Description
MRCOOL Signature Series 80% AFUE 70,000 BTU Gas Furnace
Upflow/Horizontal installation, 3-Speed PSC motor. Reliable, efficient gas heating for central ducted systems. Pairs with Signature Series condensers and air handlers.
Solution Statement
The MRCOOL Signature Series 80% AFUE 70,000 BTU Gas Furnace (MGM80SE070B3A) delivers dependable, high-efficiency heating for central ducted HVAC systems. With a 80% Annual Fuel Utilization Efficiency (AFUE) rating, this furnace converts 80% of the fuel it consumes directly into usable heat — significantly reducing energy waste compared to older 80% AFUE models. Designed for upflow/horizontal installation, it pairs seamlessly with MRCOOL Signature Series condensers and multi-position air handlers to create a complete, AHRI-certified central HVAC system. The 3-speed psc motor provides quiet, efficient airflow management across a wide range of duct configurations. An optional LP conversion kit (MLP1PSA, sold separately) allows conversion from natural gas to propane.
Technical Specifications
| Specification | Value |
|---|---|
| Model / SKU | MGM80SE070B3A |
| Series | Signature Multi-Position 80% AFUE Furnace |
| Heating Capacity | 70,000 BTU/hr (2 Ton) |
| AFUE Rating | 80% |
| Installation Position | Upflow/Horizontal |
| Motor Type | 3-Speed PSC |
| Fuel Type | Natural Gas (LP conversion kit available) |
| Gas Pressure (Nat. Gas) | 3.5" W.C. (inlet), 3.5" W.C. (manifold) |
| Electrical | 120V / 60Hz / 1-Phase |
| Ignition | Hot Surface Ignition (HSI) |
| Certifications | AHRI Certified, CSA Certified |
| Weight | 95.0 lbs (43.1 kg) |
| AHRI Reference | Available upon request |
Product Tips
- Requires professional installation by a licensed HVAC technician and gas fitter. Improper installation voids the warranty and creates safety hazards.
- This furnace is designed for natural gas. For propane (LP) use, purchase the MRCOOL Signature LP Kit (MLP1PSA) for conversion — sold separately.
- Pair with a MRCOOL Signature Series multi-position air handler and condenser for a complete AHRI-certified system with matched efficiency ratings.
- Ensure proper venting is installed per local codes. This furnace requires Category I venting (negative pressure, non-condensing) with appropriate flue pipe sizing.
- Annual maintenance is recommended — replace the air filter every 1–3 months and schedule a professional tune-up each heating season for optimal performance and warranty compliance.
Frequently Asked Questions
Our HVAC specialists can verify AHRI compatibility and answer installation questions.
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