Review
The Goodman 3-ton gas furnace and air conditioner system at $2142 occupies the practical middle ground for residential HVAC. This horizontal-configuration unit bundles both heating and cooling components, making it attractive for new construction or complete system replacement. With AHRI certification and Energy Star qualification, it meets modern efficiency standards while maintaining the affordability that Goodman is known for in the contractor community.
Performance-wise, the 36,000 BTU cooling capacity pairs with a 16 SEER1 rating, delivering solid efficiency for most residential applications. The furnace side generates 80,000 BTU at 80% AFUE, which is standard efficiency for this price tier. Two-stage operation on both the burner and condenser prevents short-cycling and delivers better comfort than single-stage alternatives. The variable-speed ECM blower, running up to 2000 CFM, adapts to ductwork while keeping run times efficient.
Pros & Cons
Pros
- 16 SEER cooling efficiency qualifies for Energy Star certification and AHRI listing 204633302
- Two-stage burner and two-stage condenser enable better part-load efficiency and temperature control
- Variable-speed blower motor with 2000 CFM maximum provides flexibility for ductwork design
- Dual fuel capability handles both natural gas and propane without modification
- 10-year warranty with online registration covers manufacturing defects at no cost
Cons
- 80% AFUE is baseline for modern furnaces, not high-efficiency compared to 95% AFUE units
- 70.4 dB noise level runs louder than premium inverter-driven competitors
- Horizontal configuration limits placement options for some retrofit installations
Who Should Buy
Best For
Contractors and homeowners replacing older systems in mixed-climate regions where balanced heating and cooling matter equally. This unit performs well in moderate climates where heating demand justifies the fuel type flexibility and two-stage design.
Consider Alternatives If
Buyers in very hot climates needing only cooling efficiency, or those prioritizing quiet operation and maximum SEER ratings should explore 18+ SEER units.
Installation
This horizontal unit requires 208/230V single-phase 60Hz power with a 21.8 to 35 amp breaker sized appropriately. Dimensions of 21 by 21.125 by 26 inches fit standard attic or basement spaces. Metal exhaust flue is required, and refrigerant line sizes are 3/8-inch and 7/8-inch with sweat fittings. Installation manuals are provided, though professional installation is strongly recommended.
Warranty & Reliability
The 10-year parts warranty activates with online registration at no additional cost. Coverage protects against manufacturing defects but excludes wear items and service calls. Goodman's warranty structure is competitive for this price point and provides reasonable peace of mind for homeowners expecting 15-year system life.
Specifications
| SKU | TX3N4 |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 36,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 70.4 |
| Weight (in lbs) | 2.500000 |
| Feature | Spec |
| AHRI Certificate Number | 204633302 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Variable Speed |
| Maximum CFM | 2000 |
| Configuration | Horizontal |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 21" |
| Width | 21.125" |
| Depth | 26" |
| Resources | CHPF Installation Manual CHPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 21.8 amps |
| Tonnage | 3.5 Ton |
| Valve Type | Sweat |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
Frequently Asked Questions
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