Three parts to cleaning, Heat, Agitation, and Chemicals, of you use less of one, you need more of the other. So microsplitters work on the principle that the chemical is good enough not to need heat. I sometimes use microsplitters, but for resuraunts I use a hot enzyme, and the machine heater (portable), boosted with Magma heater.
Most portys have some sort of heater, you can fill the tank first, let it heat up while you move furniture, prespray agitate, let it dwell etc. Then upgrade over time.