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For contractors servicing older Honeywell or DeZurik heritage lines
These are standard-size valve cores designed to fit all industry-standard Schrader-style HVAC access valves and service ports
This is typically caused by a dirty flame sensor or a faulty gas valve
Optimized for 370V electrical systems
Lennox 72H02 Prefilter For contractors servicing older HoneywellThe Lennox 72H02 Prefilter is a critical OEM replacement air filter designed for high efficiency electronic air cleaners. As a veteran grade aluminum mesh pre filter, this component serves as the primary line of defense, capturing large airborne particulates before they reach the electronic cells or primary media. This configuration is essential for maintaining the MERV rating integrity of the system and optimizing overall airflow. Measuring
