![]() ![]() ![]() As a result, air cannot pass through to be heated. As dirt and deposit accumulate, the air filter, blower, and coil become clogged. Over time, natural decay eats away at the metal, although deterioration is accelerated when proper cleaning is neglected. The reality is unless your HVAC system is well maintained, dirt, dust, corrosion, and rust will develop on many components, including the heat exchanger. Both of these airflow issues cause incomplete combustion and are indicators of cracks in your heat exchanger. Also, existing cracks in your heat exchanger can also create extra air in the combustion area, which can cause extra CO to spill out. In turn, excess heat causes your heat exchanger to crack. This makes the burners run hotter and longer. Restricted air flow can result from clogged air filters, blocked vents, and dirt buildup. Not enough air flow can cause incomplete combustion. A combustion problem in your furnace is a sign that you have a cracked heat exchanger.Ĭombustion problems arise due to airflow issues. If the combustion analyzer determines your appliance does not meet the manufacturer's specified level of efficiency, then you have a combustion problem. It can be used on boilers, heaters, furnaces, kilns, and engines. The combustion analyzer determines the efficiency of fuel-burning appliances by calculating the temperature and levels of oxygen and CO. ![]() ![]() Just because you may find a CO leak, that doesn’t mean it’s coming from your furnace - the source could be your water heater or stove! This is why a combustion analyzer is so important.Ī combustion issue in your furnace is a sign your heat exchanger is cracked. If your furnace stopped working, explore these common reasons for your furnace not turning on.Īs you know, potential CO sources are numerous. This is only the second best-case scenario the first-best option is to get annual furnace maintenance on your unit so that your technician catches the cracks before any issues can surface. It is important to note that this does not happen in every case of cracked heat exchangers. Depending on your furnace, it may shut off once a flame rolls out of the burner chamber, thanks to a safety detector called the flame rollout. An air leak in your furnace's heat exchanger could prevent the fire from burning in the firebox and blow it into the burner chamber. Look at it this way, if your furnace stops working due to a crack in your heat exchanger, consider yourself fortunate! The inconvenience of a broken furnace is nothing compared to the danger of a CO leak. We advise households with pets, small children, or elderly adults to use two carbon monoxide detectors. Elderly individuals, small children, and pets are especially vulnerable to carbon monoxide poisoning. Carbon Monoxide exposure causes headaches, drowsiness, dizziness, nausea, and breathlessness, as well as collapses, unconsciousness, and problems with vision. Pay attention if anyone in your home develops headaches or flu-like symptoms without a clear reason. In the worst-case scenario, your cracked heat exchanger could be leaking carbon monoxide, and your detectors fail to detect it. Household Members Experiencing Flu-Like Symptoms CO detectors have an expiration date, so if yours is over five years old, you should replace it. Seriously, do not ignore an alarm from your CO detector! The majority of CO detectors have a high limit before they go off, and many do not even go off at all. Normally, CO detectors sound an alarm at high volume. You should be aware that if your CO detector goes off, your unit is not only leaking it is probably releasing quite a bit of CO. You may hear the carbon monoxide (CO) detector go off. ![]()
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