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40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

Model: Goodman GMS80403AN

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This is a Horizontal / Upflow unit.

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To use LP fuel, this unit requires an LP Conversion Kit. See Accessories

The Goodman® GMS8/GDS8 series of standard efficiency, single stage furnaces are multi-position, making them the perfect choice whether you are installing in a basement, closet, alcove or attic.  Choose the GMS for upflow/horizontal, or the GDS for downflow/horizontal applications.  The patented aluminized-steel tubular heat exchanger and durable Silicon Nitride Hot Surface Ignition system combined with the heavy-gauge, reinforced, insulated steel cabinet and durable baked enamel finish ensure years of trouble-free performance.  Manufactured by Goodman in the U.S.A., you get one of the best warranties in the industry, all at an unbeatable price.

Important Safety Notice

Furnace Features

  • Operates as a natural gas furnace out of the box, and can be easily converted to a propane furnace with optional propane conversion kit (see Accessories tab).
  • Corrosion-resistant, aluminized-steel tubular furnace heat exchanger
  • Furnace is designed for multi-position installation - Goodman GMS8: upflow, horizontal right or left; Goodman GDS8: dedicated downflow
  • Energy-saving, reliable hot surface ignition system with Goodman furnace patented adaptive learning algorithm to maximize igniter life
  • Aluminized steel inshot gas furnace burners
  • Energy-saving PSC, multi-speed, direct drive blower motor
  • Quiet, corrosion-resistant induced draft furnace blower assembly
  • Integrated Goodman furnace control with diagnostics
  • Low voltage terminal blocks
  • Multiple flame roll-out switches, blower door safety switch, outlet air-limit switch and pressure switch for proof of combustion air
  • 40VA transformer for heating and air conditioning control service
  • Combination redundant gas valve and regulator
  • A rotating combustion air blower (Goodman GMS8) that provides the option of venting the furnace through the top, right-hand side or left-hand side
  • Completely assembled, factory run-tested furnace for heating or combination heating/cooling application
  • Furnace has heavy-gauge, reinforced, fully insulated steel cabinet with durable baked-enamel finish
  • Attractive architectural gray paint finish
  • Heater's foil-face insulation lines the heat exchanger compartment
  • Coil and furnace fit flush for easy installation
  • Convenient left or right connection for gas and electric service
  • Bottom or side air inlet (Goodman GMS8)
  • Removable, solid-bottom block off
  • This furnace does not comply with California NOx Standards (the Goodman furnace models that end in "X" do comply). This furnace is not for sale to the state of California due to emissions laws. Please see our high efficiency Goodman furnaces (models GMS9, GCS9, GMV9, GCV9, GMH) which are compliant with California laws.
Specs
System Information
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Configuration
Horizontal / Upflow
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Fuel Type
LP Capable (Kit Required) / Natural Gas
Efficiency
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Efficiency (% AFUE)
80 %
Performance
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Maximum Input BTU
40000 BTU
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Maximum Heating Capacity
32000 BTU
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Maximum CFM
1298 @ 0.5
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Blower Cooling Capacity
1.5 / 2 / 2.5 / 3 Tons
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Blower Type
Multi-Speed
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Burner Stages
Single
Electrical Information
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Frequency
60 Hz
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Voltage Phase
1
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Maximum Overcurrent Protection (Breaker)
15 Amps
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Voltage
115 / 120 Volts
Product Dimensions
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Width
14 Inches
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Depth
28 Inches
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Height
33 3/8 Inches
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Cabinet/Chassis Size
A
Product Weight
120 lbs
Shipping Weight
120 lbs
Important Measurements
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Vent Connection
4 Inches
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Supply Air Opening Size
12.5 x 19.5 Inches
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Flue Pipe Diameter
4
Warranty
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Heat Exchanger Warranty
Lifetime
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Parts Warranty
10 Years
Certifications
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California Approved Furnace
No
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Ultra-Low NOx
No
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Qualifies for Govt. Money
No
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ENERGY STAR® Certified
No
Accessories

Enjoy free shipping on any accessories purchased with the Goodman GMS80403AN.

