Very few, if any, furnaces with a typical small crack or hole in the heat exchanger show elevated levels of carbon monoxide. The same is true for heat exchangers. Its function is to transfer heat between fluids to either cool a building down or to heat it up. Furnace Indoor Blower. If your gas furnace is about that age, the chances are high that the heat exchanger can crack. Presence of Carbon Monoxide. So don't take any chances with visual analysis. It is a process that begins when combustible gas increases the temperature in the heat exchanger. Each of our techs has the knowledge and experience to service your HVAC system correctly. This is because, since the heat exchanger is situated in the middle of the furnace, the entire furnace must be disassembled in order to replace the heat exchanger. How and Why Heat Exchangers Fail. In case you are still interested chasing little heat exchanger cracks, read "How Not to Find Cracked Heat Exchangers". Here's what you can do to protect yourself.
Water began to leak out of the factory seam in about ten different places, but the crack never leaked. Residential 80% furnaces made in the last 30 years with air-conditioning coils on the discharge (outlet) of the furnace do NOT allow carbon monoxide to enter the indoor air stream. Do You Really Have a Cracked Heat Exchanger? So what's the big deal with cracks or holes? This number is printed on the ratings tag (where the model and serial numbers are) and is used by technicians to make sure that the proper amount of air is moving through the furnace. Primary Heat Exchanger. Furnace carbon monoxide can also cause frequent health symptoms, such as sleepiness, disorientation, nausea, irritations of the eyes and nose, and other issues similar to flu. What causes a cracked heat exchanger? This unusual odor can cause health issues like severe headaches. Cracked Heat Exchanger Causes. This happens when carbon accumulates on your furnace interior. When your furnace is not getting enough air flowing into it, the furnace will overheat.
Depends on the velocity of the gas moving through the burner tube. Many HVAC contractors find "cracked" heat exchangers using visual analysis and use the results to recommend furnace replacement. Change in the flame appearance. Often this is a repair that is too expensive compared to replacing the whole furnace and while bringing it up to current code requirements. CO is produced as a result of incomplete combustion. With the majority of the cracked heat exchangers that I've seen, I've always been curious how the exhaust gas from the furnace could possibly leak out of those tiny cracks enough to contaminate the househouse air. Keep in mind, this isn't just a problem with Rheem, almost all manufacturers have produced tubular heat exchangers where this issue showed up. Birds are super sensitive to CO, so the miners would know if there were dangerous levels of CO in the caves if it affected the canary. On the Other Hand, here is a tubular heat exchanger problem that no visual inspection, even a camera on stick, would detect. Information was added to the CO article ["Hidden Problems Can Cause Carbon Monoxide, " October 10, page 10] that needs to be clarified. We guarantee the most competitive furnace repair and replacement costs in the area. Check to see if this is the case in your furnace. When that happens, the internal temperatures increase and then there is a high chance that the exchanger will become cracked. The combustion analyzer determines efficiency of fuel-burning appliances, by calculating the temperature and levels of oxygen and CO.
If the airflow in your heating system is quite slow, heat will build up in the system and cause it to break. Besides carbon monoxide, a cracked heat exchanger can also cause the leakage of gases such as sulfur dioxide and nitrogen dioxide. If you have any concerns with your equipment, make sure to call your local heating technician so you can have solutions as quickly as possible. A furnace flame should be blue in appearance. In some cases, these were big-name local HVAC contractors giving the faulty diagnosis.
We offer free, in-home estimates. Otherwise, the furnace can break down when the heat exchanger is still new. Hart Home Comfort offers quality heating and cooling services throughout the area. Many times, smaller cracks cause the burner flames inside the heat exchanger to waver back and forth and be blown against the inside of the heat exchanger. If you smell sulphur or rotten eggs at the furnace exhaust, have your furnace checked.
Schedule a service appointment with us today to receive a free, no-obligation, in-home estimate. The heat exchanger is designed to be heated by the burner flames while the furnace blower moves room air across the outside of it. You should be aware that you can expect pretty high labor costs when replacing this item, even if it is covered by the original warranty. But you probably have other combustion appliances, like water heaters. I've heard that penetrating oil, such as WD40, will get through the cracks, so I tried that next. This issue causes pressure changes that the heat exchanger cannot handle. Another reason why an exchanger may crack is because of control valves that have become worn out. Carbon Monoxide exposure causes headaches, drowsiness, dizziness, nausea, and breathlessness, as well as collapse and unconsciousness and problems with vision. Why Does a Heat Exchanger Crack? In order for this to happen, the furnace must be producing high levels of carbon monoxide AND the exhaust gas must be mixing with the household air.
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