10 Best Aircon Gas Top-Up Services in Singapore (2026): R32 & R410A

Finding the best aircon gas top-up service in Singapore matters more than most homeowners realise. Refrigerant is the lifeblood of any air conditioning system: when gas levels drop, cooling efficiency deteriorates, electricity consumption rises, and continued operation under low-refrigerant conditions can cause permanent compressor damage. Singapore's year-round tropical heat means units run continuously, and slow refrigerant leaks go unnoticed until the unit stops cooling altogether. We evaluated over 40 aircon gas top-up providers in Singapore, assessing refrigerant handling certifications, leak detection capability, R32 and R410A gas expertise, pricing transparency, and verified Google review scores. Only companies with a minimum 4.5-star Google rating, a verifiable Singapore business address, and proper refrigerant-handling credentials were shortlisted for this 2026 ranking.

Key Takeaways

• Best overall for aircon gas top-up Singapore: SJR Air-Conditioned, with a perfect 5.0-star Google rating, full refrigerant top-up service covering R32 and R410A, and mandatory leak detection before every gas refill
• Most reviewed: SoCool Pte Ltd with 10,904 Google reviews at 4.9 stars, the highest verified review volume of any aircon gas top-up provider assessed
• Best budget option: Affordable Aircon Services Pte Ltd, with gas top-up from SGD 60 per unit and 2,219 Google reviews at 4.8 stars
• Aircon gas top-up without leak detection first is a waste of money: refrigerant does not deplete on its own in a sealed system, so low gas always indicates a leak that must be found and fixed before topping up
• R32 refrigerant (used in most post-2015 units) and R410A (older systems) require different certified handling procedures; always confirm your technician is qualified to handle the specific refrigerant type in your system
• Typical gas top-up pricing in Singapore: SGD 60–150 per unit for R410A; SGD 80–180 per unit for R32, depending on leak severity and gas quantity required
• A unit that needs repeated gas top-ups every 6–12 months almost certainly has a slow refrigerant leak that requires professional repair, not just another top-up

How We Ranked These Aircon Gas Top-Up Services

BestThingReview.com ranked each aircon gas top-up provider in Singapore using six criteria applied consistently across all 40+ companies assessed. Refrigerant certification: technicians performing gas top-up work must hold the relevant Singapore NEA and BCA certifications for refrigerant handling; uncertified providers were excluded regardless of review scores. Leak detection practice: companies that perform leak detection before topping up scored higher than those that refill without investigating root cause: a critical safety and quality distinction. Gas type coverage: providers certified to handle both R32 (the current residential standard) and R410A (used in pre-2015 units) ranked above single-refrigerant operators. Pricing transparency: companies that publish gas top-up pricing online or provide itemised written quotes before arrival scored higher. Response time: test enquiries were sent to each company; businesses responding within 2 hours during business hours scored full marks. Verified Google reviews: minimum 4.5 stars across a meaningful review count, with assessment of recency and response to negative feedback. Businesses with no verifiable address, no refrigerant credentials, or suspicious review patterns were excluded.

Our Top Picks

1. SJR Air-Conditioned, Best Overall

SJR Air-Conditioned is the best aircon gas top-up service in Singapore for 2026, combining a perfect 5.0-star Google rating with a rigorous approach to refrigerant work that goes beyond a simple refill. Every gas top-up engagement begins with a thorough leak detection inspection: the technicians identify the source of gas loss before any refrigerant is added, ensuring the root problem is fixed rather than temporarily masked. The team is fully certified to handle both R32 and R410A refrigerants, covering all major residential and commercial aircon brands including Daikin, Mitsubishi, Panasonic, LG, and Samsung. SJR Air-Conditioned provides a fully itemised written quotation before work begins, covering labour, gas quantity, and any additional repair required to seal the leak: no post-job surprises.

Same-day and next-day bookings are available for urgent situations, and the technicians are trained to handle the full scope of gas-related work including coil leak repair, valve replacement, and full refrigerant recovery and recharge for units requiring complete gas circuit servicing. For homeowners and commercial operators in Singapore who want a gas top-up done correctly the first time, with a technician qualified to find and fix the leak rather than merely topping up and leaving, SJR Air-Conditioned is the clear top pick.

