But they heat up even when its a hundred degrees out. You can hear them heating up right after you turn on the ignition switch.Prolly to avoid icing of the carbs yes.
Remember when cars had a thermostat operated valve in the air intake to draw warm air from the exhaust manifold area in winter temps?
Mostly not a problem with down draft carbs as they heat from the engine, but updraft and sidedraft are more prone. It’s usually in a certain RPM range for the carb, and on a bike usually just causes reduced performance.I would never think of carbs icing in Houston lit alone in the summertime at sea-level. Our night time temps don't go as low as 70 in the summer.