I've never heard of 'condensing' using heat so you'll need to explain this process to me.
The only methods I have heard of for hash either involve knocking the thrichomes off using friction (for example rubbing over a screen), lower temps below 4%C so the thrichs solidifie and fall off leaf (i.e. ice/bubble extraction), or waashing the THC off using a lipid substance which THC IS soluble in (i.e.butane extraction)..... None of these involve heat.
Post me a link to something explaining the condensing method and I'll read it.