Ann: PFAS Testing Update, page-64

I have just been cleaning the air conditioner because of a water leak. I was looking at all the coils of copper, so decided to look up the effect of ozone on copper piping...

"As O3 it is highly caustic and corrosive, especially when combined with water. Consequently, ozone in copper pipes and galvanized metal pipes will actually eat away the pipes and the fittings. Stainless steel parts, special ozone-resistant fittings, and plastic pipes are the best ways to plumb for ozone."
http://www.enviroalternatives.com/wwozone.html

"Eat away the pipe and fittings"... OK so I don't want ozone near my air conditioner... so 'next' PO3???

Ozone is a harsh oxidizer and copper oxidises, so why would anyone use ozone in the cleaner...