The Kleenrite Edge 2 as Mike has said is great when it’s working; one of the best high performance extractors in the market, the pre-heat option is a godsend on trashed pub/club carpets. I agree servicing can be laborious with this machine, but the plug and go connectors help. You need to work on the vacs with the machine on its side and an assistant certainly helps. The in-line heater is a little more complex, as you can change either the thermostats or element depending on fault, or the complete unit.
You do however have to remove the pump motor assembly to service or replace the Pumptec pump. Which means removing the vac motors for better accessibility.
It’s worth putting together a toolbox to suit your specific machine i.e. long reach screwdrivers, socket sets and an assortment of open-ended and ratchet spanners, mole grips etc. It makes a world of difference in time and aggravation.
Also a magnetic pick up tool is useful for lost screws, nuts and washers.
Ask the manufacturer for recommended spare parts as well. Parts wear, so my advice is service regularly.
Also descale regularly and I prefer to use liquid cleaning agents with these plunger pumps over powdered products, which can clog the ports and valves.
Since 1994 I have owned quite a few high-performance extractors ranging from 300 psi-1000 psi. The easiest so far to work on and service has been CFR.
I think your currently spoilt for choice at the moment with the number of high performance portables in the market place. So I would look at ease of use, build quality, performance-what do you need, can I run longer hose lengths without the need to take it upstairs etc, accessibility for service and repair. Have a few demonstrations and then make your mind up!
Regards
Steve