Pondering this question, here is my opinion. ETI charges US$600 for the option. The components can be purchased elsewhere for about US$200. If I can find a local RV shop that has experience with the system and will install it for roughly $400 (or less) in labor, I'm way ahead because if it doesn't work right I can take it back to the local shop and expect them to make it right. If I buy the option from the ETI factory and it doesn't work right, I have the grief and aggravation that some of the folks posting on this thread have had.
I'm confused why ETI is not paying for the repairs to be done by a local repair shop. Is your trailer not under warranty right out the gate. If a component wasn't installed correctly and tested before shipment, that's on ETI, it shouldn't be on the customer to pay for/ fix themselves. I understand if a component they installed fails you'd have to go through warranty process for that manufacturer but is kind of sounds like some of these issues are related to installation, ie. ETI



