# Aircon Gas Top Up Ang Mo Kio | R22, R410A, R32 From S$80

> Aircon gas top-up in Ang Mo Kio from S$80 for R22, R410A and R32 systems, with leak check and pressure test. Fixed quote, no callout fee.

URL: https://airconservicingangmokio.com/aircon-gas-top-up/

Ang Mo Kio · Cool Earth Aircon

# Aircon Gas Top-Up in Ang Mo Kio With Leak Check Included

Last updated: 11 November 2026

Top-up for R22, R410A and R32 systems from S$80. Every visit includes a leak check and pressure test, so you know if the leak needs fixing first.

-   R22, R410A and R32 refrigerant
-   Leak check at joints and pipes
-   Pressure test with manifold gauges
-   Advice on leak repair vs top-up

WhatsApp for a Fixed Quote

[https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20gas%20top-up%20in%20Ang%20Mo%20Kio. →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20gas%20top-up%20in%20Ang%20Mo%20Kio.)

 

+65 9427 3833

[tel:+6594273833 →](tel:+6594273833)

![Technician connecting a manifold gauge to an outdoor condenser unit on an HDB aircon ledge in Ang Mo Kio](/images/misc/technician-connecting-manifold-gauge-hoses-to-outd.webp)

Gas Top-Up

From S$80

per system

**4.0/5** 66 Google reviews (Cool Earth Aircon)

**Same-day slots** usual arrival within 90 min, subject to availability

**4,560+** units serviced since 2007

**90-day** workmanship warranty

## What is an aircon gas top-up?

Is your aircon running all day while the room still feels warm? Low refrigerant is a common cause, and an aircon gas top-up is usually what people ask for first.

Aircon Servicing Ang Mo Kio is the Ang Mo Kio service of Cool Earth Aircon, which Brian started in 2007 as a one-man workshop. Gas questions come up in HDB flats all the time, so here’s the plain version.

Your aircon cools by moving refrigerant, often called gas, between the indoor unit and the outdoor condenser unit. When there isn’t enough, the room takes longer to cool and the air feels weak. The compressor also works harder for less.

A gas top-up adds refrigerant back to the right operating pressure.

Here’s the part many people aren’t told. An aircon is a sealed system, so it doesn’t use up gas the way a car uses petrol.

> If the gas level is low, there’s a leak somewhere, even a very small one.

A top-up alone only buys time. That’s why every top-up we do includes a leak check and a pressure test.

![Technician reading manifold gauge pressures at an outdoor condenser unit on an HDB aircon ledge](/images/content/technician-kneeling-on-hdb-aircon-ledge-reading-ma.webp)

## Which refrigerant types do we handle?

We top up R22, R410A and R32 systems. R22 is found on many older non-inverter units, including some still running in older Ang Mo Kio flats. R410A and R32 are used in newer inverter units and multi-split systems.

The technician reads the label on the outdoor unit first. Each gas runs at a different pressure, and they must never be mixed. Engineering guides such as the one from Aircon Spares say the same about R32 and R410A: even though both turn up in newer units, they can’t share a system.

| Refrigerant | Where you’ll usually find it | Global warming potential | Typical starting price per top-up |
| --- | --- | --- | --- |
| R22 | Older non-inverter units | 1,810 | From S$150 |
| R410A | Newer inverter and multi-split units | 2,088 | From S$120 |
| R32 | Newer inverter units | 675 | From S$80 |

The prices are indicative starting figures from FixMove’s 2026 Singapore guide. The global warming figures come from AC Direct and aircons.sg. Your final amount depends on how much gas the unit needs once the leak check is done.

## How does the technician check for a leak?

The technician connects a manifold gauge to the service valve on the outdoor unit. The gauge reads the pressure on the suction line while the system runs.

Then the likely leak points get checked:

-   Each flare joint where the copper piping connects to the units
-   The valves
-   Any exposed or damaged pipe on the aircon ledge

Oily marks at a joint are a common clue. According to Singapore servicing firm SACES, refrigerant carries compressor oil out through the leak, and that oil leaves a residue on the metal around it.

