How Often Should You Service an AC in Delhi? (2026)

The short answer, for a Delhi home

• Once a year, before summer, is the floor. Below this you are gambling. If you do only one thing, do a full service in February or March, before you need the unit.
• Twice a year if you run it hard. One before summer and one around September, after the season has been fought and won. "Hard" in Delhi means roughly 8–10 hours a day or more through the summer, which describes most bedrooms with a working family in them.
• Every three to four months if you are on a main road, near construction, or on a ground floor. This is the case the national blogs hedge about and never name. If you can wipe grey dust off your window sill every second day, your outdoor coil is collecting the same thing.
• A deep clean or jet wash every two to three years, on top of the regular services. A routine service cleans the filters and wipes the coil. A jet wash actually flushes years of caked grime out of the fins, and a coil that has never had one will be carrying a hidden layer of it.

Notice what is missing from that list: gas. A yearly gas refill is not part of AC maintenance and never was. Refrigerant is a sealed, circulating fluid — it is not consumed, and a healthy AC never needs topping up. If you are being sold gas "as part of the annual service", you are being sold something you do not need.

The economics nobody publishes

Here is why servicing is not a chore but a trade, and it is a good one.

A basic split AC service and cleaning in Delhi NCR typically runs ₹500–900. Do it twice a year and you have spent, at the top of that range, ₹1,800 in a year. Now the other side of the ledger: a compressor replacement on a 1.5 ton unit typically costs ₹6,000–16,000.

The connection between the two is not hand-waving. A clogged coil is a compressor that has to work harder and run longer to move the same heat, in a city where the ambient air it is trying to dump that heat into is already 45°C. Heat and continuous running are precisely what kills compressors. The service is not buying you a slightly cleaner filter. It is buying the compressor its margin back.

And there is a second return you collect every month. A choked coil raises your power consumption for the same cooling. That shows up on the electricity bill long before it ever shows up as a breakdown — which is why the most common way a Delhi household discovers its AC needed a service is not that the AC failed, but that the June bill arrived.

What a service typically costs in Delhi NCR

Indicative 2026 market ranges for the jobs above. If you want the full picture across gas, installation, PCB and compressor work, our AC cost guide carries the complete table.

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.

February and March — and why booking in May costs you more

This is the part with the most money in it and it is almost never said out loud.

An AC technician's year has one enormous peak. From the second week of May, every household in Delhi discovers the same problem at the same time, and the entire trade is booked solid. In that window, three things happen to you at once:

• You wait days. Not hours. And you wait them in a hot room, which is a terrible place from which to negotiate.
• You pay at the firm end of every range. Nobody discounts in peak season, because they do not have to. The same job that had a soft price in February does not in May.
• You get a tired technician on his ninth call of the day. The work is rushed, and rushed work is where the coil gets wiped instead of washed.

In February and March, the same technicians have empty calendars. They are unhurried, they are competing for your job, and — this is the point — the service actually does something for you, because it happens before the season it is supposed to protect. A service booked in late May is repairing a problem. A service booked in February is preventing one.

The second window, if you service twice, is September or October: the unit has just finished six months of continuous running through the worst dust of the year, and cleaning it before it sits idle all winter stops that grime from baking on.

AMC or pay-per-service? The honest comparison

An annual maintenance contract typically runs ₹2,000–4,000 per unit per year in Delhi NCR and usually bundles two or three visits. Two paid services at ₹500–900 each come to roughly ₹1,000–1,800 — that is simply the service range doubled, added up in front of you.

Do that subtraction and the AMC is not automatically the cheaper option — which is the opposite of how AMCs are usually sold. What you are really buying with the higher number is not the visits. It is what sits around them:

• An AMC is worth it when: you own several units and the visits add up; you genuinely will forget to book (an unserviced AC is far more expensive than any AMC); you want priority in peak season, which is the real value in Delhi; or the contract includes gas top-up and parts coverage that would otherwise be a big open-ended bill.
• Pay-per-service is usually better when: you have one or two units; you are organised enough to book in February; and you would rather choose a technician each time on merit than be assigned whoever the contract sends.

Before signing any AMC, ask three questions in writing: how many visits, are parts and gas included or excluded, and what is the response commitment in May? An AMC that excludes parts, excludes gas and gives you no priority in peak season is just two services sold at three services' price.

Signs your AC is overdue

You do not need a calendar to know. The unit tells you:

• It takes longer to cool the room than it used to. The most reliable early sign, and the easiest to rationalise away.
• Airflow from the indoor unit feels thin. Pull the filter out and hold it to the light. If light does not pass through it, air is not passing through it either.
• The electricity bill climbed with no change in usage. The unit is running longer for the same result.
• A musty smell when it starts up. Damp organic matter on the coil or in the drain tray. This one is about the air you are breathing, not just the cooling.
• Water dripping inside the room. A blocked drain line, usually clogged with the same dust.
• Ice on the copper pipe. Switch it off and let it thaw. Running an AC with a frozen coil is how compressors die.
• It cools fine at night and gives up at 3pm. The outdoor unit cannot shed heat into 45°C air with a dust-caked condenser. Clean it.