Last summer several times when we had the air conditioner on and tool a shower about 30min to an hour after the carbon monoxide detector would go off. If we opened up the house it would not or during the winter it never goes off. We had someone come look at it and they had no clue what to do. they just ended up saying they house didn't have good air flow. We talked to the people who lived in the house before us and they said the same thing would happen. I really don't know what to do and we will be having a baby soon and want to fix this problem. Any help out there would be appreciated.