QUOTE(viruz @ Jun 24 2018, 06:24 PM)
Hi all sifu, need recommendation here.
My house renovation is completing soon, now it is time to choose my water filter.
1. Last time I use the big sediment filter (those like a gas tank, some ppl called it rocket) which is cheap and available in most local hardware shop. It is good or should I change to a better one? How about 3M outdoor filter mentioned in this thread?
2. Indoor water filter + dispenser, last time uses RO, then switch to non-RO, all assembled by local technician using don't know what cartridges. Now in this thread I read about Aquaphor system, is it good? How about those famous Korean brand like Cuckoo, Coway, which are much much expensive but besides nice looking design on dispenser, the filtration technology basically same with cheaper brand?
3. On the dispenser, I saw a Korean brand called Filken with their tankless dispenser system where it is able to make water cold or hot while the water passing through their internal system, but it come with 3 stages filters and cost more than RM5k.
Please help me to choose which filters should I use.
1. "Rocket" or media or sand sediment filter can filter to 40 micron. Cartridge (3M or what we offer) can filter to 5 micron. Cartridge does not require backwash and has minimum pressure drop (1-2 psi). Cartridge can last 2-3 years and some can be washed (not 3M though), media also required to be changed every 3 years or so. Call me biased, but I would take cartridge any day over media, except when water quality is very bad or when free standing "rocket" is the only system that can be installed, because it is free standing. Cartridge housing needs to be attached to the wall.
2. Filtration in dispenser with built in filter type (Coway Cuckoo) will always be inferior to proper filter + dispenser. These systems make sense when you do not care much about money, you pay per month, someone comes, cleans it for you, replaces cartridges etc. It will cost you about 1200RM per year or so, minimum I think is 2 years. Aquaphor, Fresca, 3M would cost you from 1000 to 2000 up front (depends on the brand and seller) plus roughly 350RM for cartridges per year (more in case of 3M). Advantage is that you own the system, not just renting it. You can connect coffee machine, ice machine, dispenser, can wash fruits and vegetables and so on. Dispenser with filter is just that, dispenser.
3. Real Korean dispenser system, made by Hyundai with NSF filters can be easily bought for roughly 2500RM. 5K is... well 2x the price. I admit that tankless is good, since almost no , but over 5K is probably too much for it. If you virtually have unlimited budget, then can get this and just replace internal system with external one (again similar to Aquaphor) and get the best combo.
As for which system, if you want to drink directly from the filter, then you better get one that removes bacteria. You had RO before, so you're probably used to highest quality drinking water. Nowadays can get tankless RO for reasonable price too, let me know if you're interested.