Aircon Blower Problem

Aircon Blower Replacement Cost | Installation & Repair

Updated - Wed, 25 Dec 2024

What is an aircon blower?

An aircon blower, also known as an air conditioner blower or simply a blower, is a component of an air conditioning system that is responsible for circulating air throughout the system. It is typically a motor-driven fan that draws in air from the surrounding environment and forces it through the air conditioning unit, where it is cooled or heated before being distributed into the desired space.

The blower plays a crucial role in the overall functioning of an air conditioning system. It helps to move air across the evaporator coil, where heat is absorbed from the indoor air, or across the condenser coil, where heat is released to the outside environment. By circulating air, the blower facilitates the transfer of heat, helping to cool or warm the air within a room or building.

How does the Aircon blower work?

The aircon blower works by drawing in air from the surrounding environment and moving it through the air conditioning system. Here's a simplified explanation of how it operates:

1. Air Intake

The blower pulls in air from the room or space through a grille or vent located on the unit's front or side. This air is usually at room temperature.

2. Filtered Air

Before entering the blower, the air may pass through a filter to remove dust, allergens, and other particles, improving air quality.

3. Blower Motor

The blower is driven by an electric motor, usually located inside the indoor unit or air handler. When the motor is powered on, it starts rotating the fan blades.

4. Airflow Generation

As the fan blades spin, they create airflow by pushing the air forward. The rotation of the blades creates a low-pressure area behind them, which draws air from the intake and propels it out through the outlet.

5. Heat Exchange

The aircon system has two sets of coils: the evaporator coil and the condenser coil. The blower helps in the heat exchange process by blowing air across these coils.
a. Cooling Mode: In cooling mode, the blower pulls warm air from the room over the evaporator coil. The evaporator coil contains a cold refrigerant that absorbs heat from the air, cooling it down. The blower then blows the cooled air back into the room.
b. Heating Mode: In heating mode (for systems that provide both cooling and heating), the blower draws in cooler air from the room and blows it over the condenser coil. The condenser coil contains a hot refrigerant that releases heat into the air, warming it up. The blower then circulates the heated air into the room.

6. Air Distribution

Once the air has been cooled or heated, the blower distributes it through the air conditioning system's ductwork or vents, delivering conditioned air to the desired space.

The speed of the blower can often be adjusted to control the airflow and achieve the desired temperature and comfort level. It is controlled by the air conditioning system's thermostat or through manual adjustments.

Where is the blower located?

The blower is usually located in the indoor unit of a split air conditioning system or within the air handler of a central air conditioning system. It is connected to a motor that drives the fan blades, enabling them to spin and create airflow. The speed of the blower can often be adjusted to control the volume of air being circulated, allowing for temperature and airflow regulation.

When to replace or repair an Aircon Blower?

The decision to replace or repair an aircon blower depends on several factors, including the severity of the issue, the age of the blower, the cost of repair versus replacement, and the availability of replacement parts. Here are some considerations:

1. Severity of the Issue

If the blower has minor issues that can be easily repaired, such as a loose connection or a worn-out belt, repair may be the most appropriate option. However, if the blower motor is completely burnt out or the fan blades are severely damaged, replacement might be necessary.

2. Age of the Blower

Consider the age of the blower when deciding whether to repair or replace it. If the blower is relatively new and still within its expected lifespan, repairing it might be a cost-effective choice. However, if the blower is old and nearing the end of its lifespan, replacing it could be a better long-term solution, as other components may also start failing soon.

3. Cost of Repair versus Replacement

Compare the cost of repairing the blower with the cost of a new blower unit. In some cases, especially if the repair is minor, repairing the blower can be more economical. However, if the repair costs are high or if multiple components need replacement, it might be more cost-effective to invest in a new blower.

4. Availability of Replacement Parts

Consider the availability of replacement parts for the specific blower model. If the blower is older or less common, finding the necessary parts for repair may be challenging or expensive. In such cases, replacing the blower with a new unit could be a more viable option.

5. Energy Efficiency and Performance

Upgrading to a new blower may offer improved energy efficiency and better performance compared to repairing an older blower. Newer models often incorporate advancements in technology and design that can enhance the overall efficiency and functionality of the air conditioning system.

6. Professional Assessment

It is recommended to consult a qualified HVAC technician or air conditioning specialist to inspect the blower and provide expert advice. They can assess the extent of the damage, evaluate the repair options, and offer recommendations based on their expertise.

Aircon Blower Replacement Cost

The cost of replacing an aircon blower can vary depending on several factors, including the brand and model of the air conditioning system, the type of blower required, and the labor charges in your location. Additionally, the overall cost may also depend on whether other components, such as the blower motor or fan blades, need to be replaced along with the blower.

As an estimate, the cost of a replacement aircon blower can range from $200 to $800 or more. This cost typically includes the price of the blower unit itself, which can vary based on the specific system requirements and the brand. Additionally, you may need to factor in the cost of any associated parts, such as the blower motor or fan blades, if they are not included with the blower unit.