What is Pressure rating?
Pressure rating (bar)
How much water pressure the tank can take.
Short answer
If you're above the 5th floor or use a booster pump, insist on 8 bar.
Pressure rating when buying a water heater (geyser)
How much water pressure the tank can take.
Why it matters: High-rise buildings and pressure pumps need 6–8 bar rated units; standard 4 bar can burst or leak.
Look for: If you're above the 5th floor or use a booster pump, insist on 8 bar.
Full Water Heater (Geyser) buying guide