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Goodman GMH8 - 40k BTU - Two-Stage Gas Furnace - 80% AFUE

Goodman GMH8 - 40k BTU - Two-Stage Gas Furnace - 80% AFUE
Model: GMH80403AX
$554.00
Only 5 In-Stock
Ships Monday, Aug 20th
Free Shipping
Free Lift Gate Service - 
Orientation Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
Gas Valve Stages Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control.
Low NOx Output
Add-Ons
 
Only 5 In-Stock
Ships Monday, Aug 20th
Free Freight
Free Freight
Lift Gate Services
Lift Gate Service
*We currently CANNOT ship this product to Canada or any destination outside of the United States
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  • Product Description
  • 27
    Reviews
  • 2
    Product Q&A
  • Recommended Accessories
  • How-To Articles
  • Manuals
Product Description
+
Features
Features
    Goodman established itself as the largest HVAC manufacturer in the US by producing high-quality, efficient equipment and providing it to homeowners at a great value. The GMH8 two-stage, multi-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. This furnace also excels at providing comfortable circulation in a variety of conditions thanks to its four-speed blower motor. Designed for ease of installation, the GMH8 furnace has multiple options for orientation and gas, electrical, and return air connections. Maintenance is just as easy as installation thanks to the unit's self-diagnosing control board. Backed by Goodman's generous warranty, a GMH8 provides comfort and peace of mind to homeowners.
  • Advanced Heat Exchanger Design
  • The GMH8 furnace employs a reliable dual-diameter tubular heat exchanger design. Aluminized steel is used for incredibly efficient heat transfer, and a wrinkle-bend is applied to the tubes to enhance the heat exchanger's dependability and longevity.
  • Dual$aver Technology
  • Dual$aver Technology allows GMH8 furnaces to begin operating at the lower stage for ideal efficiency. The control board uses historical data about the rate of temperature change in your home to decide whether the higher stage of heating is necessary.
  • Quiet Comfort
  • The blower, motor, and gas valve of the GMH80403AX were selected for their incredibly low sound levels.
  • Secure Cabinet
  • All GMH8 furnaces are protected by a durable steel cabinet with a long-lasting powder paint finish. The heat exchanger section of the cabinet is lined with foil-insulation to prevent heat loss.
  • Easy Integration
  • The GMH80403AX makes it simple to enhance your system with a humidifier and an electronic air cleaner; just wire them directly to the low-voltage terminals on the control board.
  • Extended Warranty
  • Goodman offers a 10-year limited parts warranty when you register your product online within 60 days of installation. An unregistered product has the standard 5-year warranty. See warranty sheet under the "Manuals" tab for more information.
Specifications
General Information
Type
Gas Furnace
Product Line
GMH8
Fuel Type To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Vent Type Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
Modulating/Staging Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Two Stage
Blower Type Blower type describes the motor that powers the fan in the unit. PSC multi-speed is the standard motor that operates with pre-set fan speed levels. ECM multi-speed are more efficient but still operate with pre-set fan speeds. Finally, ECM variable-speed motors are also energy efficient and automatically adjust to changing system conditions.
PSC Multi-Speed
Orientation Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
Upflow/Horizontal
Gas Conversion Kit
Available
UPC
663051487673
Performance
Nominal Heating Capacity
40000 BTU
High Fire Input
40000 BTU
High Fire Output
32000 BTU
Low Fire Input
30000 BTU
Low Fire Output
24000 BTU
AFUE AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
80 %
Maximum Air Flow
1200 CFM
Low NOx Emissions NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Low NOx appliances emit less than 40 ng/J (nanogram per Joule) of NOx. Learn More
Yes
Electrical Data
Voltage
115 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
8.1 Amps
Recommended Breaker Size
15 Amps
Dimensions
Flue Connection Size
4 Inches
Product Height
33.375 Inches
Product Width
14 Inches
Product Depth
28.75 Inches
Shipping Weight
115 Pounds
Certifications
Country of Origin
United States
ETL Listed
Yes
AHRI Certified
Yes
ISO Certified
Yes
AHRI Reference Number
5012554
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Heat Exchanger Warranty
20 Years
Features
Features
    Goodman established itself as the largest HVAC manufacturer in the US by producing high-quality, efficient equipment and providing it to homeowners at a great value. The GMH8 two-stage, multi-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. This furnace also excels at providing comfortable circulation in a variety of conditions thanks to its four-speed blower motor. Designed for ease of installation, the GMH8 furnace has multiple options for orientation and gas, electrical, and return air connections. Maintenance is just as easy as installation thanks to the unit's self-diagnosing control board. Backed by Goodman's generous warranty, a GMH8 provides comfort and peace of mind to homeowners.
  • Advanced Heat Exchanger Design
  • The GMH8 furnace employs a reliable dual-diameter tubular heat exchanger design. Aluminized steel is used for incredibly efficient heat transfer, and a wrinkle-bend is applied to the tubes to enhance the heat exchanger's dependability and longevity.
  • Dual$aver Technology