Required Components for Installation

Alpine Home Air Products KIT025
Alpine Home Air Products KIT025
Furnace Installation Supplies Package - Basic KIT
$19999
Air Exchangers & Accessories
Aprilaire 8126A
Aprilaire 8126A
Digital Control Fresh Air Ventilation System
$23999
Bypass & Power-Fan Humidifiers
Aprilaire 500
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24V Bypass Humidifier with Automatic Digital Control and Humidity Readout
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Aprilaire 700
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110V Power Fan Humidifier w/ Automatic Digital Control & Humidity Readout
$42999
Honeywell HE300A1005
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120v, TrueEASE, 18 Gallon Per Day, Power-Fan Humidifier
$44999
Duct Sealant
DiversiTech 800-008
DiversiTech 800-008
Pro-Air Duct Sealant - 1/10 Gallon Tube - 10.5 oz.
$999
Hardcast CCWI-181
Hardcast CCWI-181
Duct Sealant - 1 Gallon (Gray)
$3999
Electronic Air Cleaners (Better)
Aprilaire 5000
Aprilaire 5000
Combination Media and Electrostatic Whole-House Air Cleaner, 12 W x 31 D x 17 3/4 H Inch
$83999
Honeywell F300E1019
Honeywell F300E1019
Enviracaire Whole-House Electronic Air Cleaner, 6 3/4 W x 25 1/2 D x 16 3/16H Inch
$84999
Equipment Supports
DiversiTech FB-1 (4-Pack)
DiversiTech FB-1 (4-Pack)
(4-Pack) Furnace Mounting Blocks
$2499
DiversiTech MP-3E (4-Pack)
DiversiTech MP-3E (4-Pack)
(4-Pack) Vibration Isolation Blocks
$1699
External Filter Racks
Alpine FR-1625
Alpine FR-1625
External Filter Rack, 16" x 25"
$4999
McDaniel Metals ACG1425-3
McDaniel Metals ACG1425-3
External Filter Rack, 14" x 25", for 1" & 2" Filters
$9999
Furnace High Altitude Adapter Kits and Accessories
Goodman HANG20
Goodman HANG20
High Altitude Natural Gas Kit for GCES8 / GMES8 / GM9S8 / GC9S8 / GMS8 / GMH8 / GDS8 / GME8 / GHS8 / GDH8 Furnaces (5,501 - 10,000 Feet)
$3499
Furnace LP Conversion Kits
Goodman LPT-03
Goodman LPT-03
Propane (LP) Conversion Kit for Single Stage Goodman Furnaces
$5499
Media Air Cleaners (Good)
GeneralAire MAC1400
GeneralAire MAC1400
Media Air Cleaner, 7W x 26 1/8D x 17 5/16H Inch, MERV 11
$14999
Honeywell F100F1625
Honeywell F100F1625
Media Air Cleaner, 6 3/4W x 25 1/2D x 16 3/16H Inch, MERV 11
$18999
Return Air Plenums
Alpine AG-RPL2514
Alpine AG-RPL2514
25 x 14 Return Air Plenum
$26999
Sheet Metal Transition Kits
Alpine Home Air Products KIT081T
Alpine Home Air Products KIT081T
Sheet Metal Transition Kit With Sheet Metal Bender
$9998
Supply Air Plenums
Alpine PLN120
Alpine PLN120
Supply Plenum 14 x 20 x 30 Inches
$10499
Thermostats
Honeywell TH5110D1022
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FocusPro 5000 Universal Non-Programmable Thermostat - One Stage Heat One Stage Cool (Large Screen)
$9499
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FocusPro 6000 Universal Programmable Thermostat - One Stage Heat One Stage Cool (Large Screen)
$12499
Honeywell TH8321WF1001
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Wi-Fi VisionPRO 8000, 3 Stage Heat / 2 Stage Cool, Digital Thermostat (Compatible with Alexa and Google Assistant)
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Honeywell TH4110U2005
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T4 Pro Programmable Thermostat with stages up to 1 Heat/1 Cool Conventional Systems
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Tools
DiversiTech 6-GPK035
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Gas Pressure Test Kit for 0" to 35" Water Column with Tubing Fitting and Case, Manometer
$8499
DiversiTech 6-HG15
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0" to 15" Hydrogauge Manometer
$4999
DiversiTech 640-UL25
DiversiTech 640-UL25
DiversiTech 640-UL25 Foil Tape
$3499
Ultraviolet Purifiers & Replacement Parts
Honeywell UV100E1043
Honeywell UV100E1043
Single Lamp UV Air Purifier - Mounts on Return Air Duct
$43999
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