and packaged rooftop units

Is this transformer a direct replacement for 5H71956-2

Always replace with the exact HH19ZA170 (170-Open/130-Close) rating

making it suitable for steam and high-temp water systems

By replacing a standard Selectrastat

Amana-Goodman 2921303S Heat Exchanger 319847-401 and packaged rooftop unitsRestore the efficiency and safety of your furnace with the Amana Goodman 2921303S Heat Exchanger. This high performance 3 Cell OEM Heat Exchanger is a genuine factory authorized replacement designed specifically for Goodman and Amana HVAC systems. Engineered for superior thermal transfer, this part ensures your gas furnace operates at peak fuel efficiency while maintaining strict safety standards. By replacing a cracked or compromised secondary heat