Do they have a certain life time? My trailer is 13 yrs old and when I was in South Dakota in June is was chirping. It is in the bed area in the nose. The windows were open and a fan going. Then a couple of weeks ago it went off again. It was real hot in the trailer and those windows were shut, others were open tho. It is hooked up to electric but no gas is on, it's parked at the house. I opened the windows and turned on a fan to get some circulation in there.. Do they wear out?
carbon monoxide alarms
