Why is my outdoor unit not working at all?

Check that it's receiving power first — a tripped breaker or a disconnected isolator switch near the unit are common, safe-to-check causes. If it has power but the fan or compressor still isn't running, that's an internal fault needing a technician — don't open the outdoor unit's electrical compartment yourself.

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

An outdoor unit with no power at all is a different problem from one that runs but sounds wrong (see our page on outdoor unit noise and vibration for that case) — this is specifically about it not starting up whatsoever. Power supply issues are genuinely the most common cause and the safest to rule out yourself before assuming something's broken inside the unit.