For a leak that is hard to find, a nitrogen pressure test may be suggested and quoted before any work. The test uses dry nitrogen instead of refrigerant. SJR Aircon puts a standard home test at 30 to 60 minutes per system.

## When should you book a gas top-up?

Book a check when any of these show up:

-   Cooling has dropped slowly over weeks or months
-   You see ice on the copper pipe
-   The compressor seems to run and run without cutting off

Here’s a handy rule of thumb from Billy Aircon. A healthy unit blows air roughly 10 to 12 degrees cooler than the room. If yours falls well short after a filter wash, low gas is a suspect.

These signs can also come from a dirty coil or a blocked filter, so the pressure reading tells us which one it is. If the pressure is fine, we’ll say so. You’ll get pointed to 

general aircon servicing

[/ →](/)

 or a 

chemical wash

[/chemical-wash/ →](/chemical-wash/)

 instead of being sold gas you don’t need.

## Common Problems We Solve

### Slow loss of cooling over months

The unit still runs, but each month the room takes a little longer to cool. This slow fade is typical of a small leak. Snowflake Aircon notes that leaks rarely happen all at once, and most start at joints, flare connections or corroded spots on the copper piping.

The pressure test confirms it, and the leak check shows where the gas is going.

### Ice on the copper pipe

Frost or ice on the copper pipe or coil often points to low refrigerant pressure, though a very dirty coil can cause it too. Billy Aircon points out that Singapore’s average humidity of around 84% meets the freezing copper and turns to ice, which is why this sign is so common here.

Running the unit with ice on it puts extra load on the compressor. Do this instead:

1.  Switch the unit off.
2.  Take a photo of the ice and the outdoor unit label.
3.  Book a check.

Our 

not cold repair

[/aircon-not-cold-repair/ →](/aircon-not-cold-repair/)

 page covers the other causes of warm air.

### Hissing sound and oily marks at joints

Gas is usually escaping at a joint if you notice either of these:

-   A faint hiss near the pipes
-   An oily stain at a flare joint

Tightening or redoing the joint is often a small job, quoted before work.

### Top up gas or fix the leak first?

The right answer depends on the leak and the age of the unit:

-   **Slow leak, older unit:** a top-up may keep it cooling for a while, and we’ll say that plainly.
-   **Leak at one joint or one damaged pipe:** fixing it first usually saves money, because you only pay for the gas once.

You get both options and both prices, then you choose.

If your unit still runs on R22, weigh up supply too. FixMove, citing NEA, says Singapore will completely phase out HCFC consumption by 1 January 2030, with annual quota reductions from 2026. R22 gas is likely to get harder to source, so think twice before putting a lot of money into an old unit.

Bigger faults go to our 

aircon repair

[/repair/ →](/repair/)

 team, and replacement enquiries are handled by Cool Earth Aircon at 

coolearth.com.sg

[https://www.coolearth.com.sg →](https://www.coolearth.com.sg)

.

## Why not just keep topping up?

Running an aircon low on gas is hard on it. Here’s what happens:

-   The compressor runs longer to reach the set temperature.
-   The electricity bill creeps up.
-   The coil can ice over and stop cooling altogether.

Each top-up also costs money, and older gas isn’t cheap. The aircons.sg cost guide puts R22 wholesale at roughly S$25 to S$50 per kg, against S$8 to S$12 per kg for R32.

A slow leak that needs gas every few months soon costs more than fixing it once. That’s why the leak check is part of every visit, not an add-on.

## Booking a gas top-up in Ang Mo Kio

Ready to book an aircon gas top-up? WhatsApp us these details:

-   The number of units
-   The symptoms
-   Your address
-   Photos of the outdoor unit label and any ice on the pipes

The photos help the technician bring the right refrigerant.

Technicians travel from Simei by the CTE and usually reach Ang Mo Kio within 90 minutes of a confirmed booking, with same-day slots subject to availability.

