No question, your carpet cleaner needs first rate equipment. But he also needs something else. He needs the skilled at operating that equipment. Many companies own hot water extractors, but very few companies learn how to use them properly. The best way to know that the carpet cleaner is trained is to make sure the cleaner has been certified by City & Guilds In Cleaning Science. This is the same level of education that any building tradesman would have.
In my view, every carpet cleaning company should be fully accountable for its work. And if you aren’t pleased with the job in every way, you shouldn’t have to pay for it. Period. Not all carpet cleaners offer a guarantee. Or, if they do, the guarantee may be “limited.” Ask the carpet cleaner if he offers a money back guarantee.
Any carpet cleaner can say anything about his past jobs. And, sadly, some of what he says may not be true. Make sure you ask for references or read comments from current customers so you can depend on the carpet cleaner and his work. or even better what we do is show you images of our past work.
City and guilds in cleaning science is the same level of education that any builder might have so you can be sure your dealing with a professional. Many certifications are no more than one day courses with multiple choice questions at the end of the day.