PerfectWave Power Plant 5 Fan Behavior

[Elk]

This may be of interest:

Power Plant 5 Fan on Continuously and Getting Noisy

I’ve had my Power Plant 5 for about 8 years. Originally, what appears to be the cooling fan would only come on occasionally. Lately, it seems to be on all the time and the unit does seem to get warm. Issue is the fan seems to be getting noisier. Assuming that the noise is the fan, is that a replaceable item? It’s loud enough that I can hear it from about 7-8 feet away though music will mask it. Just worried it will continue to get worse.