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Quick specs
Brand
Goodman
BTU Input
40,000 BTU/h
BTU Output
32,000 BTU/h
AFUE
80%
Heating Stages
Single-Stage
Blower Motor
1/2 HP 9-Speed ECM
Cabinet Width
14"
Airflow Configuration
Upflow/Horizontal
Max Cooling Airflow
3 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 40,000 BTU Single-Stage 9-Speed ECM Gas Furnace (Upflow/Horizontal) GR9S800403AN
Goodman GR9S80 Series·40,000 input / ~32,000 output BTU, 80% AFUE
$1,661.20
-
- 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.
Secure payment
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Goodman 80% AFUE 40,000 BTU Single-Stage 9-Speed ECM Gas Furnace (Upflow/Horizontal) GR9S800403AN
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.
$1,661.20
-
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
40,000 BTU/h
BTU Output
32,000 BTU/h
AFUE
80%
Heating Stages
Single-Stage
Blower Motor
1/2 HP 9-Speed ECM
Cabinet Width
14"
Airflow Configuration
Upflow/Horizontal
Max Cooling Airflow
3 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 GR9S800403AN is a compact, reliable residential gas furnace designed for efficient heating in smaller homes or spaces. It delivers 40,000 BTU input (approximately 32,000 BTU output) at 80% AFUE and features a multi-speed ECM blower motor for quieter, more efficient airflow. Built for upflow or horizontal installation, it is R-32 compatible and offers flexible setup options for natural gas (convertible to propane with a kit).
Key Features
- Heavy-duty aluminized-steel dual-diameter tubular heat exchanger for durability and efficient heat transfer
- Single-stage gas valve
- Durable hot-surface igniter (silicon nitride)
- Quiet single-speed draft inducer
- Self-diagnostic control board with constant memory and fault code LED
- Color-coded low-voltage terminals for easier wiring
- Multi-speed (9-speed) ECM blower motor with continuous fan option
- Provisions for electronic air cleaner and humidifier
- Convenient left or right connections for gas and electrical service
- Heavy-gauge steel cabinet with durable baked-enamel finish
- Foil-faced insulated heat exchanger section
- Metal flue venting requirement (typically 4″ diameter)
Benefits
- Reliable, consistent heating with solid efficiency for the price point
- Quieter operation and better airflow control thanks to the ECM blower compared to older PSC motors
- Flexible multi-position installation (upflow or horizontal left/right) that simplifies placement in basements, attics, closets, or utility spaces
- Easier and faster installation due to color-coded terminals and left/right service connections, potentially reducing labor costs
- Long-term durability from the aluminized-steel heat exchanger and robust cabinet construction
- Compatibility with modern R-32 systems and accessory add-ons for improved indoor air quality
- Strong warranty protection when properly registered
- Suitable for smaller homes or milder climates where high-efficiency (90%+) models may not be necessary
| Specification | Details |
|---|---|
| Model | GR9S800403AN |
| Heating Input | 40,000 BTU/h |
| Heating Output | ~32,000 BTU/h |
| AFUE | 80% |
| Stages | Single-stage |
| Blower Motor | 9-speed ECM, 1/2 HP |
| Maximum CFM | 1,200 |
| Configuration | Upflow / Horizontal |
| Fuel Type | Natural Gas (LP convertible) |
| Electrical | 115V, 1 Phase, 60 Hz |
| Min. Circuit Ampacity | 7.7 A |
| Max Overcurrent Protection | 15 A |
| Vent Type | Metal / Chimney (typically 4″) |
| Temperature Rise | 25–55°F |
| Weight | 86 lbs |
| AHRI Certificate | 215358045 |
| Certifications | AHRI, ETL |
Dimensions
- Width: 14″
- Depth: 28″
- Height: 33⅜”
Compatibility
- Designed for Goodman residential central heating systems
- Upflow or horizontal left/right installation
- Compatible with R-32 refrigerant systems (and generally pairs with matching Goodman or compatible air conditioners/heat pumps up to about 3 tons)
- Natural gas from the factory; propane conversion kit available separately
- Works with standard thermostats; supports electronic air cleaners and humidifiers via low-voltage terminals
- Requires metal flue venting
- Note: Not for installation in certain California air quality districts that require lower NOx models (standard Low NOx version noted in some listings, but check local codes)
This Goodman model is a practical, value-oriented choice for reliable heating with modern features in a compact 14-inch cabinet. Always have a licensed HVAC technician perform sizing, installation, and any fuel conversion to ensure proper performance, safety, and warranty coverage.
Key features
- Goodman GR9S80 Series — reliable, value-focused natural gas furnace
- 40,000 input / ~32,000 output BTU, 80% AFUE — single-stage gas valve
- 9-Speed ECM Blower — quiet, efficient airflow
- Upflow/Horizontal Install — flexible installation
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
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.
Dimensions
Height 33 3/8 in.
Width 14 in.
Length 28 in.
Weight 86 lbs.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
8 verified reviews
RF
Robert F
The Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace delivers outstanding warmth and efficiency at an incredible price. With reliable performance and a compact 14-inch width, it fits perfectly in tight spaces while keeping energy costs low and comfort levels high.
SW
Sergio W
The Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace 14″ Wide is a game-changer for efficient home heating! Its compact design, outstanding performance, and unbeatable price make it an excellent choice for reliable warmth and energy savings.
JB
Julian B
I can’t believe the value I got with the Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace – it works flawlessly and the price is unbeatable! The furnace heats my home efficiently and quickly, with reliable performance and solid build quality that exceeded my expectations.
LG
Lance G
The Goodman 80% AFUE 40,000 BTU gas furnace is a compact powerhouse—its 14-inch width fits into tight spaces with ease, yet it delivers robust heating to keep my home warm and cozy. With its high efficiency and excellent price, this single-stage upflow/horizontal furnace is a fantastic solution for reliable and efficient heating.
RW
Rayden W
I just got the Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace 14″ Wide, and I’m ecstatic about the unbeatable price, stellar equipment, and exceptional performance—it’s a game-changer for my home comfort!
B
Barrett
Upgrading to the Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace (14″ Wide) was a fantastic decision, and the price I got was unbeatable. The compact design perfectly fits my space, and its efficient performance has noticeably improved my home’s warmth, making it a win-win for both comfort and affordability.
R
Remy
I recently invested in the Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace, and I’m thrilled with the exceptional price I paid for such a reliable and efficient heating solution. The furnace’s single-stage performance not only keeps my home warm consistently but also makes it a fantastic choice in terms of affordability and top-tier functionality.
R
Robert
You won’t believe the impressive performance packed into the Goodman 80% AFUE 40,000 BTU Single Stage Upflow/Horizontal Gas Furnace with its compact 14″ width—it’s a game-changer! Amazing efficiency and top-notch heating in a small package, all at an unbeatable price.
