How much does an aircon gas top-up cost in Singapore?

Cost depends on the refrigerant type (R32, R410A, R22), the amount needed, and any repair work on the leak source. We confirm the cost after the pressure check — not before we know what the unit actually needs.

How long does a gas top-up last?

If the leak is sealed, a top-up can last the life of the system. If the leak is still active, the refrigerant will continue to escape. The longevity depends entirely on whether the leak source is addressed.

Can I just top up without fixing the leak?

You can, but it is a temporary measure. The refrigerant will continue to escape at the same rate. Depending on the leak severity, you may need another top-up within months. We lay out the trade-off so you can decide.

Will the compressor be damaged from low refrigerant?

Running on significantly low refrigerant causes the compressor to run hot and under stress. Prolonged operation in this state shortens compressor life. This is why we check and address it rather than leaving it.

How do I know if my aircon is low on gas?

The clearest signs are the unit blowing only slightly cool air despite running, ice forming on the pipe near the outdoor unit, or cooling that was fine previously but has gradually worsened. These are worth checking — but they can also have other causes.

Is R22 gas still available?

R22 is being phased out globally. It is still available for servicing existing units but at higher cost and with restricted supply. If your unit runs on R22, it is worth knowing the replacement picture for the long term.

Aircon Gas Top-up in Singapore

Low refrigerant is a symptom, not the problem — the gas went somewhere. We locate the leak source before topping up, because refilling without fixing the leak just resets the clock.

How we handle gas top-up jobs

Pressure check before topping up
We confirm the unit is actually low on refrigerant before adding anything. Some complaints that look like gas loss turn out to be electrical or airflow faults.
We find the leak first
We check for the leak source before topping up. If the source is accessible and fixable on the visit, we repair it. If it is not, we tell you what that means for the top-up's longevity.
We flag when top-ups stop making sense
If this is not the first top-up, we tell you plainly when the ongoing cost of topping up is no longer the sensible approach versus repairing or replacing.

Signs the unit may be low on refrigerant

These symptoms suggest the unit is running low on refrigerant. They can also overlap with other faults, so we confirm via pressure check before concluding it is a gas issue.

Unit still running but room stays warm even after a long time
Ice forming on the refrigerant pipe or indoor coil
Indoor unit blowing air that is only slightly cool, not cold
Hissing or bubbling sound from the unit
Unit recently repaired or reinstalled and not cooling properly
Same problem returned after a previous gas top-up

What a gas top-up visit involves

We do not top up blindly. The process starts with a pressure check and leak assessment before any refrigerant is added.

1. Pressure check and confirmation
We connect gauges to the refrigerant circuit and read the operating pressures. This confirms whether the unit is actually low on refrigerant or whether the complaint has a different cause.
2. Leak detection
If pressure is low, we check for the leak source. Common locations are flare connections, service valves, evaporator coil joints, and condenser coil sections. We use electronic detectors and soap solution for accessible areas.
3. Repair accessible leaks
If the leak source is accessible and repairable on the same visit — a loose flare, a cracked joint — we repair it before topping up. Topping up without sealing the leak is a short-term fix.
4. Refrigerant top-up
Once the leak is addressed or confirmed not repairable on-site, we top up to the manufacturer's specified operating pressure. We use R32 or R410A depending on the unit.
5. Performance check
We run the unit and confirm suction and discharge pressures are within normal range and that cooling has been restored. We note the amount added and any leak locations found.

Why leak detection comes before top-up

Low refrigerant almost always means the gas went somewhere. A sealed system does not lose refrigerant under normal operation. If the unit needs topping up, it almost certainly has a leak — or the system was improperly charged during installation.

A top-up without sealing the leak will last weeks to months, not years
Repeated top-ups cost more than addressing the leak source once
Running a unit on low refrigerant damages the compressor over time
We check for the leak source before recommending a top-up
If the leak cannot be fixed on-site, we tell you what that means for longevity

Gas top-up pricing

Cost depends on the refrigerant type, amount needed, and whether leak repair is included. We confirm the cost after the pressure check.

On-site diagnostic — $30/visit
Waived if top-up or repair work proceeds
Refrigerant and leak repair quoted after diagnosis

Booking and visit timing

Gas top-up visits are typically booked within one to two days. The visit includes pressure check and leak detection before any refrigerant is added.

Visit typically takes 30 to 60 minutes including leak check
Accessible leak repairs on the same visit add time
If the leak source needs a separate repair, we explain the next step
We prioritise gas-related bookings given the compressor risk

Refrigerant types we work with

The refrigerant type is determined by the unit — you cannot change it without replacing the entire system. We check the nameplate and source the correct refrigerant for the unit.

R32 — most common in newer units (post-2015)
R410A — widely used in older split systems
R22 — found in older legacy units, being phased out
R290 — used in some inverter models
We check the nameplate before sourcing refrigerant — do not mix types
R22 units require careful handling due to regulatory status

What repeated gas loss means

If the unit needs a top-up more than once a year, the leak is likely larger or more accessible than a slow seep from a joint. At some point, the ongoing cost of top-ups exceeds the cost of tracking and repairing the leak properly.

A slow seep from a flare connection may need topping up every 12 to 18 months
A faster leak at a coil joint or service valve needs repair, not repeated top-ups
Compressor damage from prolonged low-charge operation shortens unit life significantly
We advise on when the leak should be repaired rather than topped up

When gas top-up is not the right starting point

If the unit is not cooling but there is no pressure drop, the problem is not refrigerant. These situations need a different diagnostic path.

Unit blowing warm with normal airflow → check electrical and refrigerant fault path
Outdoor unit not running → compressor or electrical fault, not gas
Unit trips the breaker → electrical fault, not a gas issue
Error code showing → read the code before assuming gas
Ice on the coil but no pressure drop → airflow restriction or dirty coil

What customers say

I really appreciate how honest and efficient this company is. They identified the problem quickly and fixed it without unnecessary charges. I would definitely recommend them!

Matthew Lim

Accurate diagnosis for electronic problem, fair price for recond parts instead of expensive new parts, otherwise may just need to replace the whole aircon unit.

hk Tan

Highly professional and efficient service! The technicians arrived on time, performed a thorough cleaning, and fixed my aircon issue. Honest pricing, no hidden charges.

Irwan Abu Samah

Last minute aircon was leaking & the team + management accommodated to drop by to my place on the day itself. Professional service & recommend it.

Sh on

Gas top-up FAQ

Think your aircon needs gas?

Tell us the unit and what it is doing. We will check the pressure and the leak situation before recommending whether a top-up is the right next step.

Ask about gas top-up on WhatsApp

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