Can I use an instant water heater for my bath tub?

The hot water output of an instant water heater is dependent on the flow rate of water.  If your bath tub fixture has a high flow rate (to fill the bath tub faster), the pooled water temperature might be inadequate.  Unless your instant water heater has a very high heating capacity, you might have to decrease water flow (and wait longer for the tub to fill) to get enough.  We recommend storage heaters for bath tub use.

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