| A10.
Because this type of water heater heats the water as you use
it, the volume of hot water that it can deliver is directly
correlated to the amount of its energy input. The bigger the
burners or heating elements in the unit, the higher the volume
of hot water that it can deliver. Today tankless water heaters
come in various sizes to suit most homes’ needs. Even
if you need to be operating multiple showers at once, tankless
water heaters can keep up (see Sizing Guide to choose the
right model for you).
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