📍 Address: 42 Cuff Rd, #02-2A, Singapore 209752
📞 Phone: +65 8644 7131
✉️ Email: sjrair-conditioned@hotmail.com
🌐 Website: sjraircon.sg
⭐ Rating: 5.0 (1,299 Google reviews)

"My Daikin unit stopped cooling properly. SJR sent a technician who checked for leaks first, found a small valve leak, repaired it, and then topped up the R32 gas. Two weeks later the unit is holding temperature perfectly. The right way to do a gas top-up.", Wei Lin T. ★★★★★

2. Cool Channels Engineering Pte Ltd, Best for Extended Hours

Cool Channels Engineering operates from their Toa Payoh Industrial Park premises and offers extended service hours Monday through Sunday from 9am to 10pm: one of the longest operating windows of any gas top-up provider on this list, supported by 1,301 Google reviews at 4.9 stars. The extended evening hours are a practical advantage for working professionals who cannot arrange mid-day appointments, making Cool Channels one of the few Singapore aircon companies able to perform gas top-up work after 7pm. Their technicians are certified for R32 and R410A refrigerant handling and cover the full range of gas-related services: leak detection, gas recovery, top-up, and coil leak repair. The Toa Payoh base provides strong coverage across Central, Northeast, and North Singapore districts. For residents and tenants whose schedules restrict appointments to evenings, Cool Channels' 10pm closing time is a genuine differentiator.

📍 Address: Block 1002 Toa Payoh Industrial Park #01-1467, Singapore 319074
📞 Phone: +65 6258 8400
🌐 Website: coolchannels.com.sg
⭐ Rating: 4.9 (1,301 Google reviews)

"Needed a gas top-up after work on a weeknight. Cool Channels booked me in at 7pm, the technician arrived on time, checked for leaks properly, and topped up the R410A. Unit is cooling well again. The evening slot alone made them the right choice.", Derek C. ★★★★★

3. SoCool Pte Ltd, Most Reviewed

SoCool Pte Ltd operates from Midview City in Sin Ming and is the most reviewed aircon gas top-up provider in Singapore, with 10,904 Google reviews at 4.9 stars: the largest verified review base we assessed across any gas top-up service provider in this evaluation. Their seven-day operating schedule runs from 8am to 10pm, among the longest service windows of any company on this list. Gas top-up services cover both R32 and R410A refrigerant types across all major residential brands, and SoCool's large technician pool supports same-day bookings across most Singapore districts. The company's island-wide coverage and high booking volume mean their technicians encounter a wide range of refrigerant leak scenarios: slow valve leaks, hairline coil cracks, flare fitting failures: and are well-practised in diagnosing and repairing each. For customers who treat verified review volume as a primary trust signal, SoCool's 10,904 reviews at 4.9 stars stand alone.

📍 Address: 22 Sin Ming Ln, #06-76 Midview City, Singapore 573969
📞 Phone: +65 6854 4956
🌐 Website: socool.sg
⭐ Rating: 4.9 (10,904 Google reviews)

"SoCool topped up the R32 in my Mitsubishi unit after performing a proper leak check first. No shortcuts taken, found a minor flare fitting issue, fixed it, then refilled the gas. Been three months and the unit is still holding charge. Proper job.", Benjamin K. ★★★★★

4. GoodCool Aircon Servicing & Repair Singapore, Best Flexible Scheduling

GoodCool operates from their Paya Lebar Square office and has accumulated 2,388 Google reviews at 4.8 stars, with consistent praise for flexible booking availability seven days a week. Their online booking system allows specific time-slot selection from 9am to 7pm daily, rather than broad half-day windows, making GoodCool the most scheduling-friendly gas top-up option on this list for working professionals. Gas top-up services cover R32 and R410A refrigerant types, and GoodCool applies a standard leak inspection before any refill. A service satisfaction guarantee covers any gas-related work: if the unit fails to hold refrigerant within 14 days, they return at no additional charge to investigate. For Singapore residents needing gas top-up work scheduled around inflexible work commitments, GoodCool's granular time-slot booking and post-service guarantee make them a strong second-choice contender.

📍 Address: 60 Paya Lebar Rd, #06-33 Paya Lebar Square, Singapore 409051
📞 Phone: +65 8125 5840
🌐 Website: goodcoolsg.com
⭐ Rating: 4.8 (2,388 Google reviews)

"Booked a specific 6pm Saturday slot for an R32 top-up on my Panasonic unit. GoodCool technician arrived on the dot, found a small coil leak, repaired it, then added gas. The 14-day guarantee gave me confidence they were doing it properly.", Janice L. ★★★★★

5. Affordable Aircon Services Pte Ltd, Best Budget Option

Affordable Aircon Services operates from their Ang Mo Kio Industrial Park 2 premises and delivers on its name with gas top-up pricing from SGD 60 per unit: among the most competitive transparent rates for a licensed Singapore aircon company with over 2,000 verified reviews. Their 2,219 Google reviews at 4.8 stars confirm consistent quality has not been sacrificed for price competitiveness. Gas top-up services cover both R32 and R410A refrigerant types, and the team performs a standard leak check before adding gas. Coverage is strongest across North, Northeast, and Central Singapore, with East and West Singapore also served. Operating hours run Monday to Saturday 9am to 6pm. For HDB homeowners who need a straightforward gas top-up at below-market pricing from a licensed company with a strong review record, Affordable Aircon Services is the clearest budget recommendation.

