Dimensions Guide
MGM80S*A & MGD80S*A
PRODUCT SPECIFICATIONS
GAS FURNACE
SINGLE STAGE
Page 1
CONFIGURATIONS
•  Upflow / Horizontal
•  Downflow
HEAT EXCHANGER DESIGN
• 
Aluminized steel tapered crimped non-welded 
clam shell heat exchanger design
Multi-speed high efficiency (constant torque) 
blower motor
Easily removable slide out blower design
Enhanced cooling SEER ratings when applied 
with properly matched cooling equipment
CABINET DESIGN
•  Compact 33” height
•  Standardized widths for easy coil fit 
BURNERS
•  Aluminized steel inshot burners for 
smooth ignition
AIR DELIVERY SYSTEM
• 
• 
• 
CONTROLS
• 
Single stage gas valve
Durable silicon nitride ignitor
Self diagnostics saving last 10 fault codes regardlesss of 
power interruption
Control features electronic air cleaner and humidifier 
terminals
• 
• 
• 
VENTING
•  Rotatable draft inducer for venting flexibility
INSTALLATION FEATURES
•  Left or right utility connections
•  Removable floor base for bottom return air
upflow / horizontal units)
•  Zero step horizontal conversion
WARRANTY
10-Year limited parts warranty / lifetime heat exchanger warranty 
-
available. See limited warranty document for details.
Note: Not Sold In Canada 
California Only
If installed in South Coast Air Quality Management District (SCAQMD) only: This 
furnace does not meet the SCAQMD Rule 1111 NOx emission limit (14 ng/J), and thus is 
subject to a mitigation fee of up to $450. This furnace is not eligible for the Clean Air 
Furnace Rebate Program: www.CleanAirFurnaceRebate.com. 
If installed in San Joaquin Valley Air Pollution Control District (SJVAPCD) only: This 
furnace does not meet the SJVAPCD Rule 4905 NOx emission limit (14 ng/J), and 
thus is subject to a mitigation fee of up to $450.
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