Aircon repair cost: diagnostic fees, parts and what to expect on the quote

Repair prices are harder to pin down than servicing prices because nobody knows the fault until a technician opens the unit. What you can control is how the quote is structured. This guide covers the charges that normally appear, what reviewers in Yishun report paying, and how to avoid surprises.

The amounts below are drawn from contractor websites and reviewer comments in the listings we scanned. They are indicative only.

The usual parts of a repair bill

Charge	What it covers	Amounts mentioned in the corpus
Inspection or diagnostic fee	Callout and finding the fault	About $50 to $120, sometimes waived if you proceed
Gas top-up	Refrigerant added to a low system	About $80 to $120 quoted by one reviewer
Small parts	Remote sensor, capacitor, fan motor parts	One reviewer was quoted $180 for a remote sensor
Follow-up visit	A return check after a repair	One reviewer mentioned $80
Major parts	Compressor, control board	Quoted case by case, usually the largest line

Labour is typically folded into the part price or the visit fee, so ask whether the figure you are given is all-in.

Diagnostic fees: fair or not

Charging for a diagnosis is normal, since the technician is spending time and travel. What matters is clarity. Good practice is to state the fee when you book, say whether it is deducted from the repair, and tell you the fault before touching anything.

Friction in reviews tends to come from the opposite pattern: a fee that was not mentioned at booking, or a deep clean suggested before any real troubleshooting. If a technician proposes a chemical wash as the first answer to a unit that is not cooling, it is fair to ask what the diagnosis was.

What drives a repair quote up

• Parts availability. Common parts for popular brands are quick and cheaper. Older models or less common brands can need a longer wait.
• Refrigerant type. Older units may use a refrigerant that is being phased out, which can affect cost and availability.
• Accessibility. High-mounted indoor units or hard-to-reach condensers take longer.
• Recurring faults. A problem that keeps coming back usually costs more than a single clean fix because the root cause has not been found.
• Warranty status. A unit still under manufacturer or installer warranty may have the repair covered. Check this before paying. A few reviewers report warranty claims being slow to get checked, so keep your installation paperwork.

Asking for a clear quote

Before you say yes, get these points:

1. The diagnosed fault, in plain words.
2. The part, and whether it is new, genuine or compatible.
3. The total price including labour and GST.
4. A warranty period on the repair itself.
5. What happens if the fix does not work.

Reviewers who rate contractors highly often mention clear explanations of the work and no pressure to upsell. Those two things are free for the contractor to provide, so ask for them.

Keeping the paperwork

Save the quote message, the invoice and any photos of the faulty part. If the same fault returns, that record shows what was done and when, and it helps if you need to claim on a repair warranty. Ask the technician to note the part replaced and its brand on the invoice.

If you are not sure a part really failed, you can ask to keep the old part. Reasonable technicians do not mind showing it.

When to compare quotes

For anything beyond a small part, a second opinion is sensible, even if it costs another inspection fee. You can browse aircon repair contractors in Yishun and see how they are rated. Our scoring method explains how those ratings are produced from public reviews, and the directory home page lists every category.

If the quote involves a major part on an older unit, put the repair cost next to the cost of a new system before deciding. Do not assume either route is cheaper until you have both numbers.