AC Gas Refill Charges in Delhi NCR (2026)

AC gas refill cost in Delhi NCR, by refrigerant

The single biggest driver of the price is which gas your AC runs on — and you do not get to choose. It is stamped on the sticker on your outdoor unit. Look for R22, R32 or R410A.

Indicative Delhi NCR market ranges, 2026. Each professional sets their own charge and quotes you free before starting. Parts are normally billed on top of labour.

Why R410A costs more than R22

People assume they are being overcharged because their AC is "fancy". They are not. The gases genuinely cost different amounts to buy and different amounts of skill to charge.

• R22 is the old refrigerant. It is being phased out worldwide because it damages the ozone layer, and Indian manufacturers stopped fitting it to new residential splits years ago. It is cheap to buy today — but that is temporary. As supply is squeezed, the price of R22 rises, which is why keeping an ancient unit alive gets more expensive every year, not less.
• R32 is what most new splits sold in Delhi now use. It is a single-component refrigerant, so a technician can top it up without dumping the existing charge. It is efficient and it costs more per kilogram than R22.
• R410A is a blend of two refrigerants, and that is the whole reason it costs more. A blend cannot simply be topped up: if it leaks, the two components escape at slightly different rates, so the mix left inside is no longer the right mix. The correct job is to recover what is left, evacuate the system, and charge it fresh by weight. That is more gas, more time, and better equipment — hence a higher bill.

This is also why "just put a little gas in" is a red flag on an R410A inverter unit. If someone offers to top up an R410A system in ten minutes without touching a vacuum pump or a weighing scale, they are doing a job that will not hold.

Do you actually need gas? A symptom table

Most people who ask for a gas refill in May do not need one. They need a service. The symptoms overlap enough that a dishonest technician can sell the expensive answer to the cheap problem, so here is how to read your own AC before anyone arrives.

The pattern is simple: gradual loss of cooling in a Delhi flat is usually dirt. Sudden loss of cooling is usually electrical. Refrigerant sits in the middle, and it can only be confirmed with gauges — never by eye, never by touch, and never from the doorway.

What a proper gas refill actually includes

A refill is not "connect cylinder, open valve, take money". If those are the only three things that happened, you did not get a refill — you got a delay. A job done properly has four parts, and you are entitled to ask which of them were done.

• 1. A leak test. Nitrogen pressure, soap solution on the joints, or an electronic sniffer. The technician is looking for where the gas went. If nobody looks, nobody found it, and it is still leaking.
• 2. The leak repaired. Usually a flare joint at the indoor or outdoor connection, a service valve, or a corroded spot on the outdoor coil — Delhi's air is hard on outdoor coils, and coastal-style corrosion shows up here from pollution rather than salt. A joint is a quick fix. A leaking coil is a bigger conversation.
• 3. A vacuum. Before new gas goes in, the system is evacuated with a vacuum pump. This pulls out air and — critically in Delhi's humidity — moisture. Moisture inside a refrigerant loop turns acidic, and it kills compressors. A technician who skips the vacuum is trading your compressor for ten minutes.
• 4. A charge by weight, and a pressure check. Refrigerant is charged to the weight printed on the unit's own sticker, not "until it feels right". Then pressures and cooling are checked with the unit running.

Ask for the gauge reading before and after. A professional will show you without being asked twice.

Red flags: how the gas-refill upsell works

The gas refill is the most profitable thing a technician can sell you, and it is almost impossible for a customer to verify. That combination is why it is the most commonly oversold job in the city. These are the tells.

• "Your gas is low" — said before anything was opened, measured or connected. Refrigerant charge cannot be judged by looking at the unit or feeling the air. It needs gauges. A diagnosis delivered from across the room is a sales pitch.
• "Every AC needs gas every year." False, and it is the single clearest signal to end the visit. A sealed system does not consume refrigerant.
• No answer to "where is the leak?" Ask it plainly. A good technician will point at the joint, show you the oil stain, or tell you honestly that they pressure-tested and it held — in which case you probably do not need gas at all.
• The refill is offered instead of a service, not after one. The cheap job should always be ruled out before the expensive one is sold.
• No vacuum pump in the bag. If there is no pump, there was no evacuation, and the charge is going into a system full of Delhi's humid air.
• Pressure to decide right now, in the heat. A room at 42°C is not a negotiating position, and everyone in this trade knows it. Any quote above a few thousand rupees is worth a second opinion, and a second opinion is worth one more hot afternoon.
• You paid for gas last summer and you are being asked again. That is not bad luck. That is an unrepaired leak, and you should say so out loud.

The five questions to ask before you agree

You do not need to know anything about refrigeration to protect yourself. You need five questions, and the willingness to wait for real answers.

• "What are the gauge readings?" A number, not an adjective.
• "Where is the leak, and what will you do about it?" If there is no leak, there is no reason for the gas to be low.
• "Will you vacuum the system before charging?" The answer should be yes, immediately, with no hesitation.
• "What refrigerant does my unit take, and how much by weight?" It is on the sticker. A technician who does not check the sticker is not charging by weight.
• "What is the quote — labour, gas and any parts, separately?" Get it before the work starts, not after. Work that begins before a price is agreed is how bills grow.

And one habit worth building: service the unit in February or March, before Delhi's rush. Clean coils rule out the commonest cause of weak cooling, so if the AC still struggles in May you already know it is worth investigating properly — and you will not be making that decision in a hot room with a technician waiting.