As an FYI, having the covers off may help your airflow and temperatures, or may make it worse.
I have a Christie (this is a pro model, not consumer) that I use for events-- getting it to run long enough without the covers to do optical adjustments (something required fairly frequently since it bumps around in the back of a truck on the way to events) is a challenge. It overheats in 5-10 minutes and shuts down to protect itself. I have others that would happily run all day without any of the plastics.
Do realize if you do this you will be getting greater amounts of dust into the optics and electronics, so be sure to get the dust out of everywhere periodically. Dust in power supplies and such trap heat and cause problems.