AC Myths vs Facts — common misconceptions, checked against real data

Setting AC to 16°C doesn't cool faster — the compressor runs at the same maximum rate regardless, it just runs longer. 5-star doesn't always mean the lowest bill — two same-tonnage models can have different real capacity, so raw bill comparisons can mislead. Bigger tonnage isn't automatically better cooling — oversized units cool too fast without removing humidity properly. See below for the full list, each linked to the real data behind it.

📐 Calculated estimate Based on real BEE-certified data — see the exact numbers below.

Myth: setting a lower temperature cools faster. Fact: it doesn't — the compressor already runs at maximum, a lower number just means it runs longer before stopping. Myth: 5-star always means the lowest bill. Fact: not when capacity differs — see our page on same-tonnage, different-ISEER models for a real example where the "5-star" comparison gets misleading. Myth: bigger tonnage always means better cooling. Fact: oversized units cool the room too fast without properly removing humidity — see our undersized-vs-oversized page. Myth: inverter AC keeps consuming maximum electricity continuously. Fact: it runs continuously at a low, adjusted speed — that's the efficient part, not a flaw. See our page on why the compressor keeps running. Myth: AC gas must be refilled every year. Fact: a properly installed, sealed system shouldn't need routine refilling — needing gas repeatedly points to a leak, not normal wear. Myth: AC should always be kept at 18°C. Fact: a moderate setting around 24°C cools comfortably with less drying effect and lower consumption — see our temperature-setting page. Myth: turning AC on and off every few minutes saves electricity. Fact: the opposite — restarting draws more power and re-cooling from a warmer start costs more than holding a steady temperature. See our on/off cycling page. Myth: copper pipe length doesn't matter. Fact: it directly affects cooling performance — see our installation page on why pipe quality and length matter. Myth: AC installation is just mounting the unit. Fact: vacuuming, nitrogen testing, drain slope, and correct piping all genuinely affect performance — see our installation mistakes pages. Myth: a new AC doesn't need servicing. Fact: routine filter cleaning and periodic servicing prevent the efficiency loss and consumption increase a dirty, unmaintained unit develops over time. Myth: higher fan speed always means higher electricity consumption. Fact: it's a smaller, mixed effect — slightly more fan power, but can shorten compressor runtime, so the net difference is usually minor. See our temperature and fan speed page.