How to Choose the Right AC Unit for Your Home

An undersized AC runs non-stop without reaching your desired temperature. An oversized one short-cycles, wasting energy and creating uneven cooling. Getting the size right is the single most important decision.

Calculate the Right BTU Capacity

As a rough guide, you need about 20 BTU per square foot. A 20 m² room needs roughly 12,000 BTU (1 ton). But factors like ceiling height, sun exposure, and insulation quality can shift this significantly.

Inverter vs. Non-Inverter

Inverter ACs adjust compressor speed to maintain temperature smoothly, using 30–50% less energy than non-inverter units. They cost more upfront but pay for themselves within two cooling seasons.

Energy Efficiency Ratings

Look for the highest energy class you can afford. An A+++ unit may cost 20% more than an A unit, but it will consume significantly less electricity over its 10–15 year lifespan.

Single Split vs. Multi-Split

A single split has one outdoor unit per indoor unit. A multi-split connects several indoor units to one powerful outdoor compressor — ideal when outdoor space is limited.

Noise Level Matters

Check the decibel rating for both indoor and outdoor units. For bedrooms, aim for an indoor unit below 25 dB — whisper-quiet operation makes a real difference for sleep quality.

Smart Features Worth Having

Wi-Fi connectivity lets you cool your home before you arrive. Self-cleaning filters, sleep mode timers, and air quality sensors add comfort with minimal extra cost.

Always Hire a Certified Installer

Even the best AC unit will underperform if installed incorrectly. Improper pipe runs, wrong gas charge, or poor drainage cause breakdowns and void your warranty.