Loading…
Loading page
Same-Day Aircond Installation & Servicing Across KL & Selangor — From RM199
Loading…
Free Instant Estimate
Estimate how much your aircond adds to your monthly TNB bill. Enter your HP, daily usage hours, days per month and your electricity rate (editable), and the calculator shows the estimated monthly cost in RM, energy used in kWh, and how much an inverter upgrade could save.
Free Instant Estimate
Estimate how much your aircond adds to your TNB bill — by HP, usage hours and your actual electricity rate.
TNB domestic average ≈ RM 0.509/kWh — edit to match your bill
Estimate uses typical rated power draw per HP (e.g. 1.0 HP ≈ 0.9 kW, 1.5 HP ≈ 1.2 kW, 2.0 HP ≈ 1.7 kW). Actual consumption depends on your model, age, thermostat setting, room size and maintenance condition. For the most accurate figure, check the wattage on your unit's nameplate or your TNB bill. A 1.0–1.5 HP unit running 8 hours/day typically adds RM 100–180/month.
Select your aircond horsepower (HP) — the calculator uses the typical running power draw for each size (e.g. 1.0 HP ≈ 0.9 kW, 1.5 HP ≈ 1.2 kW, 2.0 HP ≈ 1.7 kW).
Enter how many hours per day the aircond runs and how many days per month.
Enter your electricity rate. The default is the TNB domestic average of RM 0.509/kWh — check your bill and edit it for accuracy.
The calculator multiplies power (kW) × hours × days × rate to get the estimated monthly cost in RM and kWh.
The result includes a comparison tip: a dirty coil makes the unit run longer, and an inverter model typically cuts cooling electricity by ~35%.
Send the result to KL Renovator on WhatsApp if your bill seems high — a chemical wash or service often restores efficiency.
A 1.0 HP unit draws about 0.9 kW, 1.5 HP about 1.2 kW, 2.0 HP about 1.7 kW, 2.5 HP about 2.1 kW and 3.0 HP about 2.5 kW while running.
Airconds running 8 hours a day cost roughly twice as much as those running 4 hours. Thermostat setting also matters — every degree lower adds about 5–8% consumption.
TNB domestic tariffs are tiered from 21.8 sen to 57.1 sen per kWh. The RM 0.509/kWh default is a blended average; use the rate from your actual bill for precision.
A dirty evaporator coil and clogged filter reduce cooling efficiency by up to 40% — the unit runs longer to reach the same temperature. Regular chemical wash (from RM 120) keeps consumption at the rated level.
Inverter units typically use ~35% less electricity than non-inverter units. See the inverter savings calculator for monthly savings and payback period.
Definitions
Short, plain-language definitions of the terms used above — written by the technicians who do the work, not copied from a manufacturer brochure.
MEPS is Malaysia's Minimum Energy Performance Standards scheme, administered by the Energy Commission. Air conditioners sold here carry a star label — more stars means less electricity for the same cooling. The label is a comparison tool between models of the same capacity; it says nothing about how your unit performs once the coil is dirty or the room is oversized.
Read the star label together with the annual kWh figure printed on it — that number is what turns into ringgit on your TNB bill.
An inverter aircond varies compressor speed instead of switching it fully on and off. Once the room reaches the set temperature the compressor slows to a trickle rather than stopping, which holds the temperature steadier and avoids the heavy current spike of every restart. That is where the electricity saving comes from — it is a control difference, not a stronger cooling capacity.
Inverter savings only show up on units that run for hours at a time. A living-room unit switched on for 45 minutes will not pay back the price difference.
Dry mode runs the compressor in short low-fan cycles so the coil keeps condensing moisture without over-chilling the room. On a wet Klang Valley evening it can make a 25 °C room feel more comfortable than 22 °C on cool mode, at lower power. It is not a substitute for a dehumidifier in a damp store room, because the unit still stops once the temperature target is met.
Use dry mode on rainy evenings and keep cool mode for the hot afternoon — the switch alone shaves running hours off the compressor.
Side-by-side comparison
The honest answer depends on how many hours a day that particular unit runs.
| What to compare | Inverter | Non-inverter |
|---|---|---|
| Running cost, 8 h/night | Noticeably lower once the room is at temperature | Higher — full-power restarts all night |
| Short 30–60 min use | Little advantage | Perfectly adequate |
| Repair parts | PCB-dependent, dearer boards | Simple, cheap, widely stocked |
| Voltage-fluctuation tolerance | Sensitive — surge protection matters | More tolerant |
In short: Inverter for bedrooms that run all night; non-inverter is still the rational choice for a guest room or a shop that cools in short bursts.
A 1.0–1.5 HP aircond running 8 hours a day typically uses 200–290 kWh per month, costing roughly RM 100–180 at TNB domestic rates. A 2.0–2.5 HP unit running the same hours costs around RM 200–350. Actual usage depends on the model, thermostat setting, room size and how clean the unit is.
Multiply the unit's power draw in kW (e.g. 1.5 HP ≈ 1.2 kW) by daily usage hours, then by days per month to get kWh, then by your electricity rate (RM/kWh). Example: 1.2 kW × 8 hrs × 30 days = 288 kWh × RM 0.509 = about RM 147/month.
The most common causes: a dirty coil or filter forcing longer runtimes, a low-refrigerant system that never reaches temperature, thermostat set very low, an oversized or undersized unit, or an old non-inverter unit. A chemical wash (from RM 120) and service restore efficiency; upgrading to inverter saves ~35%.
Yes — inverter compressors run at variable speed instead of stop-start, which typically cuts cooling electricity by 30–40% in Malaysian conditions. For an 8-hour daily usage, a 1.5 HP inverter often saves RM 50–70 per month compared with an equivalent non-inverter unit.
TNB domestic (Residential) tariffs in 2026 are tiered: 21.8 sen/kWh for the first 200 kWh, 33.4 sen for 201–300 kWh, 51.6 sen for 301–600 kWh, 54.6 sen for 601–900 kWh and 57.1 sen above 900 kWh. Use your bill's effective rate (total RM ÷ total kWh) for the most accurate estimate.
Estimates are instant; the final price is confirmed before any work begins. No hidden charges, 1-month workmanship warranty, same-day service across KL & Selangor.