Do you hear a buzzing noise coming from your furnace? It’s not uncommon to hear a buzzing noise from a furnace, but it can be concerning when you don’t know the cause.
Various issues can cause buzzing noises, so you must identify and address the source as soon as possible to avoid further problems and hefty furnace maintenance costs. Here are the following reasons behind these buzzing noises and how to fix them:
- Malfunctioning Transformer Box
The transformer box is a small, rectangular box that you can find near the furnace. It is typically composed of a metal casing and contains several components, including a primary and secondary coil and a capacitor. It is an integral component of the heating system as it serves as the power source for the furnace and helps regulate the voltage.
If your transformer box suddenly produces an unusual buzzing sound, this could mean several things, such as:
- the wiring could be loose or corroded,
- the capacitor could be malfunctioning, or
- the transformer box itself could be damaged.
In any of these cases, contact a technician to assess the situation and determine the best action.
- Defective Capacitor
One part of your furnace maintenance is to check your capacitor and see if it is working properly. In case you don’t know, the capacitor’s primary function is to store electrical energy and release it in short bursts to help start your furnace’s motor. Aside from that, it also helps regulate the current flow in the circuit.
Now, if you suddenly hear a buzzing sound from your furnace, it’s most likely that your capacitor is defective. Suppose your capacitor has gone bad. You should turn off the unit immediately and call a professional HVAC technician. After all, a defective capacitor can damage the whole unit and cause safety hazards in your home.
- Loose Air Ducts
The air ducts in your furnace carry air from the furnace to the different parts of your home. If the air ducts are loose, air will escape, leading to a decrease in air pressure and a decrease in the efficiency of your furnace. This can cause your furnace to run longer and increase your monthly energy bills.
As such, this will also create an unusual buzzing sound, especially if the ducts vibrate against each other. To fix this, tighten the loose connections and ensure that the ducts are properly sealed. You should also call a professional HVAC technician to inspect your system if the problem persists.
- Inadequate Blower Motor
The blower motor is essential to your furnace maintenance because it is responsible for circulating air through the ducts and into your home. If the blower motor is not powerful enough, it can cause the furnace to run longer and produce weird buzzing noises.
In this case, you should have the motor checked by a professional to make sure it is running at the right speed and is the right size for your furnace. If the motor needs to be replaced, you should have it done as soon as possible to avoid further damage to your system.
Final Thoughts
Buzzing noises in furnaces can be caused by several reasons, from faulty parts, such as the blower motor, loose wiring, and even a clogged air filter. That’s why you need a qualified technician to investigate the problem before attempting to repair it, as some of these issues can be dangerous if not handled properly.
Always On Green Home provides reliable and cost-efficient furnace maintenance in Brooklyn to help ensure your system runs efficiently and safely. Get a free quote from us today!