Since I don't do HVAC work for a living I though that I would turned to the more learned folks on this site to ask a question....

I see Desuperheaters used on Geothermal HVAC systems. Why couldn't one be installed (option) for regular HVAC systems? I would think it would help remove the heat better and use some of that heat to preheat/heat DHW (especially down in the south).

Just a thought ....