Hmm ... part true .. part excuse
I would think ... weight wise the difference between an aquatec and the pump i posted above must only be a kilo or so , not a huge lifting obstacle to most .
Space wise ... there is space , dont give me that
Power wise ( i think this is their main issue ) The heater element ( listed in parts on their site ) is 2.75kw which is about 11.5 amps , so they ony have a legal 1 amp or so for the pump to utilize to keep the machine a one corder .
The pumptec would be 2-3 amps .
But really , if their is demand for a bigger pump they should adjust to accommodate what the customer wants , as an option anyway ...either drop the heater element to 2400w or so .... or do what Ashbys do on the 6.6 machines ... put the immersion heater on a detachable cord and let the customer choose if they want to use it or not .
The 'rapid heat ' is still a mystery as like the bigger pump there is no spare current for an extra electrical thing .... and there is no vacs in the pump section for a passive heat ex-changer ... unless they run the water from the pump machine through the vacuum unit ...