1 OXYGEN SENSOR to Protect your family from any mis-happenings while using Surya Gas Geyser other Gas Geysers never have this feature. 2 All parts of Surya Gas Geyser made according to Standards other Gas Geysers do not Follow this. 3 HEAVY DUTY TANK(0.45mm Sheet ) which give long life to your Geyser and more heating to you other Gas Geysers will use 0.26 mm Sheet. 4 WIDER AND BIGGER DIAMETER PIPE (11mm) of Heat Exchanger Which give you really hot water & big flow of Water, other Gas Geysers use 7.96 mm pipe. 5 MORE LENGTH OF COPPER PIPE(3200 mm) which makes your machine more efficient and give more hot water in same Gas, other Gas Geysers use only 2200 mm Pipe Length. 6 WIDER BURNER (260MM) which makes gas burns completely and due to this it does not produce Carbon mono oxide, other Gas Geysers use 220 mm normally. 7 WORLD BEST QUALITY SOLENOID (A class) to give you proper regulation of gas and increase safety other Gas Geysers use D Class. 8 TRULY ORIGINAL PARTS to almost three times the life of your Geyser. 9 MORE FENCES OF COPPER(75Nos.) to increase the Contact surface area which makes the machine 95 % efficient other Gas Geysers use only 52 fences.