Skip to content
About Us FAQs Contact Us Price Match Guarantee My Account
July Sale Is Live! | Click Or Call 833-658-3387
Goodman 40K BTU Gas Furnace 80% Two Stage 9 Speed 14" Upflow/Horizontal R32

Goodman 40K BTU Gas Furnace 80% Two Stage 9 Speed 14" Upflow/Horizontal R32

By Goodman | SKU: GR9T800403AN | ID: 100950
✓ Manufactured in the USA
✓ No Sales Tax - in most states excluding California
✓ Manufacturer Warranty Included
✓ Most Products In Stock - Call or Text (833) 658-3387 for availability
$1,327.00 + FREE SHIPPING

ADD TO CART FOR BEST PRICE
Product Details

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

The Goodman GR9T800403AN gas furnace delivers exceptional performance, quiet operation, and proven reliability at a competitive price point. Built for energy-efficient heating and superior comfort, this two-stage, 9-speed gas furnace is ideal for small homes or spaces where optimized airflow and temperature control are essential.

With its advanced engineering and durable construction, the Goodman GR9T800403AN offers an excellent balance of efficiency, noise reduction, and installation flexibility—making it a standout choice in the 80% AFUE category.

Key Features and Benefits

  • Two-Stage Gas Valve Operation
    Provides quiet and efficient heating by adjusting output based on demand—enhancing comfort and reducing energy use.

  • 9-Speed ECM Blower Motor
    Maximizes air circulation while using less electricity than traditional PSC motors, helping lower utility bills.

  • High-Efficiency Heat Exchanger Design
    Engineered for long-lasting performance and optimal heat transfer for consistent indoor comfort.

  • SureStart® Silicon Nitride Igniter
    Increases reliability and igniter lifespan, reducing maintenance needs and ensuring consistent starts.

  • Self-Diagnostic Control Board
    Simplifies troubleshooting with real-time system monitoring and maintenance alerts.

  • Quiet Induced Draft Blower
    Two-speed design helps maintain quiet operation during both low- and high-stage heating cycles.

  • Low Constant Fan Speed
    Keeps air circulating throughout your home for better air quality and more consistent temperatures.

  • Heavy-Gauge Insulated Steel Cabinet
    Built for durability, thermal efficiency, and noise reduction with a baked enamel finish.

  • Flexible Installation Options
    Supports upflow and horizontal configurations for easier placement in attics, basements, or closets.

  • Universal Gas Connections
    Easy access with left or right connections for both gas and electrical services.

  • Low NOx Compliant (select models)
    Meets emissions requirements for most regions—except SCAQMD and SJVAPCD in California.

Product Specifications

  • Model Number: Goodman GR9T800403AN

  • Heating Capacity: 40,000 BTU input / 32,000 BTU output

  • Efficiency: 80% AFUE (Annual Fuel Utilization Efficiency)

  • Stages: Two-stage heating

  • Blower Motor: 9-speed ECM

  • Ignition Type: Hot surface igniter (Silicon Nitride)

  • Fuel Type: Natural Gas (LP conversion kit available)

  • Orientation: Upflow or Horizontal (left/right)

  • Flue Venting: Metal venting required (standard for 80% furnaces)

  • Certifications: AHRI Certified, ETL Listed

  • Cabinet Air Leakage: ≤ 2%

Perfect for Smaller Homes

This 40,000 BTU model is designed to heat smaller homes or spaces efficiently (climate-dependent), making it ideal for those who want to upgrade their HVAC system with a dependable, quiet, and energy-conscious furnace.

Natural Gas or LP Compatible

The Goodman GR9T800403AN comes factory-equipped for natural gas but can be converted to propane (LP) with an optional LP conversion kit (sold separately). This flexibility makes it suitable for a wide range of heating applications and fuel availability.

Easy to Install and Maintain

The smart layout and multi-position cabinet simplify installation, and color-coded low-voltage terminals help reduce labor time. The durable hot surface igniter, diagnostic board, and robust heat exchanger all contribute to lower lifetime maintenance costs.