See the full 

price list

[/pricing/ →](/pricing/)

 for every service, or 

contact us

[/contact/ →](/contact/)

 to book.

Pricing

## How much does gas top-up cost in Ang Mo Kio?

Leak repair, if needed, is quoted before work.

Aircon Gas Top-Up

From S$80

per system

Ask for your fixed quote

[https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20gas%20top-up%20in%20Ang%20Mo%20Kio. →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20gas%20top-up%20in%20Ang%20Mo%20Kio.)

Fixed quote before work · No callout fee · Pay after the job · 90-day workmanship warranty. 

See the full price list

[/pricing/ →](/pricing/)

Why choose us

## Why choose Aircon Servicing Ang Mo Kio for gas top-up?

### Leak check every time

Low gas means a leak somewhere. We check before we top up, so you are not paying for gas that escapes again in a few weeks.

### All three gas types

R22 on older non-inverter units, R410A and R32 on newer inverter systems. The technician confirms the type from the unit label first.

### Price told first

Top-up from S$80. Any leak repair is quoted separately before work, and there is no callout fee.

### 90-day warranty

If the same fault comes back within 90 days, the team returns and fixes it at no extra charge.

### Evening and Sunday slots

Open 9 AM to 9 PM Monday to Saturday and 9 AM to 8 PM on Sunday, with same-day slots subject to availability.

Process

## How does our gas top-up work?

1.  1
    
    ### Tell us the symptoms
    
    WhatsApp the number of units, how long cooling has been weak, and your Ang Mo Kio address. Photos of ice on the pipes help.
    
2.  2
    
    ### Pressure check
    
    The technician connects manifold gauges at the outdoor unit and reads the operating pressure against the refrigerant type.
    
3.  3
    
    ### Leak check
    
    Flare joints, valves and exposed copper piping are checked. You are told whether a leak needs fixing before any gas goes in.
    
4.  4
    
    ### Top-up and test
    
    Once you agree the quote, refrigerant is added to the correct pressure and the unit is tested for cold air at the vent.
    
5.  5
    
    ### Pay after the job
    
    You pay when the work is done, and the 90-day workmanship warranty starts.
    

Our work

## Gas Top-Up jobs in Ang Mo Kio

Tap a photo to see it larger.

 

Reviews

## What customers say

Cool Earth Aircon holds a 4.0 Google rating from 66 reviews.

4.0/5on Google

> "Three units in our Teck Ghee flat, done in one evening after work. The price on WhatsApp was the price I paid."

MMei Ling T.Teck Ghee

> "The bedroom unit smelled sour for months. After the overhaul the smell is gone and it cools properly again. He showed me the sludge in the drain pan."

RRavi K.Cheng San

> "Water was dripping onto the bed. They came the same afternoon, cleared the drain line and tested it before leaving."

JJason L.Kebun Bahru

FAQ

## Gas Top-Up FAQs

### How much does an aircon gas top-up cost in Ang Mo Kio?

A gas top-up starts from S$80 per system. That price includes a leak check at the flare joints and pipes, and a pressure test with manifold gauges, so you know what is actually wrong before gas goes in. If the technician finds a leak that needs fixing first, the repair is quoted separately before any work starts, and you decide whether to go ahead. There is no callout fee for Ang Mo Kio, and you pay after the job. The final price depends on the refrigerant type, how much gas the system needs and whether it is a single split or a multi-split setup. All work carries a 90-day workmanship warranty. Full prices for every service are on the price list page.

### Should I top up gas or fix the leak first?

An aircon is a sealed system, so it should not run low on refrigerant unless there is a leak. Topping up without finding the leak only buys time, because the new gas escapes through the same gap. That is why every top-up includes a leak check. If the leak is small and slow, a top-up may keep the unit cooling for a while, and the technician will tell you that honestly. If the leak is at a loose flare joint or a damaged pipe, fixing it first is usually the better spend, because you avoid paying for gas twice. You get both options and prices before any work, and the choice is yours.

