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Old 11-15-2007, 04:19 PM
Location: Cary, NC
27,018 posts, read 48,208,888 times
Reputation: 24972


This is the rusted out heat exchanger in a furnace. Those holes in the heat exchanger can allow Carbon Monoxide and other combustion gases to enter the house.
Major safety hazard, and major inefficiency wasting fuel.

If you have a furnace that is more than 6 or 7 years old, it is worthwhile to have a licensed HVAC company service and inspect it prior to heating season.
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Old 11-16-2007, 06:53 AM
Location: The Garden State
522 posts, read 1,390,985 times
Reputation: 1503
Thanks for the reminder Mike.
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Old 11-16-2007, 07:51 AM
Location: A little suburb of Houston
3,702 posts, read 14,951,775 times
Reputation: 2012
I came home from vacation recently and found my hall ceiling soaked. This turned out to be an AC problem. While the tech was checking out the AC, he also checked the heater and found a 10 in crack in the heat exchanger. He literally fixed it so I could not turn the heat on. Needless to say, I had the whole system AC and heat replaced. I also figured that the leak may have been the cause of my illnesses late last winter/early spring which I went to the doctor numerous times for. Felt fine when spring warmed up. The HVAC tech said that my habit of leaving a window cracked probably saved my life.
I encourage everyone to get their systems checked regularly.
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Old 11-16-2007, 09:00 AM
176 posts, read 956,342 times
Reputation: 123
I am on a maintenance contract with my HVAC company. They do a check up once a year.
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Old 11-16-2007, 09:54 AM
781 posts, read 3,338,721 times
Reputation: 263
Another life saving tip......use a Carbon Monoxide Detector. We have two...one upstairs and down and they simply plug into an outlet (with a battery backup) and it sends a beeping signal if it detects any CM in the air.

Top 5 Carbon Monoxide Detectors - Best Buys for Carbon Monoxide Detectors (http://lungdiseases.about.com/od/buyersguides/tp/top_codetectors.htm - broken link)
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Old 11-16-2007, 10:20 AM
Location: Philaburbia
29,615 posts, read 51,030,192 times
Reputation: 48370
I have a 30-year-old furnace (which is not getting replaced until it dies!) ... along with a maintenance contract and CO detectors on each floor!
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Old 11-16-2007, 10:41 AM
204 posts, read 661,779 times
Reputation: 107
Have furnace checked and serviced annually and have detectors.
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Old 11-16-2007, 06:42 PM
23,372 posts, read 33,807,765 times
Reputation: 30324
Last spring
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Old 11-16-2007, 07:12 PM
Location: Sometimes Maryland, sometimes NoVA. Depends on the day of the week
1,501 posts, read 9,942,775 times
Reputation: 1069
Just had our furnace (oil) done on Oct 30. Nov 9, the ignitors went out, and now they say we need new electrodes, too

We've been busy sealing our exposed ducts with mastic to reduce air leaks, then we are insulating the ducts in unheated areas
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