The 19L28 is a specialized, high-performance FirstChoice condenser fan motor engineered specifically for the extreme conditions of commercial and high-efficiency residential HVAC systems. Functioning as the thermal "regulator" for your outdoor unit, this motor drives the fan blades to pull air through the condenser coil, managing the critical heat rejection process. This model is built to support Lennox and Allied series units that utilize an 8-pole motor design for ultra-quiet, high-torque performance. With its rigorous 70C (158°F) high-ambient rating, it is specifically designed to prevent thermal tripping in sun-drenched rooftop environments where standard motors fail.

Key Features

• Exact OEM Specification: The 19L28 is the direct factory replacement for catalog number 19L2801, ensuring 100% mechanical compatibility with existing factory motor mounts.
• 70C High-Ambient Endurance: Engineered with specialized insulation that allows continuous operation in temperatures up to 158°F, ideal for record-breaking summer heat.
• Quiet 8-Pole 825 RPM Design: Optimized for low-speed, high-volume airflow, significantly reducing backyard or rooftop noise pollution compared to 1075 RPM motors.
• Maintenance-Free Ball Bearings: Features permanently lubricated, double-sealed ball bearings designed to handle vertical-shaft-down loads without the need for manual oiling.
• Integrated Safety Monitoring: Built-in automatic reset thermal overload protection monitors winding temperature to prevent catastrophic motor failure during airflow obstructions.

Product Details

• Brand: FirstChoice
• Manufacturer: Lennox / Allied Air
• Part Number: 19L28 (19L2801)
• Weight: 15.4 lbs
• Horsepower: 1/4 HP
• Voltage: 208-230V
• Phase: 1 Phase (Single Phase)
• RPM: 825
• Ambient Temperature: 70C (High Ambient)
• Frequency: 60 Hz
• Frame Size: 48 Frame (5.6-inch diameter)
• Capacitor Required: 5 MFD / 370V (Sold Separately)

🛠️ HVAC Depot Pro Tip

"The 70C Difference"—Standard condenser motors are often only rated for 40C or 60C. When installing the 19L28, you are providing your system with a significant safety margin against the "thermal cycling" that occurs on hot afternoons. Always verify your fan blade is clean and balanced before attaching it to the new motor; a dirty blade causes vibration that can prematurely wear even the high-grade bearings in this 70C-rated unit. Finally, ensure you install a fresh 5 MFD run capacitor to protect the new windings from electrical strain.

Cross-Reference

• Direct Replacement: 19L2801, 100483-12
• Superseded / Legacy: 78M74, 78M7401, 100483-05
• Drawing / Factory Number: MOT19L28, 5KCP39SGM178S
• Equivalent Models: Emerson 1875, Genteq 3875

Model Compatibility

• Lennox XC13 (Suffixes: 036, 042, 048)
• Lennox XC14 (Suffixes: 036, 042)
• Allied 4AC13L (Suffixes: 36P, 42P)
• Concord 4AC13B (Suffixes: 36, 42)
• Lennox XP14 (Suffixes: 030, 036)

Shopify SEO List Items

1. Extreme Heat Reliability: The 70C rating ensures your AC stays running during the hottest hours of the day when standard motors fail.
2. Ultra-Quiet Airflow: The 825 RPM low-speed design provides powerful heat rejection with minimal operational noise.
3. Genuine FirstChoice Fit: Avoid the frustration of universal motors with a direct-fit 48-frame and standard 1/2-inch flat-edge shaft.
4. Commercial Grade Durability: Designed to meet the rigorous duty cycles of both residential and light commercial rooftop applications.
5. Simplified Installation: Uses factory-standard color coding and long lead wires for a quick, error-free setup.