1775 wrote:
...Progressive lets you send the unit to them to be put back to working order for a significant fee. Surge Guard tells you to buy a new one. ...
I had a Surge Guard go bad once (from water intrusion) and you're absolutely correct about the company telling me to buy a new one. So I did. I found a used Progressive Industries EMS on ebay. A few months after purchasing, it started acting up - reporting values off the charts and cutting my power quite frequently. After talking to Progressive, I mailed it back to them. They almost totally rebuilt it and mailed it back to me. My only expense was the shipping to them.