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HomeRepair HelpKelvinator Central A/C RepairKelvinator Central air conditioner not blowing enough Repair
Kelvinator Central air conditioner not blowing enough
If your Kelvinator central air conditioner has weak airflow, start with the evaporator coil and air filter. A dirty evaporator coil, clogged filter, or restricted blower wheel can reduce airflow and cause the evaporator coil to freeze, leaving the AC not blowing enough air. Next, inspect the blower motor. A failing blower motor may not circulate cooled air through the home; with power disconnected, check whether the blower wheel turns freely, but electrical continuity and power tests require caution. Make sure every register is fully open, then check the blower motor wiring. Most blower motors have multiple speeds, and incorrect wiring can produce low airflow even when the filter, coil, and ducts are clear. Dust or debris on the blower wheel and housing can also restrict air movement, so clean them carefully with a soft brush or compressed air without bending the fins. Shut off power before servicing, and have a qualified technician handle 240V wiring, motor connections, or airflow sizing. Refrigerant and sealed-system repairs require EPA 608 certification. Enter your Kelvinator model number to find the exact replacement air filter, blower motor, or blower wheel for your central air conditioner.
01 - Dirty Evaporator Coil
Proper air flow is critical for the central air conditioner to work properly. The evaporator needs sufficient air flow to keep the condensing water from freezing. If the evaporator coil, air filter or blower wheel gets clogged, air flow will be reduced causing ice to start forming on the evaporator coils, eventually freezing them up. It is recommended to replace the air filter at least every 6 months or sooner depending on the conditions. Refer to owner's manual for air filter replacement frequency recommendations and for evaporator coil cleaning instructions.
Highly Likely
02 - Kelvinator Central Air Conditioner Blower Motor
Since the furnace's blower motor is the component that circulates the cooled air through the home's venting, a defective blower motor will result in the central air conditioner not blowing enough. You can use a multimeter to test the blower motor for electrical continuity, a continuous electrical path present in the motor, as well as determine if power is reaching the motor. You can also try turning the blower wheel by hand. If the wheel does not turn freely, it's likely the motor bearings have seized and the blower motor will need to be replaced.
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Highly Likely
03 - Register is Closed or Only Partially Opened
Some air registers have adjustable louvers that allow the air flow to be restricted or shut off entirely. This would be used to cut off the air flow to a room that isn't being used, or to restrict air flow to one room so more air will flow to the other rooms. If there is low air flow, check that the louvers are fully open.
Highly Likely
04 - Blower Motor Improperly Wired
Most central air conditioner blower motors have multiple speeds. Central air conditioners require higher speeds to move sufficent air throughout the home for cooling. If the blower was wired incorrectly it may not be moving enough air to properly cool the home. If the air filter and evaporator coil are clear and the air ducts are sealed properly but there is still not enough air flow, the blower may be wired incorrectly. Proper air flow is determined by several factors: the design of the duct work, the size of the home, and the size of the unit. A service technician may be required to determine if the air flow is sufficient for the home.
Highly Likely
05 - Kelvinator Central Air Conditioner Blower Wheel and Housing
Over time the blower wheel and housing can become clogged with dust and debris. This will restrict the air flow, preventing the central air system from blowing enough. You can try cleaning the blower wheel with compressed air or with a soft bristle brush. Use caution when trying to clean the blower wheel as the fins are sharp and can be easily damaged. If the blower is damaged it will need to be replaced.
Common
06 - Clogged Blower Wheel
Over time the blower wheel can become clogged with dust and debris. This will greatly affect the air flow circulating throughout the home. You can try cleaning the blower wheel with compressed air or with a soft bristle brush. Be sure to shut off power to the unit before attempting to clean the blower wheel. Use caution when trying to clean the blower wheel as the fins are sharp and can be easily damaged. If the blower is damaged it will need to be replaced.
Common
Frequently Asked Questions
Why is my Kelvinator central air conditioner not blowing enough air?
How do I test a central AC blower motor that is not moving enough air?
Can a clogged blower wheel or evaporator coil cause weak airflow from AC vents?
Why is my AC blower wired incorrectly or running at the wrong speed?
How do I find the correct Kelvinator central air conditioner blower motor or blower wheel?
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