Furnace heat exchanger

[buffalobo]

They usually just check for CO and then red tag it or shut it down and tell you to call an HVAC company.

They don't determine what's causing it, just whether its coming from the vents, or flue pipe, or furnace burner compartment, etc, etc.

This was where I was headed. Tough time to get shut down then have scramble to get repaired during busy season and sub zero temps.

[newracer]

This was where I was headed. Tough time to get shut down then have scramble to get repaired during busy season and sub zero temps.

Even worse time to die from CO poisoning.

[buffalobo]

Even worse time to die from CO poisoning.

Exactly, freeze or asphyxiate =

[stenz]

The furnace works great. I just had it cleaned because we are thinking of selling the house. I purchased a new CO alarm a few days back so now we have 2 in the house.

[MBsnow]

Replace. For the time & labor involved. I'd go with a new unit. UNLESS that unit is under warranty.

I second. If its producing CO then you will have to replace. You typically need a bore scope camera of some type in order to see any cracks, as the heat exchanger is not easily accessible. Thats why when guys say there is a crack without digging into the unit or seeing CO production on a meter, they are trying to sell you a furnace under false pretenses.

Stenz- I am curious. How old is your unit?

[stenz]

I second. If its producing CO then you will have to replace. You typically need a bore scope camera of some type in order to see any cracks, as the heat exchanger is not easily accessible. Thats why when guys say there is a crack without digging into the unit or seeing CO production on a meter, they are trying to sell you a furnace under false pretenses.

Stenz- I am curious. How old is your unit?

The tech showed me on his hand held camera/scope. The unit was built in 1997.