Dont tell me coway is good la, from my experience in my office unit it really dam headache. The so call RO dispenser with hot and cold water after not being used for few days (over weekend) the water will have some kind of smell (like burning smell), change filters twice, and boiler still the same problem. Now claim because is incoming water issue. Than I questions isn't RO have no such issue? 3months now, let see what kind off excuse they give next month.
Coway is a very good filter from Korea that use reverse osmosis (RO) to filter water. RO water is mainly use in manufacturing process or dialysis water for dialysis purposes. It is not recommended for long term drinking purpose as it will cause osteoarthritis (knee pain).
You can see them mainly used in airport, hospital or honda service center as it provides hot and cold function for the convenient.
Another advantage is water with improve clarity and smell, however, it doesn't contain beneficial mineral, very slow water output, doesn't remove bacteria and viruses and will waste a lot of water.
If you just want hot and cold function, you need not pay rm2500-3000 for that, just get a thermal dispenser cost less than rm80 to solve the hot function, and ice cubes from your fridge will give you cold water.
Water filter is an expensive investment, need to choose it right one time, rather than choose it because it is cheaper.
My family and my in laws have been using espring filter for 5 years.
We need water filter because
1) convenient (no need to boil water after filter)
2) safe (remove all health hazardous contaminats including organic contaminants persticides, herbicides, inorganic contaminants like MTBE, VOC, heavy metals, pharmaceuticals drugs by products and all water borne bacteria and viruses.
3) cost-efficient