Quick answers to questions about ordering, compatibility, and installation.
Efficient Heat. Dependable Performance. Built for Winter.
The MRCOOL MGM80SE070B3A is a rugged, high-performance 3 Ton, 70,000 BTU gas furnace designed to deliver dependable heating in upflow or horizontal configurations. With an 80% AFUE rating, this single-stage system ensures that 80 cents of every fuel dollar go directly to warming your home—helping reduce energy costs without sacrificing comfort.
Engineered for easy installation and long-lasting durability, this furnace features a compact 33" height, a high-efficiency 5-speed ECM blower motor, and flexible utility connections for left or right setup.
⚠️ Note: Not available for sale in California due to state efficiency regulations.
80% AFUE Efficiency Rating
Converts 80% of fuel into usable heat—ideal for cost-effective winter comfort.
Powerful 70,000 BTU Heating
Covers medium-to-large spaces with consistent, even heat output.
Versatile Installation Options
Compatible with upflow and horizontal configurations; includes removable floor base for bottom return.
Quiet ECM Blower Motor
5-speed constant torque motor maintains airflow while keeping operation quiet and efficient.
Durable, Long-Lasting Build
Includes aluminized steel inshot burners and a tapered crimped (non-welded) clam shell heat exchanger.
Rotatable Draft Inducer & Utility Access
Left or right utility hookups and flexible venting design simplify installation.
Easy Maintenance Access
Slide-out blower assembly makes service and cleaning fast and hassle-free.
Certified & Covered
AHRI and CSA certified for safety and performance. Backed by a 10-year registered parts warranty.
PRODUCT SPECIFICATIONS:
| Product Dimensions | 17 1/2'W x 28 3/8'D x 33'H |
| Product Weight | 127 lbs |
| Unit Type | Gas Furnace |
| AFUE | 80% |
| CFM | 1245 |
| Tonnage | 3 |
| Heating Capacity | 66,000 BTU |
| Fuel Type | Natural Gas |
| BTU Input | 66,000 |
| BTU Output | 52,800 |
| 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 | 6 |
| Gas Connection Size | 0.5 |
| Blower Motor Type | ECM |
| Blower Motor HP | 1/2 |
| Blower Motor Speeds | 5 Speed |
| Blower Motor RPM | 695-1245 |
| Heat Exchanger Type | Aluminized steel |
| Ignition Type | Silicon Nitride Ignitor |
| Vent Connector | 4 inch |
| LP Kit Available | Yes |
| Certifications | CSA AHRI |
| Warranty |
Registered 10 Year Parts Warranty |
| Restricted States | Yes (California) |
Quick answers to questions about ordering, compatibility, and installation.
Yes. Freedom HVAC Supply sells HVAC equipment and parts to contractors, property owners, and qualified DIY installers. Some products may require professional installation based on local codes.
Product pages include specifications and compatibility details. If you’re unsure, our team can help verify fit before you order.
Absolutely. We work with licensed HVAC contractors, installers, and professionals nationwide.
Some HVAC equipment must be installed by a licensed professional to meet code requirements or warranty terms. Always review manufacturer guidelines.
Yes. Our support team can assist with product selection based on your application, space, and installation needs.
Manufacturer installation guides and documentation are included or available upon request for most products.
Most HVAC equipment includes a manufacturer warranty when installed according to guidelines. Warranty terms vary by brand and product.
Yes. We ship HVAC systems and parts throughout the continental United States using trusted freight and parcel carriers.
Larger HVAC equipment ships via freight and should be inspected upon delivery. Delivery details are provided during checkout.
Get help with ordering, compatibility, or installation questions.
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