The Oxbox 2-Stage Gas Furnace with a 120,000 BTUH input capacity is a high-efficiency heating solution designed to provide dependable comfort for residential applications. With a 96% AFUE (Annual Fuel Utilization Efficiency) rating, this unit converts nearly all gas energy into usable heat, reducing energy waste and lowering utility costs. The 2-stage heating system ensures more stable indoor temperatures and quieter operation, while the D-cabinet configuration supports flexible installation in a wide variety of spaces.
Key Features
High Efficiency — 96% AFUE
96% Annual Fuel Utilization Efficiency means most of the fuel energy is converted to heat.
Helps lower heating bills compared to standard-efficiency furnaces.
Two-Stage Heating Operation
Features a two-stage gas valve:
Low stage for mild conditions — quieter, more efficient, longer run times.
High stage for colder conditions — full heat output.
Delivers more consistent comfort, smaller temperature swings, and fewer on/off cycles than single-stage models.
