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| Furnaces |
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| AFUE | Heating Capacity (Btuh) | Gas Furnace Model | Description | Series | | 96% | 40,000 - 120,000 | 58MVP | Variable Speed Gas Furnace | Infinity | | 93% | 60,000 - 120,000 | 58MTA | 2-Stage Gas Furnace | Performance | | 95% | 38,000 - 128,000 | 58MXA | Gas Furnace | Comfort | | 92% | 37,000 - 127,000 | 58MCA | Gas Furnace | | | 90% | 37,000 - 111,000 | 58MSA | Gas Furnace | | | 80% | 66,000 - 154,000 | 58CVA | Variable Speed Gas Furnace | Infinity | | 80% | 66,000 - 154,000 | 58CVX | Variable Speed Low-NOx Gas Furnace | Infinity | | 80% | 44,000 - 154,000 | 58CTA | 2-Stage Gas Furnace | Performance | | 80% | 44,000 - 154,000 | 58CTX | 2-Stage Low-NOx Gas Furnace | Performance | | 80% | 44,000 - 154,000 | 58DLA | Gas Furnace | Comfort | | 80% | 44,000 - 154,000 | 58DLX | Low-NOx Gas Furnace | Comfort | | 80% | 44,000 - 154,000 | 58STA | Gas Furnace | | | 80% | 44,000 - 154,000 | 58STX | Low-NOx Gas Furnace | | |
| AFUE | Heating Capacity (Btuh) | Oil Furnace Model | Description | Series | | 80%+ | 70,000 - 154,000 | 58CLA | Lowboy Upflow Furnace | Comfort | | 80%+ | 70,000 - 154,000 | 58CLR | Lowboy Upflow Furnace | Performance | | 80%+ | 70,000 - 154,000 | 58CMA | 4-Way Multipoise Furnace | Comfort | | 80%+ | 70,000 - 154,000 | 58CMR | 4-Way Multipoise Furnace | Performance | |
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