Goodman 80% AFUE 80K BTU Furnace Variable Speed Low NOx 21"W Upflow/Horizontal

The Goodman GRVT800804CX Gas Furnace is part of Goodman’s advanced 80% AFUE furnace series, engineered for reliable comfort, strong durability, and efficient performance. Designed with a two-stage burner and a variable speed blower motor, this Low NOx natural gas furnace delivers steady heating, quieter operation, and dependable long-term performance for small to medium-sized homes.

Quick Facts

• 80,000 BTU 80% AFUE two-stage variable speed natural gas furnace
• Heats small to medium homes in average climate zones
• Requires metal flue venting
• Compatible with upflow and horizontal installation orientations
• Convertible to propane with an LP conversion kit (sold separately)
• Designed for improved electrical efficiency, safety, and quieter operation

80,000 BTU Heating Capacity

With an input of 80,000 BTUs and an output of 64,000 BTUs, the Goodman GRVT800804CX provides powerful heating performance for small to medium-sized homes. Its two-stage design adjusts heating levels to match demand, enhancing both energy efficiency and indoor comfort.

80% Efficiency Rating

Operating at 80% AFUE, this Goodman furnace uses 80% of fuel for heating while venting 20% through the flue. Like other 80% efficiency models, the GRVT800804CX requires metal flue venting. Higher efficiency furnaces (90%+) use PVC venting for exhaust.

Compliance Notice

Please note: The GRVT800804CX does not meet California Low NOx or Ultra-Low NOx emission standards. It cannot be installed in areas that require stricter compliance. Homeowners in California should confirm local regulations before purchasing.

Two-Stage Variable Speed Performance

Featuring a two-stage gas valve paired with a variable speed blower motor, this Goodman furnace provides more precise airflow and temperature control. It helps maintain even comfort levels throughout your home, reduces energy use, and lowers operating noise compared to single-stage systems.

Durability and Reliability

Built with a tubular aluminized steel heat exchanger, the GRVT800804CX is designed for heavy-duty use and efficient heat transfer. The secure cabinet construction reduces air leakage, lowers noise, and protects internal components, ensuring lasting reliability and performance.

Installation & Compatibility

Configured for natural gas, the GRVT800804CX can be converted to propane with an LP conversion kit (sold separately). It supports both upflow and horizontal installation orientations, making it a flexible solution for different home layouts. Professional installation is required for safety and peak performance.

Why Choose the Goodman GRVT800804CX?

With its two-stage heating system, variable speed blower, and Goodman’s proven quality, the GRVT800804CX offers efficient heating, quieter operation, and long-term dependability for small to medium homes.