Oil furnaces are a popular heating system in De Pere, WI. They deliver energy-efficient warmth and consistent comfort. But like all heating systems, oil furnaces require annual maintenance to ensure they operate reliably. Certain parts sometimes need replacement to prevent unexpected breakdowns.
Oil Filter
The oil filter takes on the role of removing impurities, sludge, and other debris from the fuel before it reaches the burner. The filter helps prevent blockages and nozzle damage, allowing the heater to operate efficiently. But over time, the oil filter can become clogged. And when this happens, the heater must work harder and use more energy. You may notice poor combustion, soot buildup, and residue on the burner assembly. A new oil filter ensures the heater receives clean fuel, so your heating equipment can work efficiently.
Burner Nozzle
This part controls the spray pattern and flow rate of the oil as it comes through the combustion chamber. It operates under extremely high pressure and constant heat. As a result, it tends to wear out fast, and its spray pattern becomes less precise. Small amounts of buildup on the nozzle tip can lead to major problems with fuel delivery. The burners may even shut down if the restriction becomes severe enough. A technician can replace the nozzle annually to make sure the system has proper spray patterns and flow rates.
Pump Strainer (Fuel Pump Screen)
The oil pump has a pump strainer inside of it that filters out contaminants before they reach the burner. But much like the oil filter, this part can become clogged with dirt, sludge, and other debris. Signs of a clogged strainer include delayed ignition, short cycling, and weak heat output. Doing a quick replacement of the strainer will keep the pump operating as it should. This task is vital to prevent the pump from overheating or failing prematurely.
Thermostat Batteries (if Applicable)
Always replace your thermostat batteries at least once a year. This way, you can help ensure the device can always work optimally. You don’t want the batteries to go dead right in the middle of a snow or ice storm.
Fuel Filter Cartridge
Some oil furnaces have an additional fuel filter cartridge. Its job is to serve as an extra layer of protection against contaminants. The additional oil filter traps fine particles that slip through the main oil filter. When the cartridge clogs, it loses its ability to maintain proper fuel flow. Red flags to watch for include weak flame output, poor combustion, and frequent shutdowns. Replacing the cartridge once a year is an easy way to keep the system running smoothly.
Combustion Chamber Liner
The combustion chamber has a liner in it that protects the interior walls of the furnace from extreme heat. However, as you use the furnace more often, the liner may start to deteriorate. When it develops cracks and gaps, it can no longer protect the metal housing from the intense temperatures. Replacing the liner requires removing the burner and accessing the chamber. Our team will consider the severity of the damage to decide whether it’s time for an update. Many oil furnaces need this part replaced annually to maintain safe and efficient combustion.
Air Filter
If your oil furnace connects to a central air system, it has an air filter that needs regular changing. Dirty air filters that cause restricted airflow make furnaces work harder. They also worsen indoor air quality instead of helping it. If you don’t change the filter every one to three months, it can raise your energy costs. When replacing this filter, ensure you match the correct size and MERV rating for your heating equipment. You don’t want to use a mismatched filter because air resistance issues can worsen.
You may need to do more frequent air filter changes if any of the following apply to your home:
- Multiple household pets
- Recent home renovations
- Family allergy concerns
- High indoor dust
- Frequent furnace usage
Burner Gaskets
Your oil furnace has burner gaskets that create airtight seals. When they come loose, they leak air and sometimes create combustion problems. High heat and vibration can also cause the gaskets to crack. Replacing the worn gaskets annually will ensure your heater performs reliably throughout the entire winter.
Oil Line Filter Gasket
The oil line filter on the furnace also has a gasket that must always have a tight seal. When this part becomes loose or wears out, the oil may leak around the filter assembly. Signs of a failing gasket include reduced fuel pressure, burner lockouts, and poor combustion. Performing a quick replacement of this part will prevent fuel seepage, so you don’t have to worry about safety hazards or system damage.
Parts That Need Annual Inspections
Oil furnaces have several other parts that benefit from annual inspections. A technician can determine whether these components need replacement or repair.
Igniter Electrodes
The oil inside the furnace needs a spark to ignite, and this is the job of igniter electrodes. The tips on these parts can wear out and become coated with carbon, which makes it harder for the furnace to start. Our team can examine each electrode to determine which ones need replacement.
Ignition Transformer
This component supplies high voltage to the igniter so it can create a proper spark. When it becomes weak due to wear or electrical issues, you may notice the furnace struggles to ignite. We’ll test the voltage to see whether it’s delivering the correct output. When a reading falls outside of the acceptable range, this means it’s time for a replacement.
Flame Sensor (Cad Cell)
This part keeps an eye on the burner flame to make sure it operates safely. If it detects no flame, unstable combustion, or unsafe burning conditions, it automatically shuts down the system. Because dirt and soot can cause issues with the sensor’s ability to read the flame, an annual inspection is crucial. If we see signs of buildup or corrosion, we’ll know to clean or replace the sensor.
Blower Belt
Oil furnaces using belt-driven blower systems sometimes experience problems with the blower belt. Most belts will last about five to seven years before they begin to stretch or crack. We can check the blower belt for tension and wear to determine whether it’s contributing to any blower malfunctions. If it is, we’ll replace it.
Blower Motor Capacitor
This component helps the motor start correctly and maintain the proper speed. When the capacitor becomes weak, the blower may make a humming noise or fail to start. We can spot and replace worn capacitors before they cause issues through annual inspections.
Healthy Home Heating & Cooling LLC is here to answer any questions you have about oil furnace maintenance. We specialize in HVAC installations, repairs, and tune-ups for all makes and models. We’ll make sure your home has energy-efficient heating and cooling year-round. Call Healthy Home Heating & Cooling LLC today to book professional oil furnace service in De Pere.
