I am using Hydro One. So far quite happy with it. You can set regular forward flush but need to do manual flush once a week (recommended). I don’t do back flush very often but that didn’t affect the performance much. This may dependent on the water quality of your area.
I can’t remember the price but you can check Xammax or on Shopee. They recommend chemical clean 1.5 year (RM200). Replace the filter membrane after another 1.5 year. Price probably 300-400 but i have not reached this stage yet.

This post has been edited by kuchaikway: Feb 11 2022, 07:13 PM