My suggestion would then be to look at Ditek's line of AC power surge supressors. Check this one out:
https://www.ditekcorp.com/product-details.asp?ProdKey=24 I have used them before in a pinch where a building ground was difficult to reach and they seemed to do OK. No failures, but I can't vouch for them. We may have just dodged a bullet. It does give you a "feel-good" place to run your system's ground to. There's still no substitute for a true building grounding electrode, as in a building frame member or copper water pipe.
As for the noise on CO lines, somebody is blowing "noise" at you. All systems must be able to operate in a normal environment without this concern or they wouldn't be FCC approved. The cabinet ground received from the third prong of the electrical plug is more than enough to provide a sufficient ground connection.
