Aircond Usage: Day or Night – When Does It Cost More in Malaysia?
- Dora
- 13 Nov
- 3 min membaca
Table of Contents
Introduction
In Malaysia's hot and humid climate, air conditioners are a necessity in most homes and offices. But when exactly is the best time to use your aircond – during the day or at night – if you're trying to save on electricity bills? This guide explores aircond energy consumption trends, electricity tariffs, and money-saving tips for Malaysian households.
Understanding Aircond Energy Consumption
Air conditioners work harder during the day due to higher ambient temperatures. However, nighttime usage can also be significant depending on room size, temperature setting, and model type (inverter vs non-inverter).
Key Terms:
kWh (Kilowatt-hour): Unit for measuring energy consumption
EER (Energy Efficiency Ratio): Higher EER = better energy efficiency
Electricity Tariff Structure in Malaysia
Malaysia uses a tiered tariff structure under Tenaga Nasional Berhad (TNB):
Tier 1: 0 – 200 kWh (RM0.218/kWh)
Tier 2: 201 – 300 kWh (RM0.334/kWh)
Tier 3: 301 – 600 kWh (RM0.516/kWh)
Tier 4: > 600 kWh (RM0.546/kWh)
Electricity is charged based on total monthly usage, not time of use, which means day or night consumption costs the same per unit under residential rates.
Day vs Night Usage: Which Costs More?
While electricity unit cost remains the same, aircond energy use varies:
Daytime:
Higher outside temperatures force aircond to work harder
More people at home = more room use
Nighttime:
Lower ambient temperature = less strain on aircond
Longer continuous runtime (e.g., 8 hours overnight)
Conclusion:
If usage time is equal, daytime may consume more electricity due to heat.
But total consumption matters more than time of day for cost.
Factors That Influence Aircond Electricity Consumption
Room size
Temperature setting (every 1°C lower increases energy use by 6-10%)
Inverter vs non-inverter models
Filter cleanliness
Tips to Reduce Aircond Bills in Malaysia
Set temperature to 24°C - 26°C
Use inverter aircond for energy savings
Schedule regular aircond servicing
Turn on fan mode during cooler nights
Install smart timers
Ensure proper insulation & shading
Did You Know?
Airconds can consume up to 40-60% of a household’s electricity bill in Malaysia. Regular servicing can improve energy efficiency by up to 15%.
Real-Life Example
In Petaling Jaya, a family noticed a 20% drop in electricity usage after switching from a non-inverter unit to a 1.5HP inverter aircond and setting the timer to switch off 1 hour before waking up. Regular maintenance also contributed to the efficiency.
FAQ: Aircond Usage & Cost
Q: Does aircond cost more to run during the day or night?
A: Daytime usage may consume more energy due to external heat but electricity cost per unit is the same.
Q: How often should I service my aircond?
A: Every 6 months or quarterly for frequent users.
Q: What’s the ideal aircond temperature in Malaysia?
A: Between 24°C and 26°C for comfort and efficiency.
Q: Are inverter airconds better?
A: Yes, they adjust speed based on temperature, saving 30-50% energy.
Conclusion
Aircond electricity usage depends on various factors including ambient temperature, aircond type, and usage duration. While night-time may seem cheaper, managing your overall consumption and keeping your aircond efficient is key to lower bills.
Ensure your aircond runs at peak performance with our professional servicing team. We offer:
Filter cleaning & chemical wash
Inverter & non-inverter maintenance
Installation & troubleshooting
Service available across KL & Selangor
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