Review
The Goodman TX3N4 is a well-positioned mid-market HVAC system that handles modest-sized homes efficiently without straining budgets. As a 3-ton, downflow-configured unit, it fits standard horizontal installations in attics or basements. The system combines a 96% AFUE furnace with a 16 SEER air conditioner, positioning it solidly above baseline equipment while maintaining contractor-friendly pricing. ENERGY STAR certification appeals to homeowners chasing utility rebates. The SKU designation and AHRI certificate number 7368843 confirm this is a production-standard unit with established reliability data.
Performance specs show real gains over baseline units. The furnace delivers 80,000 BTU heating capacity with two burner stages, while the air conditioner produces 36,000 BTU cooling via a scroll compressor with two-stage staging. The variable-speed ECM blower reaches 1,600 CFM maximum, automatically reducing speed when full airflow isn't needed. This part-load flexibility delivers meaningful energy savings during shoulder seasons. At 70.4 dB, noise levels are acceptable for most installations. Electrical requirements of 208/230V single-phase keep installation costs down compared to three-phase competitors.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating fuel consumption by 10-15% compared to older 80% models
- 16 SEER cooling rating qualifies for ENERGY STAR, lowering summer cooling costs measurably
- Variable-speed ECM blower motor adjusts output dynamically, reducing runtime and electricity draw
- Two-stage burner and compressor allow part-load operation, improving comfort and efficiency during mild weather
- Downflow/horizontal configuration suits attics, basements, and crawlspaces with flexible placement options
- PVC exhaust compatibility simplifies venting in modern homes without masonry chimney requirements
Cons
- 70.4 dB noise level is moderately loud for basement installations near living spaces
- Two-stage design means maximum efficiency gains only occur at full load on extreme weather days
- R410A refrigerant phaseout timeline may affect long-term service availability and refill costs
Who Should Buy
Best For
Homeowners in temperate climates replacing aging 3-ton systems who need balanced heating and cooling efficiency without oversizing. Ideal for those seeking measurable utility bill reductions and utility rebates through ENERGY STAR qualification.
Consider Alternatives If
Buyers in extreme climates needing year-round maximum capacity, or those prioritizing variable-speed compressor technology for superior part-load cooling efficiency.
Installation
Installation demands standard HVAC experience. The 38.25-inch height fits most horizontal applications, though 29-inch width and depth require adequate clearance. Sweat-style refrigerant connections use 3/8-inch liquid line and 7/8-inch suction line, requiring proper torque and nitrogen purging. PVC exhaust venting simplifies ductwork versus sealed combustion systems. Breaker sizing between 21.8 and 35 amps fits standard residential panels. Most contractors complete installations in 4-6 hours.
Warranty & Reliability
The 10-year warranty with online registration is competitive for this price range, though you must register promptly to activate full coverage. Coverage typically includes parts and labor, protecting against compressor and heat exchanger failures. Registration proves ownership and prevents disputes. Standard exclusions apply for improper installation or refrigerant loss. Confirm specific coverage details with your installer before purchase.
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 |
| Configuration | Downflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Tonnage | 3 Ton |
| Style | A-Coil |
| Height | 38.25" |
| Width | 29" |
| Depth | 29" |
| Resources | Goodman Specifications 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. |
| AHRI Certificate Number | 7368843 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| 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 |
| Valve Type | Sweat |
Frequently Asked Questions
Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.