Here's one I did ealier today using hwe. Pre vac, presprayed with prochem fabric prespray, 8min dwell, lightly agitated, then extracted with Prochem fibre and fabric rinse. Light mist of prochem odour fresh. Blowers on. 1 x chair + 1 x 3 seater. took 1hour 10 mins and was dry when i left.
(http://www.thecarpetcarenetwork.co.uk/images/Sofa_Cleaning.jpg)
I prefer HWE. Find it does a more thorough job.