Does it take longer to bring a pot of hot water to a boil, than it does for the same amount of cold water?

Question

I heard this on a cooking show, but think it's false.

Answer 1

You are right - think about it: Does it take hot water or cold water longer to freeze? Hmmmmmm..... you need your own cooking show!

Answer 2

No, it takes less time for hot water to boil than cold water.

Answer 3

Warm water will boil faster than cold water.

Answer 4

That first answer has got to be the best answer.....I cracked up and laughed so hard.......My husband acts that way when I ask him questions too sometimes.........I thought I had the only one.....now I know there is more like mine out there.
Or maybe it is just the questions we ask.....too funny.
Hot water would boil sooner than the cold....but PLEASE use only cold water.....as the lead in the solder in the water pipes can have lead transferred by the hot water to your food then into you. Lead is bad enough for us lets not add to it....

Answer 5

never use hot water
it has many impurities from your hot water heater
don't believe me,cool some hot water in the fridge,drink,tastes different ,huh

Answer 6

Its false. Just FYI: Hot water from your facet has been sitting in your water heater for God knows how long. Don't cook with it. Use fresh, cold water for cooking.

Answer 7

I'm married to a scientist (chemist/physicist), and I once told him about this urban legend about cold water boiling faster than hot, and asked if it was true.
Then he started rubbing his temples.
And he put his head down on the counter and started muttering something I couldn't understand.
Then after he gained his composure he reminded me that water boils because its temperature is elevated to its boiling point. Cold water requires a higher temperature elevation than warm water does, and therefore will take longer to heat to boiling.