RO systems refill slowly by nature: the membrane produces water at a low rate, so drawing several litres and expecting immediate replacement is unrealistic. Genuine slow-refill faults come down to feed pressure, a fouled membrane or a tired tank.
Changing the cartridge stages is reasonable owner maintenance with the feed isolated and the pressure released. Anything involving the membrane, the tank charge or the drain line is a technician job, and hard water shortens membrane life no matter how careful the maintenance is.
Key Features
- Under-sink reverse osmosis system documented in the GE filtration line
- Multi-stage cartridge and membrane arrangement
- Pressurised storage tank with a dedicated faucet
- Filter-change indicators on later revisions per the manual
Most Common Issues on This Model
Slow refill after drawing a jug of water
Taste complaints when the post-filter is overdue
Fittings weeping after a cartridge change
Membrane life cut short where the feed water is very hard