You must choose the capacity of your water heater to best suit your application and type of usage. The climatic condition of your city should also be factored into your choice. Below details will help you to decide the right capacity to buy.
APPLICATION CAPACITY (IN LTS) INLET WATER TEMP. >20 CINLET WATER TEMP. <20 C
Kitchen 1 L or 3 L Instant 6 L or 10 L
Bathroom 15 L / 25 L / 35 L or Above
Shower panel 50 L / 70 L or Above
Bathtub/Jacuzzi 100 L or Above*
Assuming two people bathe consecutively without reheating time.