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

Common signs are a slow loss of cooling over weeks or months, ice or frost on the copper pipe or coil, a hissing sound near the pipes, oily marks at pipe joints, and a compressor that runs without stopping. Some of these signs also come from a dirty coil or a blocked filter, which is why the technician reads the pressure before adding anything. If the pressure is normal, a top-up will not help, and servicing or a chemical wash may be the real fix. If the room is warm and you are not sure of the cause, the not cold repair page explains the other common faults. A quick WhatsApp with photos of the unit and pipes helps us prepare.

### Which refrigerant does my aircon use?

Check the label on the outdoor condenser unit. Older non-inverter units often use R22, while newer inverter systems use R410A or R32. The technician confirms it on site before adding anything.

### Is a gas top-up included in general servicing?

No. General servicing includes a refrigerant pressure check, which tells you whether gas is low. A top-up from S$80 is quoted separately if the pressure reading shows it is needed.

### How long does a gas top-up take?

Most top-ups on a single system take under an hour, including the leak check and testing. Multi-split systems or a leak that needs tracing can take longer. The technician tells you on arrival.

### Can you top up gas on a multi-split system?

Yes. Multi-split System 2, 3 and 4 setups share one outdoor unit, so the pressure is checked at that unit. If only one room is not cold, the cause may be a fan or valve fault rather than gas, and that is checked too.

### Do you work on all brands?

Yes. Technicians work on all common brands, including Daikin, Mitsubishi Electric, Panasonic, LG, Fujitsu, Samsung, Toshiba, Hitachi, Sharp and Carrier, both inverter and non-inverter.

### What if cooling drops again after the top-up?

All work carries a 90-day workmanship warranty. If the same fault comes back within 90 days, the team returns and fixes it at no extra charge.

Related guides

## Read before you book

![Close view of a dusty aircon filter pulled from a wall-mounted unit in an HDB bedroom](/images/featured/close-view-of-a-dusty-aircon-filter-pulled-from-a-.webp)

Guide · 4 min read

### Signs Your Aircon Needs Servicing

Weak airflow, dusty filters, slow cooling or a light musty smell? The signs your aircon is due for servicing, and when it needs more than that.

Read guide

[Signs Your Aircon Needs Servicing →](/guide/signs-your-aircon-needs-servicing/)

![Technician flushing an aircon drain line with a small pump in an HDB bedroom](/images/featured/technician-flushing-an-aircon-drain-line-with-a-sm.webp)

Decision guide · 5 min read

### What Happens During General Aircon Servicing: The 8-Point Checklist

Filter clean, coil clean, drain flush, pressure check and more. See exactly what general aircon servicing covers so you can compare quotes.

Read guide

[What Happens During General Aircon Servicing: The 8-Point Checklist →](/guide/what-happens-during-aircon-servicing/)

Related services

## You might also need

![Homeowner in a warm room under an aircon that is not cooling](/images/cards/homeowner-fanning-herself-under-wall-mounted-airco.webp)

### Aircon Not Cold Repair

Finds and fixes the cause of weak or warm air: dirty coils, low refrigerant, a failed part or an outdoor unit that is not running.

From S$60 Details

[Aircon Not Cold Repair →](/aircon-not-cold-repair/)

![Technician checking an outdoor condenser unit on an HDB aircon ledge](/images/cards/technician-kneeling-beside-outdoor-condenser-unit-.webp)

### Aircon Repair

Diagnosis and repair of aircon faults, including same-day emergency visits. All common brands, inverter and non-inverter.

From S$60 Details

[Aircon Repair →](/repair/)

Same-day slots, subject to availability

## Ready to book gas top-up?

Send the number of units and your Ang Mo Kio address. You get a fixed price for aircon gas top-up before any work starts.

Direct WhatsApp +65 9427 3833

[https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Ang%20Mo%20Kio. →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Ang%20Mo%20Kio.)

 

Call us +65 9427 3833 · Office +65 6810 6706

[tel:+6594273833 →](tel:+6594273833)

Open 7 days Mon to Sat 9 AM to 9 PM · Sun 9 AM to 8 PM

### Quick quote request