📍 Address: 5065 Ang Mo Kio Ind Park 2, Singapore 569568
📞 Phone: +65 9161 3535
🌐 Website: affordable-aircon.com.sg
⭐ Rating: 4.8 (2,219 Google reviews)

"Quoted SGD 65 for an R410A top-up, technician arrived on time, ran a leak check, confirmed no major leak, added gas, and the unit has been cooling properly for two months. No upselling, no surprises. Exactly what I needed.", Siti R. ★★★★★

6. TrustCare Aircon Maintenance & Servicing Singapore, Best Satisfaction Score

TrustCare Aircon Maintenance & Servicing operates from their Ubi Crescent office and holds a perfect 5.0-star Google rating across 44 verified reviews: matching SJR Air-Conditioned for the highest possible satisfaction score among all providers assessed. While their review volume is lower than the established players on this list, the consistency of their 5.0 rating across every review reflects a service team that prioritises getting each job right over volume throughput. Gas top-up services include leak detection as a standard step, and TrustCare covers both R32 and R410A refrigerant types. Their Ubi location provides good access to East and Central Singapore districts. For customers who weight per-job satisfaction consistency over sheer review count, TrustCare's perfect rating makes them a credible choice for R32 and R410A gas top-up work.

📍 Address: 10 Ubi Cres, #06-18, Singapore 408564
📞 Phone: +65 3158 2400
🌐 Website: trustcareaircon.com
⭐ Rating: 5.0 (44 Google reviews)

"TrustCare came to top up my LG unit. Did a leak check without being asked, found a minor issue at the valve connection, fixed it, then added gas. Unit has been holding charge for over a month. The extra step of checking first made all the difference.", Priya N. ★★★★★

7. Tech-V Air Conditioning, Best in Central Singapore

Tech-V Air Conditioning operates from their Whampoa West premises in the heart of Singapore and has accumulated 1,700 Google reviews at 4.9 stars, with strong coverage across Central, Novena, Toa Payoh, Bishan, and the Orchard corridor. Gas top-up services cover R32 and R410A refrigerant types, and Tech-V's central location minimises travel time to most city-fringe and central residential addresses. Their technicians are trained in full refrigerant circuit diagnosis: they identify leak sources, assess refrigerant circuit pressure, and perform targeted repairs before any gas is added. Operating seven days a week, Tech-V offers consistent availability for both weekday and weekend bookings. The 1,700-strong review base and 4.9-star rating reflect a company that has sustained service quality at significant scale. For central Singapore residents who want a trusted, proximate gas top-up provider with strong refrigerant expertise, Tech-V is the strongest local option.

📍 Address: 34 Whampoa W, #01-19, Singapore 330034
📞 Phone: +65 6286 6720
🌐 Website: techvace.com
⭐ Rating: 4.9 (1,700 Google reviews)

"Tech-V topped up the R32 in our Daikin system at our Novena apartment. Short travel time, arrived within the appointment window, checked circuit pressure, found no active leak, added gas, and explained maintenance tips for the unit. Professional and efficient.", Marcus T. ★★★★★

8. Aircon Uncle, Best for HDB Residents

Aircon Uncle operates from their Frontier Building premises in Ubi and has built a strong reputation among HDB homeowners across Singapore, with 916 Google reviews at 4.8 stars and a service approach that is straightforward, clearly priced, and well-matched to the needs of residential gas top-up work. Their technicians handle R32 and R410A refrigerant types and carry out a standard leak assessment before topping up. Pricing is published transparently on their website, with no hidden charges for standard residential gas top-up jobs. Coverage spans most HDB estates island-wide, and the team's communication style is practical and jargon-free, making Aircon Uncle particularly popular with homeowners who want a technician who explains the problem clearly rather than arriving, working silently, and leaving. For HDB flat owners who want a reliable, honest gas top-up service at fair pricing, Aircon Uncle is a consistent recommendation.

