OEM Lennox HE300 Humidifier Control Board — Y5019
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The genuine OEM Lennox Y5019 control board powers the HE300 Healthy Climate / TrueEase whole-home humidifier, managing solenoid water valve operation, humidistat input, and blower interlock to deliver precise humidity to your Lennox system. This board coordinates the humidifier with your furnace or air handler so moisture is added only during airflow, protecting your equipment and comfort during dry heating months.
Common failure symptoms include a humidifier that won't run, no water flow to the media pad, continuous running that overflows the drain, no response to the humidistat, or a dead control with no indicator lights. Power surges, mineral corrosion, and moisture intrusion are frequent causes of board failure.
Why OEM matters: the Y5019 is calibrated to the exact voltage, valve, and sensor specifications of the HE300 platform. Aftermarket substitutes may misfire the solenoid or ignore blower interlock, leading to water damage or poor humidity control. Choose the factory-engineered replacement for correct fit and dependable, season-long performance in your Lennox humidifier.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days