No hot water? Make some.

I'm amazed how people can feel panicky when there's no hot water from the tap.

Ofcourse you have to find out why there's no hot water.

• When there's an open flame, it might need to be ignited again.
• When it's a closed system, you might be able to push a button and restart the system.
• (closed system of heating and hot water) When that fails it might help to put the required temperature down at your thermostat, have the temperature drop and then put the required temperature up. That restarts the heating system and might start the hot water too.
• When that doesn't help, it's probably the pump that's not working well.

To get hot water, simply boil water.