A broken furnace can really become annoying, especially when it breaks down in the middle of the biting cold of the chilly winter season. There can be many reasons for a furnace to break down. However, failure of the heater exchanger is one among them.
A furnace heat exchanger is susceptible to developing problems and issues because of which it might stop working. However, before we proceed further in our blog, let’s answer the question, what is a furnace heat exchanger?
A furnace heat exchanger, present in your furnace right now, acts as a metal shield between the combustion chamber and the blower. Its main objective is to dispense heated air from the furnace right to your home.
So How Does a Furnace Heat Exchanger Function?
To provide you with a warm and cozy environment in your home, a furnace heat exchanger mixes cold and heated air. This enables the heat transfer for the furnace to attain a state of equilibrium. Because of this exchange, the presence of cold air increases and hot air reduces temperature making the temperature warm.
For the unversed, most efficient furnaces have two heat exchangers – a primary as well as a secondary heat exchanger. The main furnace heat exchanger is located near the burners of the furnace. The flame coming from the furnace subjects the heat exchanger to immense heat.
Your main furnace heat exchanger only makes the furnace 80% efficient. On the other hand, the secondary heat offers more heat from the flue gas forcing the water vapor to turn into liquid which further releases latent heat into the secondary heat exchanger.
Because of this process, the furnace ends up becoming more efficient. Please note that the secondary furnace heat exchangers are made from stainless steel, owing to which it is easily able to withstand heat, moisture, and even acid.
Why Furnace Maintenance and Repairs are Critical for Heat Exchanger Performance
Regular furnace maintenance is crucial for keeping the heat exchanger functional and your home safe during the winter months. A neglected heat exchanger can lead to efficiency loss, frequent breakdowns, and even dangerous carbon monoxide leaks. Investing in professional furnace tune-ups not only ensures the longevity of your system but also saves you from costly repairs.
Components of a Furnace Heat Exchanger
Just for your knowledge, the following are the primary components of a furnace heat exchanger:
- Shells
- Tubes
- Spiral tubes
- Plates
- Fins
- Adiabatic wheels
Usually, furnace heat exchangers are made from two systems – the tube system and the coil system. Both these systems connect to the burner as well as the flue pipe. They can also be made from plate exchangers which are constructed of very thin and corrugated plates. This is done to make way for the gas to flow easily, conjoined by robust welding.
Precaution and Care for Your Furnace Heat Exchangers
Note that the furnace heat exchangers must always be sealed. This will ensure zero leakage of gases like carbon monoxide and other flue gases. Needless to say, regular furnace maintenance and timely furnace repair are critical to ensuring that your heat exchanger operates safely, efficiently, and lasts for many years.
Below is a detailed blueprint and breakdown of care practices for the furnace heat exchanger:
1. Schedule Routine Inspections and Tune-Ups
Over time, furnace heat exchangers become subject to wear and tear, including the risk of cracks, corrosion, or debris buildup. Scheduling routine furnace maintenance can prevent issues before they escalate into major furnace repairs.
2. Clean Air Vents Regularly
Dirty vents restrict airflow, causing the system to work harder and potentially overheat. Overheating can stress the metal components of the furnace heat exchanger, leading to cracks and reduced efficiency.
3. Replace Air Filters on Schedule
Air filters trap dust and other particles, preventing them from entering the furnace heat exchanger. Over time, clogged filters impede airflow, forcing the system to overwork and increasing the likelihood of component failure.
Proactive furnace maintenance, including timely filter replacements, reduces the risk of costly furnace repair services caused by airflow issues.
How to Know If Your Heat Exchanger Has a Problem
If your furnace’s heat exchanger is malfunctioning, there are a few warning signs to watch for. One noticeable issue might be a strange odor in your home, often described as similar to formaldehyde. This smell could indicate improper combustion or the release of harmful gases into your living space.
Another red flag is the buildup of soot, which can accumulate in air filters and around the burners. Soot often results from dirt in the system or uneven fuel combustion.
Ignoring these signs could lead to complete system failure or costly repairs. Calling a furnace repair expert immediately can save your system from further damage.
In a Nutshell
Having a good quality furnace heat exchanger is necessary, especially during the winter season. Without a good quality furnace heat exchanger, your furnace practically amounts to nothing.
Thus, it is always a good idea to schedule furnace maintenance at regular intervals and seek prompt furnace repair services whenever necessary. Keeping your heat exchanger in top-notch condition will not only ensure a warm and comfortable home but also peace of mind knowing your system is safe and efficient.
