Why does my hot water take so long to get hot. This only happens in my bathroom and takes about two minutes before the water gets hot. I have a new hot water heater all new plumbing. Prior to this, my hot water only took about thirty seconds before getting hot.

Why does my hot water take so long to get hot. This only happens in my bathroom and takes about two minutes before the water gets hot. I have a new hot water heater all new plumbing. Prior to this, my hot water only took about thirty seconds before getting hot.
The reson is,
If we heated the water the water moleclus get the heat energy and the heat is transferred to the whole amount of water then starts to heet. This is the reason for the time delay. Then,
When the heat water flows the heat energy is transferred to atmosphere the atmosphere is in coll condition so it get the heat quickly . So the hot water becomes cool