Chiller/Heater

[becky913]

Are there combination units that both heat and chill? Any information on chillers would be greatly appreciated. I am clueless about them. I have a 92 gallon corner reef tank.
Thanks!
Becky

 

[helpme74]

Prime Mini In-line Chillers has the heater plug on the back of them

But there not a combination unit it just runs the heater form the chiller