# Water filter change reminder on WhatsApp

> WhatsApp reminders to change water filters, AC filters and purifier cartridges on time, set once and repeated. 7-day free trial.

Source: https://www.getmindie.app/reminders/water-filter (updated 2026-10-31)

## Messages to send Mindie
- Every three months: "Every 3 months on the 1st at 10am remind me to change the water filter"
- AC filter: "On the 1st of every month at 10am from April to September remind me to clean the AC filter"
- Book the service: "Every year on 15 February at 10am remind me to book the water purifier service"

A water filter change reminder on WhatsApp is a message when a filter or cartridge is due for replacement. With Mindie, send "every 3 months on the 1st at 10am remind me to change the water filter" once, and you'll get it every three months.

Filters are invisible until they fail. A water filter past its life stops filtering, a clogged AC filter makes the AC work harder, and a purifier quietly loses effect.

## What to set

- **Water filter cartridges,** at the interval the maker gives.
- **AC filters,** monthly in the season you use it.
- **Purifier and appliance services,** once a year.
- **Fridge water filters,** usually every six months: say "every 6 months".

## Why filters get forgotten

- **No warning.** Most filters don't tell you they're spent.
- **Long intervals.** Three or six months is easy to lose.
- **Model numbers.** You need the exact one to reorder.

## Habits that help

- **Note the model number** of each filter in Mindie.
- **Order the replacement** when the reminder arrives, not when the old one fails.
- **Note the date you changed it,** so you know if the schedule is right.

## How Mindie handles it

Send each reminder once. Say "every 3 months" or "every 6 months" and Mindie repeats it on that gap.

## What Mindie doesn't do

- **It doesn't order filters** or book services.
- **It doesn't connect to appliances.**

## FAQ

### My filter lasts 3 months. Can Mindie repeat that?
Yes. Send "every 3 months on the 1st at 10am remind me to change the water filter".

### Can I set a monthly reminder only in summer?
Set monthly reminders with an end date for the season, or set yearly reminders for each summer month.

### Can I keep the filter model number?
Yes. Save it as a note, and ask for it when you reorder.

### Can I save where to buy the replacement?
Yes. Put the shop and model in the reminder, so it's in the message when you order.

### Should I order before the change date?
It helps. Set one reminder a week or two early to order, and another on the day to swap it.

## Related
- [Car service reminder](https://www.getmindie.app/reminders/car-service)
- [Bin day reminder](https://www.getmindie.app/reminders/trash-day)
- [Recurring reminders](https://www.getmindie.app/features/recurring-reminders)
- [How to Stop Forgetting Things: A Simple Capture and Cue System](https://www.getmindie.app/blog/how-to-stop-forgetting-things)