📍 Address: 52 Ubi Ave 3, #05-47 Frontier Building, Singapore 408867
📞 Phone: +65 9852 2583
🌐 Website: airconuncle.com.sg
⭐ Rating: 4.8 (916 Google reviews)

"Aircon Uncle came to top up the R410A in our HDB bedroom unit. He explained everything clearly: why the gas was low, what he was checking, what the price covered. No upselling, no mystery. The unit has been cooling well for two months since.", Ahmad F. ★★★★★

9. 338 Aircon, Best for High Volume

338 Aircon operates from their Duku Road premises and is one of Singapore's highest-volume aircon service providers, with 10,301 Google reviews at 4.9 stars: placing them among the most reviewed aircon companies in the country alongside SoCool. Their large technician pool supports island-wide coverage and a high throughput of gas top-up jobs across residential and light commercial properties. Gas top-up services cover R32 and R410A refrigerant types, and 338 Aircon's scale means their technicians are experienced across a broad range of leak scenarios and refrigerant circuit configurations. Operating seven days a week, same-day bookings are frequently available. For customers in Singapore who want the assurance of a large, well-reviewed company with a consistent track record at high volume, 338 Aircon is a strong option for gas top-up work.

📍 Address: 15 Duku Rd, Singapore 429165
📞 Phone: +65 9222 4141
🌐 Website: 338aircon.sg
⭐ Rating: 4.9 (10,301 Google reviews)

"Used 338 Aircon for a gas top-up on two Samsung units. Technician ran a leak test on both, found one needed a minor repair before topping up. The extra step was included in the quoted price. Both units have been performing well since.", Cheryl W. ★★★★★

10. DW Aircon Servicing Singapore, Best for Emergency Repair

DW Aircon Servicing operates from their Lower Delta Road premises and is one of Singapore's most comprehensive aircon repair and maintenance companies, with 3,330 Google reviews at 4.9 stars and a particularly strong track record in emergency gas-related repair work. Their technicians are qualified to handle the full refrigerant circuit: leak detection with electronic leak detection equipment, coil leak repair, valve replacement, gas recovery, and full R32 or R410A recharge. DW operates seven days a week from 8am to 10pm, and emergency same-day response for refrigerant-related failures is a consistent feature of their verified reviews. For homeowners or commercial operators in Singapore whose aircon has failed due to refrigerant loss and who need fast, competent repair-plus-top-up service, DW Aircon is the strongest emergency option on this list.

📍 Address: 1090 Lower Delta Road #03-07B, Singapore 169201
📞 Phone: +65 6909 2200
🌐 Website: dwaircon.com
⭐ Rating: 4.9 (3,330 Google reviews)

"Aircon stopped cooling on a Friday evening. DW responded within the hour, diagnosed a refrigerant leak at the indoor coil, repaired the leak, and recharged the R32 gas the same night. Proper emergency service: fast, competent, and fairly priced.", Michelle T. ★★★★★

How They Compare

What to Look for When Hiring an Aircon Gas Top-Up Service

Leak detection before top-up. This is the single most important criterion. Refrigerant in a properly sealed aircon system does not deplete on its own: if your unit is low on gas, there is a leak. A company that tops up the gas without first finding and fixing the leak is wasting your money and potentially causing further damage. Every reputable gas top-up provider in Singapore should inspect for leaks before adding any refrigerant. If a company skips this step, find a different provider.

Refrigerant type certification. R32 and R410A require different handling procedures, different recovery equipment, and different technician certifications. Most Singapore residential units installed after 2015 use R32; older units use R410A or R22 (now largely phased out). Confirm that the company you hire is certified to handle the specific refrigerant type in your system before booking. A technician without proper R32 certification handling an R32 system is both unsafe and non-compliant with Singapore regulations.

Pricing transparency. Legitimate gas top-up providers in Singapore display price ranges on their website or provide a written quote before the technician arrives. Be wary of companies that quote only verbally on-site after the technician has already opened the unit: the price tends to escalate at that point. Ask for a written quote that covers labour, gas quantity (typically priced per pound or per kg), and any repair work identified.

Review recency and volume. A 4.8-star rating across 50 reviews is less meaningful than the same rating across 2,000 reviews. More important than the average is recency: check that reviews have been posted in the last three months. A company with a strong historical rating but no recent reviews may have changed ownership or declined in service quality.

Post-service warranty. Reputable gas top-up companies offer a warranty on their work: typically 30–90 days during which they will return at no charge if the unit loses refrigerant again. This warranty signals that the company has confidence in the quality of their leak repair and is not simply refilling and walking away.

Frequently Asked Questions

How much does an aircon gas top-up cost in Singapore in 2026?

