‘AC gas kharab ho gaya’ is the most expensive four words in Indian appliance service — and half the time, it isn’t true. AC refrigerant doesn’t get ‘used up’ like petrol — it only needs refilling when there’s a leak. This guide explains the real costs, the leak-test that dealers skip, and how to protect yourself from the refill scam.
Quick picks (TL;DR)
| Gas type | Refill cost (1.5T) | Notes |
|---|---|---|
| R32 (current standard) | ₹2,000-3,500 | Most 2018+ ACs |
| R410A (older inverter) | ₹2,500-4,000 | Being phased out |
| R22 (pre-2017 ACs) | ₹1,500-2,500 | Being phased out entirely |
When you actually need a gas refill
The symptoms that suggest low gas
Cooling drops noticeably while the AC runs normally · ice forming on the indoor coil or copper pipes · the compressor short-cycles · hissing sounds near the outdoor unit. One symptom alone isn’t proof — combos are.
The leak test dealers skip (demand it)
A proper refill starts with a nitrogen pressure test or leak-detection — because refilling a leaking AC is renting cold air for 3-6 weeks until it leaks out again. If the technician refuses a leak test, you’re being scammed. insist, or call the brand’s authorised service instead.
Refill vs top-up vs vacuum-and-refill
‘Top-up’ (adding gas without removing old) is the cheap shortcut that mixes refrigerant grades — decline it. The correct job: recover remaining gas, vacuum the lines, pressure-test for leaks, then refill to exact weight by specification. It costs more and lasts years.
The honest cost breakdown
1. Brand authorised service (the default right answer)
Check Price →₹1,800-4,000 · Genuine gas weight, vacuum process, leak test included
Best for: Always the first call
LG, Daikin, Voltas authorised services cost 10-20% more and do the full job — including the warranty-preserving paperwork.
- Genuine refrigerant
- Proper vacuum + test
- Service records
- Costlier than street technicians
- Booking delays in May
2. Gas charging weight scale (how pros verify)
Check Price →≈ ₹2,500 · Digital refrigerant scale — pros charge by exact gram weight
Best for: The verification tool
Ask your technician to charge by weight per the nameplate spec. The scale’s presence instantly separates professionals from guessers.
- Exact charging
- No guesswork
- Reusable for any appliance
- Only for DIY-minded owners
- Learning curve
3. Preventive: annual jet service contract
Check Price →₹1,200-2,500/year · 2 deep cleans + inspection — catches leaks early
Best for: The prevention economics
Coil cleaning prevents the corrosion that causes leaks. An annual service contract is cheaper than one gas refill every two years.
- Prevents most gas loss
- Priority summer booking
- Filter/coil care included
- Only worth it with real service
- Skip cinema-model coupons
The refill scam patterns to refuse
“Gas khatam ho gaya, refill kar denge” without a leak test → decline. Top-up instead of recovery-and-vacuum → decline. “Aapka compressor kharab hai” + gas refill combo quote → get a second opinion from authorised service (compressor failures are rare in inverter ACs under 8 years). Cash-only, no bill → you lose all warranty and recourse. The honest job leaves a bill listing gas type, weight charged, and leak-test result.
Prevention beats refills: annual deep cleaning prevents coil corrosion (the top leak cause), a quality inverter AC with proper installation rarely leaks before year 8, and the right tonnage keeps the compressor from overworking.
FAQs
How much does AC gas refilling cost in India?
₹1,500-4,000 depending on gas type and whether it’s a proper vacuum-and-refill or a top-up. R32 (most modern ACs) runs ₹2,000-3,500 done correctly.
How often does AC gas need refilling?
Never, ideally — refrigerant is sealed and doesn’t deplete. A refill is only needed after a leak, and the leak must be fixed or the new gas escapes too.
How do I know if my AC needs gas or just servicing?
Weak cooling with clean filters usually suggests gas; weak cooling with dirty filters or wrong mode is a service issue. Demand the pressure/leak test before agreeing to any refill.
R32 vs R410A — does it matter?
R32 is the current standard (more efficient, lower GWP). Never mix grades; refills must match the nameplate specification exactly.