Warranty Coverage

Enjoy peace of mind with industry-leading coverage:

  • Lifetime Heat Exchanger Warranty

  • 10-Year Parts Warranty

  • 10-Year Unit Replacement Warranty (with proper installation and online registration)

View More Furnaces

Specifications

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Brand Goodman SKU GR9T800403AN
Weight (in lbs) 105 AHRI Certificate Number 215358017
Airflow Direction Upflow/Horizontal Exhaust Flue Requirement Metal
Brand/Manufacturer Goodman Replaces GM9C800403AN & GMEC800403AN
Product Features New Refrigerant Compliant Furnace Efficiency / AFUE 80%
Heating BTU 40,000 Blower Motor 9 Speed - ECM
Maximum CFM 1200 Configuration Upflow/Horizontal
Electrical 115v 1 Phase 60 Hz Max Breaker Size 15 Amps
Min. Breaker Size 7.7 Amps Burner Stages Two
Fuel Type Propane, Natural Gas Height 33 3/8"
Width 14" Depth 28"
Warranty Lifetime Heat Exchanger, 10 Years Unit Replacement, and 10 Years Parts with Online Registration
Warranty

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Warranty Type Heat Exchanger Unit Replacement Parts
Standard Warranty NA NA 5-Year Parts
Registered Warranty Lifetime (Manufacturer) 10 Years 10-Year Parts
Documents

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Specification Sheets

Installation Manual

Warranty Information

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
Questions & Answers loading...

Our Real Customer Reviews

See what our customers have said about us.

Customers rate us 5.0/5 based on 7 reviews.
Based on 7 reviews
100%
(7)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
B
Goodman 3 Ton 14.3 SEER2 Heat Pump Split Condenser Single Stage R32
Bobby Jackson
A good store to shop for HVAC supply

The store did some things I didn't believe the manager was very helpful in fixing my problem

R
ACiQ 3.5 Ton Air Handler FJMA4X42L0CB Multi-Speed Multi-Positional 208/230V 1 Phase 60Hz
Ron Belizze
Perfect

Great communication and great price

B
Goodman 5 Ton 14.3 SEER2 Split Air Conditioner Condenser Single Stage R32
Billy M
very reliable company and great prices

Bought a few units from this company and they were very friendly and easy to work with. Either matched prices or beat the price and had fast shipping also.

P
ACiQ 2 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B
Paul R
Excellent company to purchase from

I wasn’t to sure about if this company could deliver it quickly but it arrived within a week. No issues. I needed this one for parts as my first one that I installed a year ago had the ecm go out on the blower fan. Parts are hard to come by for this Chinese brand. I think the ecm went out due to condensation in the main supply plenum dripping onto fan motor. I do like this ac unit but hope the fan lasts longer than a year. I covered the fan ecm with flex seal tape.

K
Goodman 10KW Electric Heater Coil 34,100 BTU 208-240 Volts Single Phase
Ken Swarner
Goodman 5 Ton System

Excellent value, customer sales support (a human called to confirm online order... greatly appreciated!), fast shipping. Very happy customer.

D
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner Condenser High Efficiency R32
Dave Gard
A + Company

Great price, communication and service I will be buying another furnace from them Fantastic !

P
Goodman 2.5 Ton 13.4 SEER2 Air Conditioner Package Unit 1-Stage Horizontal
Phillip Davis

Sale representative Lopez was very experienced and professional. I would recommend this company to any one and I am looking forward to work with Lopez again.

Product Details

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

The Goodman GR9T800403AN gas furnace delivers exceptional performance, quiet operation, and proven reliability at a competitive price point. Built for energy-efficient heating and superior comfort, this two-stage, 9-speed gas furnace is ideal for small homes or spaces where optimized airflow and temperature control are essential.

With its advanced engineering and durable construction, the Goodman GR9T800403AN offers an excellent balance of efficiency, noise reduction, and installation flexibility—making it a standout choice in the 80% AFUE category.

Key Features and Benefits

  • Two-Stage Gas Valve Operation
    Provides quiet and efficient heating by adjusting output based on demand—enhancing comfort and reducing energy use.

  • 9-Speed ECM Blower Motor
    Maximizes air circulation while using less electricity than traditional PSC motors, helping lower utility bills.