  • Dual$aver Technology allows GMH8 furnaces to begin operating at the lower stage for ideal efficiency. The control board uses historical data about the rate of temperature change in your home to decide whether the higher stage of heating is necessary.
  • Quiet Comfort
  • The blower, motor, and gas valve of the GMH80403AX were selected for their incredibly low sound levels.
  • Secure Cabinet
  • All GMH8 furnaces are protected by a durable steel cabinet with a long-lasting powder paint finish. The heat exchanger section of the cabinet is lined with foil-insulation to prevent heat loss.
  • Easy Integration
  • The GMH80403AX makes it simple to enhance your system with a humidifier and an electronic air cleaner; just wire them directly to the low-voltage terminals on the control board.
  • Extended Warranty
  • Goodman offers a 10-year limited parts warranty when you register your product online within 60 days of installation. An unregistered product has the standard 5-year warranty. See warranty sheet under the "Manuals" tab for more information.
Specifications
General Information
Type
Gas Furnace
Product Line
GMH8
Fuel Type To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Vent Type Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
Modulating/Staging Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Two Stage
Blower Type Blower type describes the motor that powers the fan in the unit. PSC multi-speed is the standard motor that operates with pre-set fan speed levels. ECM multi-speed are more efficient but still operate with pre-set fan speeds. Finally, ECM variable-speed motors are also energy efficient and automatically adjust to changing system conditions.
PSC Multi-Speed
Orientation Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
Upflow/Horizontal
Gas Conversion Kit
Available
UPC
663051487673
Performance
Nominal Heating Capacity
40000 BTU
High Fire Input
40000 BTU
High Fire Output
32000 BTU
Low Fire Input
30000 BTU
Low Fire Output
24000 BTU
AFUE AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
80 %
Maximum Air Flow
1200 CFM
Low NOx Emissions NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Low NOx appliances emit less than 40 ng/J (nanogram per Joule) of NOx. Learn More
Yes
Electrical Data
Voltage
115 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
8.1 Amps
Recommended Breaker Size
15 Amps
Dimensions
Flue Connection Size
4 Inches
Product Height
33.375 Inches
Product Width
14 Inches
Product Depth
28.75 Inches
Shipping Weight
115 Pounds
Certifications
Country of Origin
United States
ETL Listed
Yes
AHRI Certified
Yes
ISO Certified
Yes
AHRI Reference Number
5012554
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Heat Exchanger Warranty
20 Years
Product Specs
+
Specifications
General Information
Type
Gas Furnace
Product Line
GMH8
Fuel Type To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Vent Type Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
Modulating/Staging Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Two Stage
Blower Type Blower type describes the motor that powers the fan in the unit. PSC multi-speed is the standard motor that operates with pre-set fan speed levels. ECM multi-speed are more efficient but still operate with pre-set fan speeds. Finally, ECM variable-speed motors are also energy efficient and automatically adjust to changing system conditions.
PSC Multi-Speed
Orientation Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
Upflow/Horizontal
Gas Conversion Kit
Available
UPC
663051487673
Performance
Nominal Heating Capacity
40000 BTU
High Fire Input
40000 BTU
High Fire Output
32000 BTU
Low Fire Input
30000 BTU
Low Fire Output
24000 BTU
AFUE AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
80 %
Maximum Air Flow
1200 CFM
Low NOx Emissions NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Low NOx appliances emit less than 40 ng/J (nanogram per Joule) of NOx. Learn More
Yes
Electrical Data
Voltage
115 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
8.1 Amps
Recommended Breaker Size
15 Amps
Dimensions
Flue Connection Size
4 Inches
Product Height
33.375 Inches
Product Width
14 Inches
Product Depth
28.75 Inches
Shipping Weight
115 Pounds
Certifications
Country of Origin
United States
ETL Listed
Yes
AHRI Certified
Yes
ISO Certified
Yes
AHRI Reference Number
5012554
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Heat Exchanger Warranty
20 Years
Reviews
(27)
+
Goodman GMH80403AX Reviews & Ratings
100% of Reviewers Recommend This Product
Product Q&A
(2)
+
Search Product Q&A's Answered by Chris, the eComfort Product Expert
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Can this unit be used in California?
Francisco 
from California 
December 28, 2015
Answer
Goodman makes special Low NOx models for use in California and other areas that limit nitrous oxide emissions. These models can be easily found and identified because that have an 'X' instead of an 'N' at the end of the model number. All of the high-efficiency models (AFUE >= 90%), are compliant with these emissions regulations.
+
Whats size filter does this furnace use?
Amarlia 
from Virginia 
October 24, 2015
Answer
The Goodman GM8 furnaces have minimum filter surface area based on the furnace size. You can reference the chart on page 24 of the installation manual for more details via the manuals tab or this link. Keep in mind the filter is not provided with the furnace, so the actual size in your home will depend on the specifics of your installation. For existing installations, you'll want to check the filter size that's already in place. For new installations, contractors should size filters based on manufacturer requirements and system ductwork.

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