14/08/2026
4 pumps in a Singapore home — they are not interchangeable.
1. Booster — weak shower on upper floors
2. Transfer — moves water from tank to tank
3. Ejector / sewage — waste water, often airlocks
4. Sump — basement / pit flooding
Wrong pump = noise, no pressure, or sewage backup.
Send a photo of the nameplate. We diagnose first, then repair vs replace.
WhatsApp 8151 8857
aot-pump.com
Reply PUMP + photo of the label.