The crack you only see when it's hot - Video

Some heat exchanger cracks only open when the metal is hot. Here's why years of heating and cooling can crack steel.

Full case file: The Furnace Worked Fine. The Family Got Sick.
https://youtu.be/C9-0NlgMxEc

If a CO alarm goes off or everyone feels sick at home: get everyone outside, then call 911 or your gas utility from outside. Don't look for the cause yourself.

#shorts #hvac #furnace