I found out the hard way to have a CO detector whether you have a heater or not. My 2007 22' had a hard wired detector from the factory. I thought about disconnecting it since I didn't have a heater. First trip out I was cruising slowly with the cabin closed. There was a slight stern wind. I definitely felt tired and drowsy when the alarm went off. To begin with, I thought it was the engine so switched everything off; but still screaming. As soon as I realized the problem and opened the cabin, it shut off. Needless to say, the detector stayed and I always kept a breeze blowing in. It would have been a Bummer to die on your first trip!
G.P.
G.P.