Why does this show percentages, not dollar amounts?

The electricity rate cancels out of every percentage calculation, so the savings figures apply equally in Singapore, Bangkok, Jakarta, Manila, or anywhere else in the tropics. Enter your local rate to also see a dollar figure.

What is Sleep Mode on an aircon?

Sleep Mode gradually raises the temperature by 0.5–1°C per hour as you sleep, reducing cooling load over the night. It typically has its own dedicated button on the remote — look for the crescent moon icon.

Does Dry Mode cool the room?

Yes, though more gradually than Cool mode. Dry mode runs the compressor at reduced capacity to remove humidity rather than aggressively chase a temperature target, and it typically uses 20–50% less electricity than Cool mode.

Aircon Energy Savings · Tropical Asia

What would one habit change save you?

Adjust the inputs to match your room, then see what switching to Sleep Mode, Dry Mode, or a timed off-window would save — in any city, no electricity rate needed.

Bedrooms cooled

Hours of sleep8 hrs

Current temperature22°C

💵 Know your rate? Add it for $ figures ▾

Singapore Q3 2026 (34.78¢)

Or pick a city reference rate

These are recent reference rates, not live figures. Why % savings apply everywhere →

Estimate only — not a bill. % savings applies regardless of local electricity rates. Assumes a typical modern inverter unit. Full assumptions ↓

Keen to optimize savings even more? ▾

A Little Effort: Once in Dry Mode, adding a timed off-window right before you wake saves even more. Needs a working off-timer — more setup than the steps above.

(hours−1)h Dry + 1h Off

Based on your hours setting above

Why 1 hour before wake? Your core body temperature naturally nadirs ~2 hours before your alarm — the hour right before you wake is when you need the least active cooling. The science behind this →

🌬️ Comfort dial (Dry Mode units)

Most units auto-lock Dry Mode at ~24°C (nothing to adjust). Some higher-end units let you set it — 26°C uses less energy than 24°C, and feels similarly cool via humidity. Same saving either way for Standard units.

Standard
fixed ~24°C — saving is flat

Advanced
set 26°C — saves a little more

Feels likeTemperature fixed by unit (~24°C) ~22°C

💧 Bonus: Dry Mode also helps protect leather and clothing in cabinets from mould — it keeps room humidity below the ~73% threshold where mould growth begins on leather. Full details →

Smart Cooling guides →

Sleep mode, inverter tips, filter cleaning, why your bill is high

Estimate only: % savings shown apply regardless of local electricity rates — the rate cancels out of the calculation. $ figures (when shown) are computed from the reference rate you selected or entered, and are only as current as that rate.

Aircon-only: This is an aircon-only estimate. Your total electricity bill will be higher due to other household appliances. In Singapore, aircon typically accounts for 25–40% of a household's total electricity use.

Efficiency assumed: Assumes a typical current-generation inverter unit. Older or non-inverter units typically consume 20–50% more power for the same usage.

Averages, not personalized: Load figures are industry midpoints, not your specific unit's measured draw. Room size, insulation, and outdoor temperature also affect actual consumption.

Temperature model: The per-degree savings estimate (6–10%) is based on Celsius-native HVAC industry sources; treat it as a range, not a precise figure.

City rates: Reference rates are sourced from official utility releases but may be outdated. Check your own bill for the most accurate figure.

City rate note (Honolulu): Hawaii has a subtropical/oceanic climate, not equatorial tropical. Year-round heavy aircon use is less common than in the other cities listed. The rate is included for reference only.

Prefer a System 2/3/4 estimate? (Singapore/Malaysia) →

By System Size · Singapore / Malaysia

Typical consumption by aircon system

Shown in kWh/month — works regardless of electricity rate. Enter a rate (or pick a city below) to also see a $ figure.

"System 2/3/4" is Singapore and Malaysia HVAC industry terminology. If you're elsewhere, the bedrooms-based calculator works everywhere.

System 2

System 3

System 4

— kWh/mo average

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💧 —
See full savings ladder →

Optional: pick a city rate to see $ figures

Reference rates — check your bill for your actual rate.

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