Mine in the Challenger has been on for almost 2 years and it hasn't generated much heat. The area behind the fridge is open to the inside of the coach (behind the wardrobe) so there is some air circulation.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054