Adobe After Effects Heat Haze Tutorial:

To make the heat haze effect was basically a 3 step process.

Firstly I created a layer of fractal noise that evolved over time using an expression. I then used this layer as a displacement map for my main piece of footage. This essentially created the wavering, blurry look of a heat haze.

The second step was creating the watery reflections you often see in the forground. For this i used a range of masks, scaling and blend modes, along with a bezier warp.

The final step was colour correcting to make the warm reds and oranges associated with shooting in hot conditions.

to download follow the links:

http://rapidshare.com/files/275579947/HeatHaze.flv