Could a failing High-Efficiency Pleated Air Filter cause the BRYANT PREFERRED 16 (126B/226C SERIES) to have symptom: Ice On Coils Blowing Warm?

A fouled or excessively restrictive filter limits the mass flow of air across the evaporator coil, preventing the refrigerant from absorbing enough heat to remain above freezing. This results in the condensation on the fins turning to ice, which eventually blocks all airflow and causes the system to blow warm air as the heat exchange process ceases. This is the most common cause of evaporator icing in residential central air systems.

Could a failing Hard-Shutoff Thermal Expansion Valve (TXV) cause the BRYANT PREFERRED 16 (126B/226C SERIES) to have symptom: Ice On Coils Blowing Warm?

The TXV regulates the flow of refrigerant into the evaporator coil based on heat load; if the internal sensing bulb loses its charge or the needle sticks, it 'starves' the coil. This restriction causes a localized drop in pressure, lowering the refrigerant's boiling point below 32°F, which initiates rapid ice formation. Once the coil is encased in ice, the thermal exchange is insulated, and the supply air temperature rises to ambient levels.

Could a failing Indoor Blower Motor cause the BRYANT PREFERRED 16 (126B/226C SERIES) to have symptom: Ice On Coils Blowing Warm?

If the blower motor fails or the capacitor degrades, there is no forced convection to move warm house air over the cold evaporator coils. Without this heat load, the refrigerant remains in a liquid-vapor mix at extremely low temperatures, causing the coil to freeze any moisture in the air. The 'blowing warm' symptom occurs because the motor may be spinning at a fraction of its intended RPM or has seized entirely, allowing heat to soak into the ductwork.

What is the most likely root cause for a BRYANT PREFERRED 16 (126B/226C SERIES) with symptom: Ice On Coils Blowing Warm?

A fouled or excessively restrictive filter limits the mass flow of air across the evaporator coil, preventing the refrigerant from absorbing enough heat to remain above freezing. This results in the condensation on the fins turning to ice, which eventually blocks all airflow and causes the system to blow warm air as the heat exchange process ceases. This is the most common cause of evaporator icing in residential central air systems.

BRYANT PREFERRED 16 (126B/226C SERIES) Ice On Coils Blowing Warm

CONF	DIAGNOSIS	ACTION
96% CONF	High-Efficiency Pleated Air Filter A fouled or excessively restrictive filter limits the mass flow of air across the evaporator coil, preventing the refrigerant from absorbing enough heat to remain above freezing. This results in the condensation on the fins turning to ice, which eventually blocks all airflow and causes the system to blow warm air as the heat exchange process ceases. This is the most common cause of evaporator icing in residential central air systems.	VIEW ON AMAZON #CommissionsEarned
2% CONF	Hard-Shutoff Thermal Expansion Valve (TXV) The TXV regulates the flow of refrigerant into the evaporator coil based on heat load; if the internal sensing bulb loses its charge or the needle sticks, it 'starves' the coil. This restriction causes a localized drop in pressure, lowering the refrigerant's boiling point below 32°F, which initiates rapid ice formation. Once the coil is encased in ice, the thermal exchange is insulated, and the supply air temperature rises to ambient levels.	VIEW ON AMAZON #CommissionsEarned
2% CONF	Indoor Blower Motor If the blower motor fails or the capacitor degrades, there is no forced convection to move warm house air over the cold evaporator coils. Without this heat load, the refrigerant remains in a liquid-vapor mix at extremely low temperatures, causing the coil to freeze any moisture in the air. The 'blowing warm' symptom occurs because the motor may be spinning at a fraction of its intended RPM or has seized entirely, allowing heat to soak into the ductwork. SKU: HD44AE132	VIEW ON AMAZON #CommissionsEarned

// ENGINEER'S LOG

Forensic analysis suggests a failure in the heat-absorption phase of the vapor-compression cycle. The accumulation of ice indicates the evaporator's saturation temperature has fallen below the freezing point of water. This is a mechanical or airflow failure, not a scripted sequence. The 'blowing warm' symptom confirms that the system has reached a 'freeze-up' state where the ice has become a physical barrier to airflow, or the compressor has cycled off due to low-pressure safety limits, while the blower (if functional) continues to circulate unconditioned air. Recommend inspection of the air-handling interface and the refrigerant metering device (TXV).

DIY Repair Guide

Watch exactly how to replace the High-Efficiency Pleated Air Filter.

// NOTICE: This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.

PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.

INITIALIZING SWARM...

OPERATIONAL LOG

PARTSNIPER

BRYANT PREFERRED 16 (126B/226C SERIES) Ice On Coils Blowing Warm

DIY Repair Guide