Before purchase, please make a clear distinction between Below Inflow and Lateral Inflow to avoid unusable conditions. Big Under Bend, Small Under Bend, Big Lateral Bend, Small Lateral Bend. 3 to 5 seconds fast heat.
In general, to say at least, the temperature at about 20 degrees to 40 degrees in winter & 30 degrees to 50 degrees in summer, depending on the quantity of flowing water.