How terrible Puppy. Copper was the attraction, My Boiler has a chimney for the escape of all those fumes we alos have a Carbon dioxide alarm in boiler room.
To be honest I am sirprised my airconditioner is still there .I guess we live in a world that is foreign to most of us .
Take care and try to keep warm, we have snow today melting but one of these days it will stay.
Stay Cozy
Hugs
Selkie.