You can try a plug-in noise filter, but it may be problematic if the pump is outside with an in-use cover. May work at the laptop receptacle. I'm listing a cheap one as an example - they can get expensive. https://www.amazon.com/X10-XPPF-Plug-Noise-Filter/dp/B0002M5OJI/ref=asc_df_B0002M5OJI