How we calculate
Data
- Specifications, filter part numbers and replacement intervals come from manufacturer websites, manuals and official stores. Each page lists its sources and the date they were checked.
- Prices are shown only with the date and the shop where they were seen.
- Values that appear only on third-party pages are marked or left out.
Filters
Brands state replacement intervals under different assumptions: hours per day, fan mode, or cigarettes per day. When a brand states its daily hours, we rescale the interval to your hours (default 8 h/day). Otherwise we show the interval as stated and say so.
Yearly filter cost = filter price × 12 ÷ interval in months.
Electricity
An appliance's running cost is how much it adds to your TNB bill. That is not simply its kWh times one rate, because of how the domestic tariff works:
- Energy, capacity and network charges add up to 44.43 sen per kWh (up to 1,500 kWh a month).
- The Energy Efficiency Incentive takes 25 sen off every kWh for homes using up to 200 kWh, tapering to 0.5 sen at 1,000 kWh. Using more shrinks the rebate on all your kWh, so each extra kWh costs more than the headline rate.
- Homes at or below 800 kWh a month pay no fuel adjustment (AFA), retail charge or service tax (temporary threshold until 2026-12-31; 600 kWh before September 2026). Above it, AFA (3.67 sen/kWh for 2026-09), RM10 retail charge and 8% service tax apply.
- A 1.6% renewable energy fund levy (KWTBB) applies above 300 kWh.
We compute your bill with and without the appliance, averaged over ±50 kWh around your usage. The resulting cost of one extra kWh:
| Home uses about | Extra kWh costs |
|---|---|
| 300 kWh/month | 44.0 sen |
| 500 kWh/month | 50.7 sen |
| 700 kWh/month | 51.7 sen |
| 900 kWh/month | 57.1 sen |
| 1200 kWh/month | 52.8 sen |
Model pages use 500 kWh a month and also show 900 kWh.
Our reading where TNB does not spell it out: AFA and KWTBB are applied to every kWh of a non-exempt month. KWTBB is 1.6% of energy + capacity + network − incentive + AFA. Service tax is charged on the share of usage above the threshold. Under the alternative reading (tax on the whole bill) the result differs only for homes near the threshold.
Tariff: TNB Domestic General tariff (Peninsular Malaysia), effective 2025-07-01 to 2027-12-31. Source: myTNB, checked 2026-10-06.