Safety and Quality Features that you should look out for before buying a water heater

  1. BIS / ISI mark : The basic requisite for accepted safety and quality standards 
  2. Warranty on tank and  Heating Element and Full Product
  3. PRV / NRV - 2-in-1 pressure and Non Return valve : Ensures positive and negative pressure is not created inside the tank 
  4. Thermostat for Auto Cutoff at 60-70 degree so you can use a mixer to control the output of cold water.
  5. Thermal Cut out / Thermal Plug and Semi return device- a fail safe device to prevent dry heating which acts if the temperature reaches 110 Degrees.
  6. Copper Heating Element / GLASSLINE HEATING ELEMENT - for hard water use as scaling in hard water areas inside the unit is common 
  7. PUF insulated tank : Heat Retention is longer - BEE Ratings based on this point.
  8. Magnesium or Aluminium Anode Rod for absorption of excess salts in the water.
  9. BIS APPROVAL is most important factor so that in terms of energy consumption you don’t land up paying more on electricity BILLS.
  10. Check for BEE Label too . ( BEE has Rated brands which state the standing loss of a water heater ). Look for 3-5 star rating.
  11. Most Important  : Outer Body - IPX4 Coating Usually Matt Finish Coating over a Metal Body Water Heater OR ABS Body


Look for a product that can be serviced easily square shaped water heaters usually have the heating elements in the centre which is an advantage over cylindrical models. all products with isi have standard heating elements which are available everywhere.