Why is the filtered water coming out hot/warm?

It is quite likely that the reverse osmosis (RO) filter has become clogged due to an accumulation of scale deposits from waste water. This situation often arises when the filter is not properly maintained or when the water quality is poor. To rectify this issue, you will need to purchase a new RO filter and undertake the descaling process to restore the unit's efficiency.

To effectively reduce the impact of waste water scale deposits on your RO system, it is crucial to adopt a proactive approach by regularly emptying any remaining waste water from the tap tank before you proceed to refill it. The water that remains in the tap tank is typically laden with highly concentrated contaminants that have been filtered out of your tap water. In fact, the concentration of these contaminants in the leftover water can be as much as six times greater than that of the water that flows from your kitchen faucet. If this contaminated water is not discarded, it can lead to a much faster accumulation of scaling within the unit, which in turn necessitates more frequent descaling sessions. This is particularly important for individuals residing in areas characterized by hard water, as they may find themselves needing to descale their RO system more often to maintain optimal performance.