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How often should you service an AC in Nellore? A season-by-season answer

Nellore heat, dust and coastal humidity wear an AC faster than the manual assumes. A realistic service schedule, what a service must include, and the warning signs.

3 min read · Updated 19 August 2026

An AC in Nellore works harder than almost anywhere in the country. From March to June the outdoor unit sits in 40°C air trying to dump heat into it; from July to December the humidity means the indoor coil is wet for months, which is exactly what dust and mould like. A service schedule written for a milder city will leave you with weak cooling, a smell when it starts, and a compressor that ages early.

The honest schedule

Before summer (February–March). This is the one that matters. A full service now means the unit goes into the hottest months with clean coils and correct gas pressure, which is when the difference between "cools in ten minutes" and "runs all night and never gets there" shows up.

After the monsoon (October–November). Three months of humidity leave the indoor coil and drain tray carrying growth you cannot see. A second service clears it before the unit sits idle or runs lightly through winter.

Monthly, yourself. Slide the filters out, rinse them under a tap, let them dry in the shade and refit. In a dusty locality — anywhere near a main road, construction, or open ground — this alone keeps airflow up between services.

Where Nellore is different

  • Coastal air. Homes in Muthukur, Krishnapatnam, and the eastern side of the city get salt in the air. It corrodes the outdoor coil fins and the electrical contacts. Ask for the outdoor coil to be washed, not just brushed, and have the contactor checked.
  • Hard water in the tray. If your area's water is hard, the drain tray and line scale up faster. Water dripping from the indoor unit is usually this, not a fault in the unit.
  • Voltage swings. Evening voltage dips and spikes are common in summer. A stabiliser is not optional for an inverter or non-inverter AC here; it is the cheapest protection for the compressor you can buy.

Signs you have left it too long

  • Cooling is noticeably weaker than last year at the same setting.
  • A damp or sour smell for the first minute after switching on.
  • Water dripping from the indoor unit.
  • The outdoor unit runs much louder than it used to, or the fan stops and starts.
  • Your electricity bill climbed without a change in use.

Any one of these is a reason to book a service rather than wait for the annual one.

What a service should cost

A standard AC service in Nellore — coil clean, filter wash, drain flush and a check of gas and electricals — is ₹399 on our rate card. A gas refill is a separate job, ₹700 for a split unit, and you should not need one every year: if you do, there is a leak that needs finding first.

When it is a repair, not a service

A service keeps a working AC working. If the unit does not switch on, trips the MCB, blows warm air continuously, or the outdoor fan is not turning, that is a fault — book a repair rather than a service so the technician arrives with the right parts.

Questions people ask

Is one service a year enough in Nellore?
For a bedroom split AC that runs eight months a year, no. Two services — one before summer in February or March and one after the monsoon — is the realistic minimum. A unit near the coast or on a dusty road benefits from a quick filter clean every month in between.
What does a proper AC service include?
Filter wash, indoor coil clean, outdoor coil wash, drain line flush, fan and blower check, gas pressure check, and a look at the electrical connections and capacitor. If a 'service' takes ten minutes and only the filters come out, it was not a service.
Can I do any of it myself?
The filters, yes — slide them out, rinse, dry in shade, refit. Everything else involves the coil, the drain or the refrigerant circuit and is worth leaving to a technician.

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