[Pritcher]

It could most probably benefit from a good cleaning. Dust and dirt on the inside components is like wrapping them in a sweater and it can reduce cooling by blocking airflow.

If you're comfortable with opening it up, and if that won't violate the warranty, then break it down and clean it up. If you can't open it up then do the best you can to clear the airways with q-tips and buy a can or two of compressed air to shoot through it.