Which Instantaneous Water Heater Do I Need?

Instantaneous water heaters do exactly what they say; they provide (almost) instant hot water. Although not as popular as storage-type water heaters, they are, however, becoming more known to commercial and domestic users. An instantaneous water heater has a dynamic range of positives and negatives, and a lot of customers often get confused about what it takes to install/use one of these heaters.

Instantaneous water heaters are great if customers are limited on space, as they don’t store any water. The lack of storage also means that there is no risk of the water cooling. As the water is heated when you need it, it also means you only pay for what you use.

One thing to think about when considering an instantaneous water heater is that they have a high kilowattage. They start around 3kW for an ES3 (a simple hand wash unit), and can rise to 12kW (DEX12) with single-phase electricity; anything higher than that will require 3-phase electricity.