ADVICE: Hot water all white and cloudy, just had boiler fitted!

[CornishTeaTime]

Had a new combi boiler fitted yesterday. Today hot water is literally white and cloudy and smells abit.

Do I need to get engineers back?

Smells of what?
If you pour some in to a glass and let it cool, does it gradually go clear?

There's just some air in there. Nothing to worry about, it'll clear as you use the water.

Yes they said air and it would clear

No, you don't ned engineers, just run a cold water tap until it runs clear.

That was the advice an engineer gae me, its residue from the pipes.

Its the water in the hot tap not cold