Aircon gas top-up Singapore. Diagnosis first, no surprises.
Honest aircon gas top-up Singapore service for R22, R32, and R410A systems. We don't quote a flat price online because every job is different. We troubleshoot first ($80, waived if topping up), then quote you the actual amount based on gas type and how much your system needs. Multi-split typical: $80 to $200.
Your aircon is a closed loop. Refrigerant doesn’t run out.
An aircon system doesn’t burn refrigerant the way a vehicle burns fuel. It is a completely sealed circuit. Gas circulates, cools your room, and cycles back continuously. If your refrigerant gas level is low, you have a leak. It might be a micro-leak that takes two years to impact performance, or a larger fault that requires topping up every few months.
Why Most Companies Hide This
It is easier to repeatedly bill for a recurring $150 top-up every year than to spend the effort diagnosing the actual leak source. At Aircon Servicing & Repair Singapore, we explain both options upfront with complete transparency so you stay in total control of your budget.
That is why every gas top-up job with our team starts with an honest $80 troubleshooting diagnosis (fully waived if you proceed with the top-up). We confirm whether it is genuinely a gas pressure issue rather than a clogged coil or faulty sensor, determine leak severity, and guide you through your choices: top up first, or conduct a precision nitrogen pressure test to find and weld-seal the leak permanently.
How do you know if it’s actually low gas?
These are the most common signs of refrigerant loss, but they can also be caused by dirty blower wheels or sensor faults—which is why we troubleshoot first instead of guessing.
Aircon runs but doesn’t cool
Compressor is active and the fan is blowing, but the air feels lukewarm. A classic low gas pressure indicator, though clogged filters can mimic this.
Ice on the copper pipes
Frost or ice accumulation on the copper pipes outside the unit or along the indoor coil is a clear physical indicator of low refrigerant pressure.
Takes forever to cool
If cooling used to take 10 minutes but now takes over an hour, the system is struggling because insufficient gas is circulating to absorb indoor heat.
Compressor short-cycles
The outdoor unit turns on and off rapidly instead of running steadily. Low refrigerant triggers built-in thermal safety switches to protect the compressor.
Water dripping & overflows
Severe ice buildup on the evaporator coil eventually thaws into large surges of water, overwhelming drain pans and causing unexpected indoor leaks.
Higher electricity bills
Low-gas systems run non-stop at maximum capacity trying to reach the set temperature, consuming significantly more energy while providing weaker cooling.
If gas is low, here’s how we proceed
We always present both options with complete honesty. Most older systems simply need a reliable top-up, while persistent leaks require proper diagnostics.
Top Up the Gas
$80 to $200 typical
We connect precision manifold gauges to your system, verify the refrigerant type, weigh in the correct amount of gas according to manufacturer specs, and test-run the unit to confirm cooling is fully restored.
- ✓ Fast 30 to 45 minute service window
- ✓ Immediate, same-day cooling restoration
- ✓ Initial $80 troubleshooting fee is completely waived
- ✓ Clear guidance on whether future top-ups may be expected
Pressure Test & Find the Leak
From $190
We dismantle the indoor/outdoor units, isolate component lines, pump in tracer gas (such as hydrogen) up to ~350 psi, and return after 2 to 3 days to inspect pressure retention, isolating the exact leak location.
- ✓ Thorough two-visit diagnostic process (3 days apart)
- ✓ Pinpoints the exact source of refrigerant leakage
- ✓ Permanent repair solution instead of recurring top-up costs
- ✓ Transparent, separate quotation provided for the actual repair work
We diagnose first
Most "no cooling" complaints aren't actually gas. We check before charging you for refrigerant you don't need.
NR22 still handled
Even though phased out globally, we still source R22 for older HDB and condo units. No need to replace the whole system.
Real pressure tests
Other companies do a one-shot test and call it done. We pressurise and return 2 to 3 days later, that's how you actually catch slow leaks.
BizSafe 3 and GST-registered
Real company with insurance, refrigerant handling certifications, and proper invoicing. Not a freelancer with a cylinder.
