John
whilst i see you point, its a tad unfair to suggest 'they get a job in Tescos', speaking as an ex checkout worker from Tesco (tho it could have been anywhere) where i worked whilst starting my cleaning business. Its that thinking that made some of the customers the bumholes that they were...after all i'm sure you wouldnt want people 'knocking' your staff (well i hope not).
Anyway, i agree, in the industry it is known that hot water is not really anymore effective (and indeed can harbour the drying process dependant on what cleaning product is used).
That said, if the client is insisting on it, and it's not going to affect the cleaning process, then i suppose its up to the cleaning company to decide if they want to/feel its safe to oblige.
What stood out to me from the original post was the comment about dry sweeping the floor before mopping...in a surgery i would have expected a dust-mop to be used, not a broom (unless by sweeping it is meant that dust-mop is used)?
Bertie