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 ($60, 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.
The Truth Most Won't Tell You
Your aircon is a closed loop. Refrigerant doesn't run out.
An aircon system doesn't burn refrigerant the way a car burns petrol. It's a sealed loop. Gas circulates, cools your room, and cycles back. If your gas is low, you have a leak. It might be a tiny one that takes two years to matter, or a bigger one that'll need topping up every few months.
That's why every gas top-up job at Lion City Aircon starts with a $60 troubleshooting visit. We confirm it's actually a gas issue (not a dirty coil or faulty thermostat), figure out roughly how big the leak is, then walk you through your two options: top up and see, or pressure test and find the leak.
Signs Your Aircon Might Need Gas
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 other issues, which is why we troubleshoot first instead of guessing.
Aircon runs but doesn't cool
Compressor is on, fan is blowing, but the air feels lukewarm. Classic gas pressure issue, but not always.
Ice on the copper pipes
Frost or ice forming on the pipes outside the unit is a strong indicator of low refrigerant pressure.
Takes forever to cool
Used to cool the room in 10 minutes, now takes an hour. Unit is struggling because there's not enough gas to do the job.
Compressor short-cycles
Outdoor unit clicks on and off rapidly instead of running steadily. Often caused by low refrigerant tripping safety sensors.
Water dripping (sometimes)
Severe ice buildup inside the fan coil eventually melts and leaks water. Sign of a long-standing gas issue.
Higher electricity bills
Low-gas units run continuously trying to reach the set temperature. You're paying more to cool less.
Don't assume it's gas, sometimes it's just a dirty coil. WhatsApp us describing the symptoms and we'll tell you what's most likely causing it.
Your Two Options
If gas is low, here's how we proceed
We always present both options honestly. Most older systems just need a top-up. Some need a real fix.
Top up the gas
We connect manifold gauges to your system, identify the gas type, weigh in the correct amount of refrigerant, and run the unit to confirm cooling has been restored.
- 30 to 45 minutes per visit
- Cooling restored same day
- $60 troubleshooting fee waived
- You'll know if you need to top up again next year
Pressure test & find the leak
We dismantle the units, set up pressure gauges on every component, pump in H2 (hydrogen) to ~350 psi, then return 2 to 3 days later to check if any unit has dropped pressure. That tells us exactly where the leak is.
- Two-visit process (3 days apart)
- Pinpoints the exact leak location
- Permanent fix instead of repeat top-ups
- Quote for actual repair separate from test
The Lion City Process
How a gas top-up job actually works
No assumptions, no surprise bills. Here's exactly what happens from your first call to a cool aircon.
You WhatsApp or call us
Tell us what's happening: "aircon not cooling," "ice on the pipes," whatever you're seeing. We'll give you a rough sense of what it could be.
Schedule a troubleshooting visit ($60)
Most customers don't actually know what's wrong, they just know it's not cooling. We come down to find out for sure.
We diagnose on-site
Check the filter, fan coil, electrical, drainage and refrigerant pressure. Nine times out of ten the problem isn't where customers think it is.
We tell you what we found
If it's a dirty coil, we say so. If it's an electrical fault, we say so. If gas is low, we move to step 5. No hidden findings, no upsell scripts.
If gas is low, your two options
(a) Top up and see how long it lasts, or (b) Pressure test to find the leak. We explain both and let you decide. No pressure either way.
Top up (if you choose it)
Connect manifold gauges, identify your gas type (R22 / R32 / R410A), weigh in the correct amount, run the unit to verify cooling. $60 fee waived.
Or pressure test (if you choose it)
Dismantle the units, set up gauges on each item, pump in H2 to ~350 psi. We leave the system pressurised and head out.
Return 2 to 3 days later
Re-check every component. If anything dropped in pressure, that's the leak source. We then quote the actual repair separately from the test fee.
Transparent Pricing
What you'll pay, depending on what you need
Honest pricing for residential multi-split systems. VRV/VRF is quoted separately because the gas volumes are completely different.
Troubleshooting Visit
On-site diagnosis to confirm the actual problem. Most "no cooling" issues aren't gas.
- Full system check
- Pressure reading
- Honest verdict
- No-pressure quote
Gas Top-Up
For System 1 to 5 residential units. Final price depends on gas type (R22 / R32 / R410A) and amount needed.
- R22, R32 and R410A all handled
- 30 to 45 minutes per visit
- Cooling restored same day
- Final quote on-site, no surprises
Pressure Test
Two-visit process. Dismantle, pressurise to 350 psi, return 2 to 3 days later to check.
| 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 gas volumes, often full tanks rather than partial top-ups. Pricing is completely separate from residential. WhatsApp us with your system details and we'll quote properly.
Island-Wide Coverage
Gas top-ups all over Singapore
HDB, condo, landed, commercial. We carry R22, R32 and R410A on every truck. Same-day available in most areas.
Real Customers, Real Reviews
Honest gas work, no upselling
Verified Google reviews from gas top-up and pressure test customers.
"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."
"Finally an honest aircon company that does not overcharge. My 7-year-old AC is good as new again. Highly recommended."
"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."
"Excellent ethical company. Very confident in their work and did an excellent job. Signed a year contract with them after the first visit."
"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."
"Hands down one of the best aircon companies I've engaged. Smooth process and very trustworthy."
Common Questions
Aircon gas top-up FAQ
Quick answers to what most Singapore homeowners ask before booking.
How much does an aircon gas top-up cost in Singapore?
Why don't you give a flat price for gas top-up?
Why does my aircon need a gas top-up at all?
What's a pressure test and when do I need one?
Do you handle R22, R32 and R410A?
How do I know if my aircon needs a gas top-up?
How does the troubleshooting fee work?
How long does a gas top-up take?
Will my aircon need topping up again next year?
Do you do gas top-ups for VRV/VRF systems?
Which areas in Singapore do you cover?
Aircon not cooling? Let's find out why.
WhatsApp us with what you're seeing, or fill in the quick form below. We'll come down for a $60 troubleshooting visit and tell you honestly what's going on.