On the first generation models from 1997 to 2003 wikipedia says:
but I can't actually find hard evidence from Toyota either way. It looks like only around 1500 were ever produced between those years and very few were sold to consumers (328), most were fleet vehicles for California (with California weather). We do know for sure that all gen II models of the RAV 4 EV do have a PTC heater with the heat pump so either way the first gen wasn't adequate.
I was one of those 328, drove one for over 120,000 miles. It's possible my memory is faulty on the absence of a PTC heater. If it had one it must have been extremely tiny or the car practically never used it since there was no way to get fast heat out of car. It had heated seats so that saved the day (or rather the bottom). The car had a pre-climate option which was useful when it still plugged in. I don't recall the climate control pulling more power than I can attribute to a heat pump. I gave my service manuals away so I can't look things up. BTW high voltage heated windshield is very efficient both at defogging and amount of energy consumed. Main downside is expensive to replace.
The second generation (arguably a different generation because the drive train is practically all Tesla) most definitely has only PTC heating, no heat pump. A 2012 model is my daily driver.
arnold