Cost calculator
What will it actually cost you?
Pick a horizon and one or more models — every line below is computed from this site's dataset, not typed in by hand.
Assumptions
- Prices are the brand's standard published price, as last verified — promotions are excluded.
- Filter replacements =
floor((months − 1) ÷ replace_interval_months), applied per filter over the chosen horizon. - Servicing adds the brand's published annual fee × (months ÷ 12), when one is published.
- Usage-independent: the schedule assumes the brand's stated replacement interval, not your actual water usage.
- A filter with no published price or interval is excluded from the subtotal and the total is marked incomplete (†) rather than guessed at.
Full formula and sourcing rules: /methodology.
Horizon
Models — select one or more
Coway AIS
| Line item | Unit price | Replacements | Subtotal |
|---|---|---|---|
| Purchase price | — | — | S$3,088 |
| No consumable filters listed for this model. | |||
| Servicing | — | — | Not published |
| Total over 60 months† incomplete — Excludes no filter or servicing prices published. This total is a minimum — the real cost is at least this much. | — | — | S$3,088 |
Excludes no filter or servicing prices published. This total is a minimum — the real cost is at least this much.