How Often Should You Service Your Air Conditioner? What LG, Daikin, and Voltas Actually Require

Somewhere in a drawer, folded in with old bills, is a piece of paper that decides whether your AC’s compressor is covered the next time it breaks. Most people have never read it, and if you’re assuming “once a year” is enough, you’re probably wrong: LG’s published warranty terms call for servicing your split AC at least every 3 months. Voltas requires two Preventive Maintenance Services every 6 months (which works out to roughly the same 3-month rhythm) for the second through fifth year of its extended warranty. Daikin’s terms specify two complimentary maintenance visits per 12-month period - closer to every 6 months. Three of India’s biggest AC brands, three different answers, and one document in that drawer that actually says which one applies to you.

Why the frequency varies by brand, and why it matters

Air conditioner warranties in India typically split into two things: a short base warranty on the whole unit (usually 1 year) and a much longer extended warranty on the compressor specifically - the single most expensive part to replace. That compressor warranty is where manufacturers get strict about maintenance, because a neglected AC fails at the compressor long before the rest of the unit gives out.

This is also where the confusion starts. A homeowner who’s used to “AC gets serviced once before summer” - a reasonable habit for basic filter cleaning and comfort - assumes that’s also enough to satisfy the warranty’s maintenance requirement. For at least two of the three major brands covered here, it isn’t. Missing the actual required frequency doesn’t just mean a slightly dirtier filter; it can mean the multi-year compressor warranty - often the most valuable part of the whole purchase - is no longer being honored if something goes wrong.

Air conditioners also get a stricter maintenance requirement than most other home appliances for reasons that are fairly intuitive once you think about the hardware involved: a split AC’s compressor is a mechanical part running a continuous refrigerant cycle every time it’s on, and the outdoor unit sits exposed to dust, pollen, and weather in a way a refrigerator or washing machine never does. A washing machine’s warranty terms don’t typically specify a maintenance visit frequency at all - an AC’s terms almost always do, precisely because the compressor is both the most expensive part and the one most exposed to wear.

Maintenance isn’t always free, even when it’s required

One detail that catches people off guard: a maintenance visit being required by the warranty doesn’t automatically mean it’s free. Voltas’s own terms are explicit that “standard labour charges towards carrying out this maintenance will have to be borne by the customer” for the Preventive Maintenance Services required to keep its extended warranty active. In other words, you can be required to pay for the visit that keeps your warranty valid - skipping it to save money is exactly the false economy that voids the much larger compressor coverage later.

"A maintenance visit being required by the warranty doesn't automatically mean it's free."

This is worth budgeting for the same way you’d budget for a car’s scheduled service: a predictable, recurring small cost that exists specifically to avoid a much larger unplanned one.

It’s also not consistent brand to brand. Daikin’s terms describe its two-visits-per-year maintenance as “complimentary” - the visit itself is free, though replacement parts or refrigerant top-ups found necessary during it wouldn’t be. Voltas, by contrast, requires the customer to pay standard labour charges for the very same category of required visit. Two brands, two different answers to “does the maintenance my warranty requires cost me anything” - another reason the specific answer has to come from your own model’s terms, not a general assumption either way.

How to find your AC’s actual requirement

Since the three brands compared here don’t agree with each other, and your own specific model’s terms may differ even within a brand, the comparison table above is a starting point, not a substitute for checking your own paperwork:

1. Start with the physical warranty card that came in the box - the maintenance frequency is usually stated alongside the warranty period itself, not in a separate document.
2. Check the brand’s official warranty page online if the card is missing - all three brands covered here publish their current terms publicly (linked in the table above), and terms do get updated between model years.
3. Call the manufacturer’s customer care line with your model number if neither of the above is available - they can confirm the exact terms attached to your specific unit.
4. Ask directly whether registration is required to activate extended coverage (Voltas explicitly requires this within a week of purchase) - this is easy to miss and isn’t always obvious from the warranty card alone.

What each brand’s warranty terms actually require

Based on the currently published warranty terms of LG, Daikin, and Voltas’s India operations:

A few things worth noticing in this table beyond the headline maintenance frequency:

• Voltas requires registration within a week of purchase to activate the extended warranty at all - miss that window and the 5-year comprehensive coverage may not apply, regardless of how well you maintain the unit afterward.
• Daikin’s terms explicitly exclude gas charging, related labour, and transportation charges even during a covered compressor replacement - “covered” doesn’t always mean “free,” and it’s worth knowing which costs are yours before a repair happens, not after.
• Inverter models carry meaningfully more compressor warranty value than non-inverter ones across every brand here - which also means there’s more at stake if the maintenance requirement lapses on an inverter AC specifically.

