Our product features a heavy-duty aluminized steel, dual-diameter tubular heat exchanger, ensuring durability and efficient heat transfer for exceptional performance. The single-stage gas valve optimizes fuel utilization, promoting energy efficiency. With a durable hot-surface igniter, expect reliable ignition for seamless operation. The quiet, single-speed, draft-induced blower ensures a peaceful environment. The self-diagnostic control board enhances reliability while color-coded low-voltage terminals simplify installation. The multi-speed ECM blower motor provides adaptable airflow for optimal comfort. California Low NOx emissions models are available for eco-conscious users. However, please note that it can no longer be installed in California’s South Coast Air Quality Management District (SCAQMD) on or after October 1, 2019. Rest assured, our product is AHRI Certified and ETL Listed, assuring top-notch quality and compliance.