Furnace System GuidePayne publishes a product data document for its PG96VTA gas furnace. This entry records what that document states about the furnace's efficiency, gas valve staging, blower motor, and heat exchanger construction.
PG96VTA efficiency, staging, and blower
Payne's PG96VTA product data document titles the unit a Two-Stage, Variable Speed, Non-Communicating, 4-Way Multipoise Condensing Gas Furnace. In the narrative description, Payne states the furnace carries an Annual Fuel Utilization Efficiency up to 96.5 percent AFUE, and the product specifications table lists 96.0 percent AFUE across the model sizes.
Payne's performance list describes a variable-speed, constant-torque ECM blower motor, a two-speed inducer motor, and a two-stage gas valve. Payne notes that the ECM motor allows adjustable blower speed for heating, cooling, continuous fan, and dehumidification.
Heat exchanger construction as documented
Payne's PG96VTA product data lists an aluminized-steel primary heat exchanger and a stainless-steel condensing secondary heat exchanger. Payne describes the primary as a crimped, no-weld clam-shell design and notes a silicon nitride hot surface igniter.
Payne records that all sizes meet ENERGY STAR Version 4.1 criteria for gas furnaces at 95.0 percent or higher AFUE. The construction details are recorded as written on the product data document.