Is your air conditioner (AC) causing your TNB bill to spike? You’re not alone. In Malaysia’s tropical climate, the AC is often the biggest electricity consumer in a home. But how much does it actually cost per hour, per day, or per month?
This 2026 guide cuts through the confusion. We’ll provide clear cost estimates, a simple calculator you can use, and—most importantly—8 actionable tips to significantly reduce your bill while staying cool.
Understanding the Core Cost: TNB’s Tiered Tariff (2026)
First, you must understand how you’re charged. Tenaga Nasional Berhad (TNB) uses a graduated tariff block system. This means the more electricity your entire household uses in a month, the more you pay for each additional unit (kWh).
| Domestic Tariff Blocks (2026) | Rate (sen/kWh) |
|---|---|
| First 200 kWh (1 – 200 kWh) | 21.8 sen |
| Next 100 kWh (201 – 300 kWh) | 33.4 sen |
| Next 300 kWh (301 – 600 kWh) | 51.6 sen |
| Next 300 kWh (601 – 900 kWh) | 54.6 sen |
| Next 901 kWh onwards | 57.1 sen |
Why this is important for your AC:
If your AC usage pushes your total consumption into a higher block, its effective cost per hour increases.
AC Electricity Cost Calculator & Estimates
Let’s answer the most common question: “How much does aircon cost per hour in Malaysia?”
The short answer: A typical 1HP aircon costs between RM0.20 to RM0.50 per hour to run, depending on its efficiency and your tariff block.
Use this simple formula to estimate your own cost:
(AC Wattage / 1000) x Hours Used x TNB Tariff Rate (RM/kWh) = Estimated Cost
Example: A 1HP, 900W non-inverter AC used for 8 hours at the 51.6 sen/kWh rate.
(900W / 1000) = 0.9 kW
0.9 kW x 8 hours x RM 0.516 = RM 3.72 per day, or about RM 112 per month.
For a quick reference, here are estimated monthly costs for 8 hours of daily use:
| AC Type & Size | Estimated Monthly Cost (8 hrs/day) |
|---|---|
| 1.0 HP Non-Inverter (3-Star) | RM 90 – RM 140 |
| 1.0 HP Inverter (5-Star) | RM 45 – RM 90 |
| 1.5 HP Non-Inverter | RM 130 – RM 190 |
| 2.0 HP Non-Inverter | RM 180 – RM 280+ |
Key Takeaway: Switching from an old non-inverter to a modern 5-star inverter AC can literally cut your cooling bill in half, making it a smart long-term investment.
8 Actionable Tips to Slash Your AC Electricity Bill
1. Choose the Right Temperature (24°C – 26°C):
Every degree you raise your thermostat can save about 3-5% on cooling costs. 24°C is optimal for comfort and efficiency in Malaysia.
2. Embrace the ‘Dry’ Mode:
In our humid climate, the “Dry” or “Dehumidify” mode removes sticky moisture without overcooling, using significantly less energy than full “Cool” mode.
3. Use a Fan with Your AC:
A ceiling fan allows you to set the AC temperature 2-3°C higher while feeling just as cool, as it circulates the chilled air effectively.
4. Seal the Room:
Ensure windows and doors are closed. Cool air escaping forces the unit to work non-stop, wasting massive amounts of electricity.
5. Invest in Professional Maintenance:
A dirty aircon with clogged filters and coils has to work up to 30% harder. Regular professional AC servicing is not an expense; it’s an investment that keeps your unit running at peak efficiency and prevents costly aircond repairs down the line.
6. Consider a 5-Star Inverter Upgrade:
If your AC is over 10 years old, a new 5-star inverter model is the single most effective way to reduce your bill. The higher upfront cost is recouped through electricity savings in just a few years. Check our guide to buying an air conditioner in Malaysia to make an informed choice.
7. Fix Problems Immediately:
Is your AC short-cycling (turning on/off every few minutes), leaking water, or not cooling well? These are signs of a fault that drastically increases power consumption. Don’t ignore them—seek professional aircond repair immediately.
8. Use Timers Wisely:
Don’t cool an empty house. Use your AC’s timer to turn it on 30 minutes before you get home, not leave it running all day.
Frequently Asked Questions (FAQs)
Q: How much does 1 kWh cost in Malaysia in 2026?
It depends on your total monthly usage due to the tiered tariff. The rate starts at 21.8 sen/kWh for the first 200 kWh and can go up to 57.1 sen/kWh for usage above 900 kWh.
Q: Is it cheaper to leave the AC on all day or turn it on/off?
For short absences (under 1-2 hours), it’s slightly more efficient to leave it on at a higher temperature (e.g., 28°C). For longer periods, turn it off. The myth that restarting uses more energy than running constantly is false for modern ACs.
Q: How long does it take for an AC to pay for itself in savings?
A new 5-star inverter AC can save RM 50-100+ monthly compared to an old 3-star model. With a price difference of ~RM 1,000+, it can “pay for itself” in energy savings within 1-2 years.
Q: My landlord charges RM 0.55/kWh. Is this fair?
If your total household usage is high (pushing into the >600 kWh blocks), this rate is plausible under the TNB tariff. However, a fixed rate above RM 0.57/kWh is likely inflated. Always ask for a copy of the TNB bill.
Q: Where can I see transparent pricing for maintenance to keep my unit efficient?
We believe in honest pricing. You can view our standard rates for aircon servicing and chemical cleaning on our aircon service price page. Regular maintenance is your #1 defence against high bills.
Conclusion: Smart Habits + Professional Care = Maximum Savings
You can’t control the weather, but you can control your bill. By combining the smart habits listed above with regular professional care, you ensure your air conditioner runs as efficiently as the day it was installed.
If your unit is old, inefficient, or constantly needing fixes, it’s likely burning money. Let ACfix help you achieve real savings. From expert repair and maintenance to professional installation of new, energy-saving units, we provide honest advice and lasting solutions for homes across Kuala Lumpur and Selangor.
Stop guessing and start saving. Contact us today for an efficiency consultation or a transparent quote.