A short list to run through before peak season hits, so your unit doesn’t fail on the hottest day of the year — and so you’re not competing with every other household in Delhi trying to book a technician at the same time.
Before You Switch It On For The Season
- Clean or replace the filters — a clogged filter is the single biggest drag on cooling efficiency.
- Check the outdoor unit for dust, leaves, or nesting debris blocking airflow.
- Run the unit for 15 minutes and feel whether the air is genuinely cold, not just moving.
- Listen for new rattles, clicks, or grinding sounds on startup.
- Check the drain line isn’t blocked — a common cause of water leaking indoors.
A Delhi-Specific Note on Power
Voltage fluctuations are more common in Delhi during the first heavy-load days of summer, when everyone switches their AC on at once. If your area has a history of voltage swings, a stabiliser is worth checking or installing before the season, since unstable voltage is a frequent, preventable cause of PCB and compressor damage.
When to Book a Professional Visit
If the unit hasn’t been serviced in over a year, a proper service check before the season starts is far cheaper than an emergency call once temperatures are already climbing and booking slots are full. A pre-summer visit typically includes a filter and coil clean, a refrigerant pressure check, and a check of electrical connections and capacitors — the parts most likely to fail under sustained summer load.