How a gas top-up job actually works
No assumptions, no surprise bills. Here’s exactly what happens from your initial inquiry to a fully restored, cool room.
You WhatsApp or call us
Tell us what’s happening: “aircon not cooling,” “ice on the copper pipes,” or whatever you are experiencing. We will give you a preliminary assessment of potential causes.
Schedule a troubleshooting visit ($80)
Most customers don’t know the exact root cause—they just know cooling has dropped. Our technician visits your premises to identify the exact issue.
We diagnose on-site
We inspect filters, fan coils, electrical connections, drainage lines, and refrigerant operating pressure. Often, the issue stems from a dirty coil rather than low gas.
We tell you what we found
If it’s a dirty coil, we recommend a wash. If it’s an electrical fault, we explain the fix. If refrigerant gas is genuinely low, we proceed directly to step 5 with zero hidden upsells.
If gas is low, your two options
We present your two choices clearly: (a) Top up the gas and monitor how long it holds, or (b) Conduct a pressure test to locate the leak. You decide with complete freedom.
Top up (if you choose option 1)
We connect manifold gauges, identify your refrigerant type (R22 / R32 / R410A), weigh in the correct amount, and test-run the unit. The initial $80 troubleshooting fee is fully waived.
Or pressure test (if you choose option 2)
We dismantle indoor/outdoor units, attach test gauges to each component, and pump in tracer gas up to ~350 psi. We leave the system pressurized and secure.
Return 2 to 3 days later
We re-check all components. Any drop in pressure isolates the exact leak source. We then provide a transparent quotation for the permanent repair separately from the test fee.
What you’ll pay, depending on what you need
Honest pricing for residential multi-split systems. VRV/VRF commercial setups are quoted separately due to specialized refrigerant volume requirements.
Troubleshooting Visit
$80
On-site diagnosis to confirm the root cause of cooling loss. Most “no cooling” issues stem from clogged coils or sensors rather than gas leaks.
- Full system check & inspection
- Refrigerant pressure reading
- Honest technical verdict
- No-pressure repair quote
Gas Top-Up
$80 to $200
For residential System 1 to 5 setups. Final pricing depends on refrigerant type (R22, R32, or R410A) and the exact volume required.
- R22, R32, and R410A all handled
- Efficient 30 to 45 minute service window
- Same-day cooling restoration
- Clear on-site quote with zero surprises
Pressure Test
From $190
Thorough two-visit diagnostic process. Units are dismantled, pressurized to 350 psi with tracer gas, and re-inspected 2 to 3 days later.
| System 1 | $190 |
| System 2 | $250 |
| System 3 | $310 |
| System 4 | $370 |
| System 5 | $430 |
Got a VRV/VRF system?
Commercial and large landed VRV/VRF systems use vastly different refrigerant volumes—often full tanks rather than partial residential top-ups. Commercial pricing is structured completely separately. WhatsApp our team with your system details and specifications for an accurate quote.
Honest gas work, no upselling
Real feedback from residential gas top-up and pressure test customers across Singapore.
“Aircon was not cooling, they came down, diagnosed it on the spot, and turned out it was just a dirty coil. Did the servicing instead of charging me for gas I didn’t need. Honest people.”
Ng Yoke Leng
January 2026
“Finally an honest aircon company that does not overcharge. My 7-year-old AC is good as new again. Highly recommended.”
Ken Lim
December 2024
“Topped up the gas and explained clearly that I might need a pressure test next year if it goes again. No hard-sell, just honest info. Aircon working perfectly now.”
Farah Nurliyana
October 2025
“Excellent ethical company. Very confident in their work and did an excellent job. Signed a year contract with them after the first visit.”
J S C 8080
January 2026
“Pressure test found a leak in the system that previous companies kept missing. Fixed it properly instead of just refilling. Saved me from another top-up next year.”
Loh MuiHeng
January 2025
“Hands down one of the best aircon companies I’ve engaged. Smooth process and very trustworthy.”
Charlotte Chan
February 2026
Aircon gas top-up FAQ
Quick answers to what most Singapore homeowners ask before booking.
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