What is ISI mark & gas efficiency?
IS 4246 certification and thermal efficiency percentage.
Short answer
Look for the ISI mark stamped on the body, not just on the box.
ISI mark & gas efficiency when buying a gas stove & cooktop
IS 4246 certification and thermal efficiency percentage.
Why it matters: Certified stoves burn cleaner and use less LPG per meal.
Look for: Look for the ISI mark stamped on the body, not just on the box.
Full Gas Stove & Cooktop buying guide