honestly, get a TM or you be doing the work yourself, personally i rather MR "internal combustion" engine did it for me. a quick bit of energy/physics for you the max you get out of a household socket is 3000 watts thats about 7 hp and a half Horse Power, a prowler has 13hp, Don't care about how you maximise it with slippyer vacs or such you can't make it anymore , laws of physics don't change for carpets cleaners. So lets take a 18hp truck mount such as the Prochem Blazer which engine is 18500 watts rated load and it use the waste heat from the unrated exhaust all 15000 watts of it to generate hot water so in effect its around 30,000+ watts of power thats quite a lot more than 3000 and it means you don't have to work as hard at the wand, which incidentally is usually the same type.
As a company We brought our first TM into the business eight years ago, customers seamed to like it we though so we kept on going, but i was really apparent that customers always rang up after if we sent a portable the next time as they thought the TM did a better job, so we sent the TM and they were happy, hence I now have three TM and three portables sat in the shop.
I don't have them because "I" think they are great, I have them because my customers like them. if they like low moisture more i'd do that, just turns out they don't.
