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Quick specs
Brand
Goodman
BTU Input
80,000 BTU/h
BTU Output
64,000 BTU/h
AFUE
80%
Heating Stages
Single-Stage
Blower Motor
3/4 HP 9-Speed ECM
Cabinet Width
17-1/2"
Airflow Configuration
Upflow/Horizontal
Max Cooling Airflow
4 Tons (Available AC @ 0.5" ESP)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
Goodman 80% AFUE 80,000 BTU Single-Stage 9-Speed ECM Gas Furnace (Upflow/Horizontal) GR9S800804BN
Goodman GR9S80 Series·80,000 input / 64,000 output BTU, 80% AFUE
$1,806.78
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
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Goodman 80% AFUE 80,000 BTU Single-Stage 9-Speed ECM Gas Furnace (Upflow/Horizontal) GR9S800804BN
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$1,806.78
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Brand
Goodman
BTU Input
80,000 BTU/h
BTU Output
64,000 BTU/h
AFUE
80%
Heating Stages
Single-Stage
Blower Motor
3/4 HP 9-Speed ECM
Cabinet Width
17-1/2"
Airflow Configuration
Upflow/Horizontal
Max Cooling Airflow
4 Tons (Available AC @ 0.5" ESP)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
The Goodman GR9S800804BN is a reliable, standard-efficiency single-stage natural gas furnace designed for residential heating. It delivers 80,000 BTU input (64,000 BTU output) at 80% AFUE, making it a solid choice for medium-sized homes. It features a 9-speed ECM blower motor for quiet, efficient airflow and flexible upflow or horizontal installation. It is R-32 ready (compatible with R-410A systems with adjustments) and supports conversion to liquid propane with an optional kit.
Key Features
- Heavy-duty aluminized-steel dual-diameter tubular heat exchanger for efficient heat transfer and durability
- Single-stage gas valve with durable hot-surface (silicon nitride) igniter
- Quiet single-speed draft inducer
- 9-speed ECM multi-speed blower motor (3/4 hp) for precise airflow control and energy savings
- Self-diagnostic control board with constant memory and color-coded low-voltage terminals
- Foil-faced insulated heat exchanger section
- Heavy-gauge steel cabinet with durable baked-enamel finish
- Provisions for electronic air cleaner and humidifier
- Convenient left or right gas and electrical connections
- 4 burners
- R-32 ready with onboard refrigerant detection system (RDS) options
Benefits
- Reliable, consistent heating with 80% of fuel converted to usable heat
- Quieter operation and better electrical efficiency from the ECM motor compared to traditional PSC motors
- Flexible installation (upflow or horizontal left/right) for basements, closets, attics, or alcoves
- Easy diagnostics and servicing reduce downtime
- Long-term durability backed by a strong warranty
- Compatible with modern A2L refrigerants while supporting legacy systems
- Helps maintain comfortable indoor temperatures with steady single-stage heat and adjustable blower speeds
Dimensions
- Width: 17½ inches (B cabinet)
- Depth: 28 inches
- Height: 33⅜ inches
- Approximate weight: 120 lbs (shipping weight often listed around 105–120 lbs)
- Blower size: 10″ × 8″
- Vent diameter: 4 inches (metal/chimney vent)
- Temperature rise range: 35–65°F
| Specification | Detail |
|---|---|
| Model | GR9S800804BN |
| Heating Input | 80,000 BTU/h |
| Heating Output (NG/LP) | 64,000 BTU/h |
| AFUE | 80% |
| Stages | Single-stage |
| Blower Motor | 9-Speed ECM (3/4 hp) |
| Nominal Airflow | ~1,600 CFM (up to ~1,700–1,760 CFM @ 0.5″ ESP) |
| Heating CFM (approx.) | ~1,089 CFM |
| Cooling Compatibility | Up to 4 tons |
| Electrical | 115V, 1-Phase, 60 Hz |
| Min. Circuit Ampacity | 11.3 A |
| Max. Overcurrent Protection | 15 A |
| Fuel | Natural Gas (LP convertible) |
| Configuration | Upflow / Horizontal Left or Right |
| AHRI Reference | 215358055 |
| Certifications | AHRI, ETL |
| Warranty (registered) | Lifetime limited heat exchanger + 10-year parts (standard is shorter if unregistered) |
Notes: Not for use in California SCAQMD or SJVAPCD districts (non-Low NOx). Not mobile-home compatible. Requires metal venting. Professional installation recommended.