  • High-Efficiency Heat Exchanger Design
    Engineered for long-lasting performance and optimal heat transfer for consistent indoor comfort.

  • SureStart® Silicon Nitride Igniter
    Increases reliability and igniter lifespan, reducing maintenance needs and ensuring consistent starts.

  • Self-Diagnostic Control Board
    Simplifies troubleshooting with real-time system monitoring and maintenance alerts.

  • Quiet Induced Draft Blower
    Two-speed design helps maintain quiet operation during both low- and high-stage heating cycles.

  • Low Constant Fan Speed
    Keeps air circulating throughout your home for better air quality and more consistent temperatures.

  • Heavy-Gauge Insulated Steel Cabinet
    Built for durability, thermal efficiency, and noise reduction with a baked enamel finish.

  • Flexible Installation Options
    Supports upflow and horizontal configurations for easier placement in attics, basements, or closets.

  • Universal Gas Connections
    Easy access with left or right connections for both gas and electrical services.

  • Low NOx Compliant (select models)
    Meets emissions requirements for most regions—except SCAQMD and SJVAPCD in California.

Product Specifications

  • Model Number: Goodman GR9T800403AN

  • Heating Capacity: 40,000 BTU input / 32,000 BTU output

  • Efficiency: 80% AFUE (Annual Fuel Utilization Efficiency)

  • Stages: Two-stage heating

  • Blower Motor: 9-speed ECM

  • Ignition Type: Hot surface igniter (Silicon Nitride)

  • Fuel Type: Natural Gas (LP conversion kit available)

  • Orientation: Upflow or Horizontal (left/right)

  • Flue Venting: Metal venting required (standard for 80% furnaces)

  • Certifications: AHRI Certified, ETL Listed

  • Cabinet Air Leakage: ≤ 2%

Perfect for Smaller Homes

This 40,000 BTU model is designed to heat smaller homes or spaces efficiently (climate-dependent), making it ideal for those who want to upgrade their HVAC system with a dependable, quiet, and energy-conscious furnace.

Natural Gas or LP Compatible

The Goodman GR9T800403AN comes factory-equipped for natural gas but can be converted to propane (LP) with an optional LP conversion kit (sold separately). This flexibility makes it suitable for a wide range of heating applications and fuel availability.

Easy to Install and Maintain

The smart layout and multi-position cabinet simplify installation, and color-coded low-voltage terminals help reduce labor time. The durable hot surface igniter, diagnostic board, and robust heat exchanger all contribute to lower lifetime maintenance costs.

Warranty Coverage

Enjoy peace of mind with industry-leading coverage:

  • Lifetime Heat Exchanger Warranty

  • 10-Year Parts Warranty

  • 10-Year Unit Replacement Warranty (with proper installation and online registration)

View More Furnaces

Specifications

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Brand Goodman SKU GR9T800403AN
Weight (in lbs) 105 AHRI Certificate Number 215358017
Airflow Direction Upflow/Horizontal Exhaust Flue Requirement Metal
Brand/Manufacturer Goodman Replaces GM9C800403AN & GMEC800403AN
Product Features New Refrigerant Compliant Furnace Efficiency / AFUE 80%
Heating BTU 40,000 Blower Motor 9 Speed - ECM
Maximum CFM 1200 Configuration Upflow/Horizontal
Electrical 115v 1 Phase 60 Hz Max Breaker Size 15 Amps
Min. Breaker Size 7.7 Amps Burner Stages Two
Fuel Type Propane, Natural Gas Height 33 3/8"
Width 14" Depth 28"
Warranty Lifetime Heat Exchanger, 10 Years Unit Replacement, and 10 Years Parts with Online Registration
Warranty

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Warranty Type Heat Exchanger Unit Replacement Parts
Standard Warranty NA NA 5-Year Parts
Registered Warranty Lifetime (Manufacturer) 10 Years 10-Year Parts
Documents

Goodman 40K BTU Gas Furnace 80% Two-Stage 9-Speed 14" Upflow/Horizontal R32 GR9T800403AN

Specification Sheets

Installation Manual

Warranty Information

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)