Gas top-up pricing in Singapore for 2026 ranges from SGD 60–150 per unit for R410A refrigerant and SGD 80–180 per unit for R32, depending on the volume of gas required and whether leak repair work is also needed. Prices vary by company, unit type, and gas quantity consumed. Always request an itemised written quote covering gas cost, labour, and any repair identified before the technician starts work. Confirm whether GST is included in the quoted figure.

What is the difference between R32 and R410A refrigerant?

R32 is the current standard refrigerant for most residential aircon systems installed in Singapore from 2015 onwards. It has a lower global warming potential than R410A and operates at higher pressure, requiring different certified handling equipment and procedures. R410A was the dominant residential refrigerant before 2015 and remains in use in older units. R22, an older refrigerant, has been largely phased out in Singapore. Always confirm which refrigerant your unit uses before booking: it is typically printed on the specification label on the indoor unit.

Why does my aircon keep losing gas?

Refrigerant loss always indicates a leak in the sealed refrigerant circuit. Common causes include: small cracks in the copper evaporator or condenser coils (often caused by vibration or corrosion); loose or faulty flare fittings where refrigerant pipes connect to the indoor and outdoor units; a damaged Schrader valve; or physical damage to the refrigerant lines. A gas top-up without leak repair is a temporary fix: the refrigerant will slowly escape again through the same leak path. The correct approach is to locate the leak, repair it, and then recharge the circuit.

Can I top up my aircon gas myself in Singapore?

No. Refrigerant handling in Singapore requires certification under the NEA regulatory framework. Purchasing, handling, or disposing of refrigerant without the appropriate licence is illegal. All gas top-up work must be carried out by a licensed technician. Attempting a DIY top-up also risks personal injury from high-pressure gas, incorrect refrigerant type, and voiding the manufacturer warranty on your unit.

How long does an aircon gas top-up take?

A standard gas top-up including leak check takes 30–60 minutes per unit. If a leak is identified and requires repair, add 30–60 minutes depending on the location and severity of the leak. Units requiring full gas recovery, circuit flushing, and recharge take 90–120 minutes. Most residential gas top-up visits for a single unit are completed within one hour.

How do I know if my aircon needs a gas top-up?

Common symptoms of low refrigerant in Singapore aircon units: the unit blows air but fails to reach the set temperature; the indoor unit produces unusual hissing or bubbling sounds from the refrigerant circuit; ice forms on the indoor unit coil or the outdoor unit refrigerant pipe; the outdoor unit runs continuously without the room cooling down; or the unit has been serviced recently but still performs poorly. If you observe any combination of these symptoms, request a gas check and refrigerant pressure test rather than a standard general service.

What happens if I ignore low refrigerant for too long?

Operating an aircon unit under low refrigerant conditions causes the compressor to work harder to compensate for reduced cooling capacity. Sustained operation in this state accelerates compressor wear and can lead to premature compressor failure: the most expensive single repair in any aircon system, often costing SGD 500–1,200 or more depending on brand and unit type. Addressing low refrigerant early, with proper leak detection and repair, is significantly cheaper than waiting until the compressor fails.

Are aircon gas top-up technicians licensed in Singapore?

Yes. Singapore's National Environment Agency (NEA) requires technicians handling fluorinated greenhouse gases (F-gases) including R32 and R410A to hold the relevant certification. The BCA also regulates contractors performing certain types of aircon and mechanical ventilation work. Always confirm that the company you hire employs NEA-certified refrigerant technicians. Reputable companies will state their certifications on their website or provide documentation on request.

How often should I need a gas top-up?

A properly sealed aircon system in good condition should not require a gas top-up more than once every 5–10 years, if at all. If your unit has needed a top-up within the last 12–18 months, or if you have had multiple top-ups in successive years, there is an unresolved leak in the refrigerant circuit that requires proper investigation and repair rather than another temporary refill.

Verdict

SJR Air-Conditioned is the best aircon gas top-up service in Singapore for 2026. Their mandatory pre-top-up leak detection, perfect 5.0-star Google rating, full R32 and R410A certification, and transparent upfront pricing combine to produce the most complete and correctly-executed gas top-up service on this list. For customers who need the highest review volume as a primary trust signal, SoCool Pte Ltd and 338 Aircon both offer over 10,000 Google reviews at 4.9 stars with island-wide coverage. For budget-focused homeowners, Affordable Aircon Services delivers reliable gas top-up work at below-market pricing. The single most important thing to confirm before booking any gas top-up provider in Singapore: make sure they perform leak detection first. Visit sjraircon.sg to book SJR Air-Conditioned directly, or use this list to shortlist and compare.