You could easily knit a sweater from that dust bunny

The main issue here where that the systems normally run 24 hours 7 days a week.

On many occasions the system would over heat because of no air circulation.

There is also a fire risk which is the last thing you need in a cardiac intensive care ward!

Ouch! That can happen to our GE CICs in less than six months! The rate of lint build-up is directly proportional to the rate beds are changed in the ward! Keep your PC off the floor!