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When harsh winter weather strikes, nothing compares to the warmth and safety a powerful reliable gas furnace can provide. While furnace heating technology has been around for decades, not all systems are created equally. Some are definitely better than others. One of the best on the market is the MRCOOL single stage, 80% AFUE gas furnace. This system can be installed down flow, and is designed to operate for decades, provide powerful heating capability, and, best of all, keep your heating bill affordable at the same time. It does the latter via its 80% AFUE energy efficiency rating. That mark of quality ensures 80% of every dollar you spend on heating fuel gets turned into real, effective heat for your home.

Key Features

  • Easily removable slide out blower design
  • Registered 10-year parts warranty
  • Rotatable draft inducer for venting flexibility
  • Downflow furnace
  • Heating efficiency of 80% AFUE
  • AHRI Certified
  • LP kit not included
  • Aluminized steel tapered crimped non-welded clam shell heat exchanger design
  • Compact 33" height
  • Left or right utility connections
  • Multi-speed high efficiency (constant torque) blower motor
  • Zero step horizontal conversion
  • 80%


Product Dimensions 14 1/2"W x 28 3/8"D x 33"H
Product Weight 113 lbs
Unit Type Gas Furnace
AFUE 80%
CFM 1275
Tonnage 3
Heating Capacity 44,000 BTU
Fuel Type Natural Gas
BTU Input 44000
BTU Output 35200
Voltage Requires a minimum of 120V/60HZ/15A
Phase 1
Cycle 60
Stage Single
Max Fuse Breaker 15
Min Circuit Ampacity 6.8
Color Gray
Full Load 6.8
Number of Burners 4
Gas Connection Size 1/2
Blower Motor Type ECM
Blower Motor HP 1/2
Blower Motor Speeds 5 Speed
Blower Motor RPM 565-1275
Heat Exchanger Type Aluminized steel
Ignition Type Silicon Nitride Ignitor
Vent Connector 4 inch
LP Kit Available Yes
Certifications CSA
Warranty Registered 10 Year Parts Warranty

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MRCOOL 80% AFUE 3 Ton 45,000 BTU Downflow Multi-Speed Gas Furnace, MGD80SE045A3A

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Save $232.00
Original Price $1,441.00
Current Price $1,209.00

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