughly 10 to 15 years |
| Best when | Unit is under 10 years with a minor fault | Unit is 10+ years or failing repeatedly |
The numbers make the trade-off clear. Repair buys you more time for a few hundred dollars now. Replacement costs more today but reduces future repair bills and can lower your running costs from day one.
When repairing your AC makes sense
Repair is usually the smart choice when the unit is still young and the fault is minor.
- The unit is under 10 years old and has been reliable
- The fault is small, such as a filter clean, a thermostat issue, or a refrigerant top-up
- The system still cools and heats well when it’s working
- The repair quote is a small fraction of the cost of a new unit
If your air conditioner ticks these boxes, paying for a repair almost always beats spending thousands on a replacement. A unit that has had a regular service and is otherwise in good condition is well worth keeping. The key is to get a clear, fixed quote first so you know exactly where the repair sits against the cost of a new system.
When replacing your AC is the smarter choice
Replacement starts to make financial sense once the unit is older or the repairs keep coming.
- The unit is around 10 to 15 years old or older
- You’re calling for repairs every season
- There’s a major failure, such as a compressor or motor
- Power bills have climbed even though your usage hasn’t
Most split systems run reliably for around 10 years, and components begin to wear out once a unit passes the 12-year mark. At that age, one repair often leads to another. If you’re weighing a $1,000 compressor fix on a 12-year-old unit, that money is usually better put toward a new system that comes with a fresh warranty and lower running costs.
The 50% rule: a simple way to decide
A widely used industry guideline is the 50% rule: if the repair quote is more than half the price of a new unit, replacement is usually the better investment. The older the unit, the more strongly this rule points toward replacing.
For example, a $1,500 repair on a 12-year-old unit that would cost around $3,000 to replace is right at that 50% threshold. Add the unit’s age and likely future faults, and replacement is the more sensible spend. A $200 filter and fan repair on a 4-year-old unit, on the other hand, is an easy yes.
The 50% rule is a starting point, not a hard law. A younger unit can be worth a more expensive repair, and an older unit nearing the end of its life can tip toward replacement even below the 50% mark.
How Hobart’s climate affects your decision
Hobart’s climate is mild, but it’s warming. The Australian Government projects that the number of hot days above 30°C in Hobart will roughly double in the coming decades as part of Hobart’s warming climate. More homes are relying on reverse-cycle systems for both heating and cooling, which makes efficiency a bigger part of the repair-or-replace question than it used to be.
Efficiency matters because heating and cooling can account for up to 40% of a home’s energy use, according to the energy rating label program. Modern reverse-cycle units are also energy-efficient heating and cooling appliances by design, running at 300% to 600% efficiency because they move heat rather than generate it. An old, tired unit simply can’t match that. If your current system is more than a decade old and your bills keep climbing, a higher star-rated replacement can recover some of its cost through lower running costs over its lifetime.
Quick decision guide for Hobart homeowners
Use this table as a fast reference for the most common situations.
| Your situation | Likely best move | Why |
| Unit under 10 years, minor fault | Repair | Low cost and the system is still efficient |
| Unit under 10 years, major fault | Apply the 50% rule | Repair if it’s under half the cost of a new unit |
| Unit 12+ years, any failure | Replace | Near end of life, more faults likely ahead |
| Repair quote over $1,000 on an old unit | Usually replace | A new unit is often more economical |
| Power bills climbing without more use | Consider replacing | The unit is losing efficiency |
Frequently asked questions
How long do air conditioners last in Tasmania?
Most split-system air conditioners last around 10 to 15 years. After about 12 years, internal parts start to wear out and breakdowns become more frequent, which is when replacement usually becomes the better value.
Is it worth repairing a 10-year-old air conditioner?
It depends on the repair cost. A minor repair on a 10-year-old unit that still runs well is often worth it. If the repair is more than half the price of a new system, replacement is usually the smarter choice.
How much does it cost to recharge AC refrigerant in Australia?
A refrigerant top-up typically costs between $160 and $400. If the system is low because of a leak, fixing the leak itself can range from around $225 to $1,600 depending on where it is and how serious it is.
Does a new air conditioner really lower my power bills?
A newer, higher star-rated reverse-cycle unit uses less electricity than an old one to deliver the same heating and cooling. If your existing unit is more than a decade old, a modern replacement can noticeably cut running costs over time.
Should I repair or replace a ducted system?
Ducted systems cost more to replace than split systems, so a repair is often worthwhile if the unit is under 10 years old. Once a ducted system is older and faults are recurring, the repair-or-replace maths usually starts to favour replacement, so it’s worth getting a full assessment.
The bottom line
Repairing your AC is almost always cheaper today. Replacing it can be cheaper over the years if the unit is old, inefficient, or failing again and again. The fastest way to know which side you fall on is an honest, fixed-price assessment of the fault against the cost of a new unit.
That’s exactly what we do. If your air conditioner has stopped working or you’re weighing up whether it’s worth keeping, call QuickAir on 1300 730 896 to check availability in your area and book a fixed-price diagnosis. We’ll tell you honestly whether a repair or a replacement is the better value for your home, with no pressure either way.