Author: steveng Your Xtreme Heater is designed to move heat through forced air rather than radiate it from the case. The case should never feel hot to the touch and will not get hot enough to affect surrounding equipment. The more important point here is that you want the air from the heater to freely circulate in the engine compartment. It is for this reason that we suggest clearance from other items in the bilge. Was this answer helpful ? Yes (0) / No (0) How long will the heaters last? How do I install the heater with the quick release bracket?