Many people think that they need a bigger hot water tank because their hot water finishes so quickly however, by simply turning up the heat on their hot water tank they can use less water,
making their hot water stretch further. Problem solved! Here's how to adjust the temperature on your hot water tank:
Remove the cover with a small coin or a flathead screwdriver.
You will see the insulation, carefully lift it to get to the adjuster behind it.
Using the small coin or the flathead screwdriver raise the temperature. Some hot water tanks carry two elements so you'll have to raise the two.
Remember to raise the temperature a little at a time to avoid accidents.
Replace the insulation, as well as the cover.
Screw back the cover using the small coin or the flathead screwdriver.