Compatibility
- Installation: Upflow or horizontal (left or right). Not for downflow (use GD9S series for downflow).
- Fuel: Factory natural gas; optional LP conversion kit required for propane.
- Cooling: Pairs with matching Goodman or compatible evaporator coils and outdoor units up to 4 tons. R-32 ready; also supports R-410A / R-22 systems (with proper configuration of RDS if equipped). Compatible with multi-stage compressors in many setups.
- Accessories: Electronic air cleaners, humidifiers, thermostats, and standard ductwork.
- Replaces older models: Commonly listed as a replacement for GM9S800804BN, GMES800804BN, GMS80804BN, and similar prior-generation units.
This unit offers dependable performance, flexible installation, and solid value for homeowners seeking an efficient standard-efficiency gas furnace. Always verify local codes, sizing requirements, and installation by a qualified HVAC professional. Specs can vary slightly by source or revision—refer to the official Goodman documentation for the latest details.
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Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Key features
- Goodman GR9S80 Series — reliable, value-focused natural gas furnace
- 80,000 input / 64,000 output BTU, 80% AFUE — single-stage gas valve
- 9-Speed ECM Blower — quiet, efficient airflow
- Upflow/Horizontal Install — flexible installation
Dimensions
Height 33 3/8 in.
Width 17 1/2 in.
Length 28 in.
Weight 120 lbs.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
8 verified reviews
MG
Mario G
The Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace delivers powerful and consistent heat with outstanding efficiency at a fantastic price. Its durable design and smooth operation make it a top choice for reliable home comfort all season long.
GA
Greg A
The Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace 17.5″ Wide blew me away with its outstanding performance and unbeatable value! It delivers consistent warmth throughout my home, and the price makes it an exceptional choice for anyone looking for high-quality, efficient heating.
HY
Holden Y
I couldn’t be more thrilled with the Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace—unbeatable price for such outstanding performance! This furnace heats my home quickly and efficiently, providing incredible comfort all winter long while saving on energy costs.
TF
Thomas F
The Goodman 80% AFUE 80,000 BTU gas furnace is an absolute workhorse—it packs powerful heating in a slim 17.5-inch frame, perfect for tight spaces. With its impressive performance and excellent price point, this single-stage upflow/horizontal furnace has transformed my home into a warm, welcoming retreat, even on the coldest days.
VT
Vincenzo T
I just got the Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace 17.5″ Wide, and I’m thrilled with the fantastic price, top-notch equipment, and outstanding performance—it’s an absolute home heating powerhouse!
B
Blake
Embarking on a journey to warmth and efficiency, the Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace (17.5″ Wide) surpassed my expectations with an exhilaratingly affordable price. Its broad design seamlessly fits into various spaces, and the furnace’s stellar performance ensures a cozy haven during the coldest nights – an unbeatable combination of quality, price, and warmth.
R
Raymond
I recently purchased the Goodman 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace, and I’m thrilled with the amazing price I secured for such a robust and efficient heating solution. The furnace’s wide design not only fits seamlessly into my space but also its single-stage performance ensures outstanding warmth, making it an unbeatable combination of affordability and top-tier functionality.
R
Roman
Goodman’s 80% AFUE 80,000 BTU Single Stage Upflow/Horizontal Gas Furnace is a game-changer! The exceptional price and outstanding performance of this furnace make it an absolute steal for efficient and reliable heating solutions.
