Chemdrys UK head office was just down the road from me until the sold up,
the 'centre of excellence' was also there, when they moved the guy that did the training for all their franchises set up a carpet cleaning business in Beverley ( Allan might know Him Ron Rookledge)
we sometimes speak and he's a decent bloke who obviously knows his stuff....... but he uses a prochem Bravo to clean, which if I'm right is a single vac 100psi machine,
so if chemdry really believed what they say about HWE would there training guy use this machine?