Filter cleaning vs. professional maintenance - they’re not the same thing

This is the single most common point of confusion, and it’s worth being precise about it: wiping down or rinsing your AC’s air filter yourself is not the same thing as the “preventive maintenance” your warranty is actually asking for.

Daikin’s warranty terms explicitly list air filters among the items the standard warranty does not cover at all - along with plastic and metal parts and the remote handset. Since the filter was never a warrantied part in the first place, cleaning it yourself has no bearing on your compressor or PCB coverage either way. Cleaning your own filter every few weeks is still a good idea for cooling performance and air quality - it’s just a separate thing from the maintenance requirement that protects your warranty.

The maintenance that actually matters for warranty purposes is the professional preventive service: checking refrigerant levels, electrical connections and wiring, the compressor itself, and the condenser and evaporator coils - work that manufacturers require an authorized technician to perform and log, not something a homeowner does themselves. That’s the visit that needs to happen on whatever schedule your brand specifies, and that’s the visit you need a record of.

What happens if you skip it

Both Daikin’s and Voltas’s warranty terms are direct about this. Daikin’s terms state the compressor warranty becomes void “if the failure of the compressor is due to lack of proper preventive maintenance of the Product by the Purchaser.” Voltas ties its entire extended warranty (not just the compressor) to registering for and completing its Preventive Maintenance Service schedule from year two onward.

In practice, this means a compressor failure in year 4 or year 7 - well within what looked like a generous multi-year warranty at the time of purchase - can be denied if you can’t show the required maintenance actually happened on schedule. The unit still failed; the warranty just no longer covers it, because the condition attached to that coverage wasn’t met.

This is a materially different situation from the more commonly known warranty pitfalls - an unauthorized repair, a missing serial number, using the wrong parts - because those are one-time events you either did or didn’t do. A maintenance schedule is a multi-year commitment with several separate checkpoints, and it only takes one missed visit, years after the purchase excitement has faded, to create the gap a denied claim points to. It’s also the pitfall least likely to be caught in the moment, since nothing visibly goes wrong when a maintenance visit is simply skipped - the AC keeps cooling the room normally, right up until the compressor eventually fails and the maintenance history becomes the thing that decides whether that failure is covered.

None of this is unique to air conditioners, and the pattern echoes what we covered in our guide on protecting an appliance warranty from the day you buy it - the warranty was never truly “free” coverage with no strings attached, it was coverage conditional on doing a few specific things. For ACs, one of those things is a maintenance schedule most people never actually read.

A simple way to keep the record

The recurring theme across every brand’s terms here is that a maintenance requirement is only useful to you if you can prove it happened - which means the actual deliverable of each service visit isn’t just a cleaner AC, it’s a dated service record you can produce later if a compressor claim is ever questioned.

That’s a genuinely awkward thing to track with a physical folder, because it’s not a single document like an invoice - it’s a running log across years, ideally tied to the specific unit’s serial number and warranty terms.

If you’d rather keep a simple manual log, a shared note or spreadsheet with the date, technician name, and what was checked at each visit works too - the brand doesn’t matter, having a record that survives longer than your memory does.

Quick reference: AC maintenance checklist

• Check your specific model’s warranty card for its exact required maintenance frequency - don’t assume it matches another brand’s schedule
• Register for extended warranty/PMS immediately if your brand requires it (Voltas: within a week of purchase)
• Clean or rinse the air filter yourself every few weeks - this is good practice but is separate from the warranty-relevant maintenance
• Book the professional preventive maintenance visit on whatever schedule your brand specifies, not just “before summer”
• Get a dated service record or invoice from every visit, and keep it with the unit’s other paperwork
• Note which costs are excluded even during a covered repair (e.g. gas charging, transportation) so a compressor claim doesn’t come with a surprise bill
• If a compressor fails, check your maintenance records before assuming the warranty won’t apply - and before assuming it will

Skipping a maintenance visit doesn’t just risk a less efficient AC - for at least two of the three brands compared here, it can mean the multi-year compressor warranty you thought you had isn’t actually active anymore. The schedule is short and specific; the only real mistake is not knowing what it is.