Review
Goodman's 4-ton upflow system positions itself as a workhorse solution for residential HVAC replacements. The combination of 96% AFUE heating efficiency and 16 SEER cooling places it squarely in the mid-efficiency segment that contractors favor for value-conscious customers. At 48 pounds with compact 30x21x21 dimensions, installation fits most standard upflow applications. The unit operates on standard 208/230V single-phase power and uses R410A or R22 refrigerant compatibility.
Performance-wise, this system delivers where it counts. The furnace generates 100,000 BTU heating output with two-stage burner capability for modulated comfort during partial-load conditions. Cooling reaches 45,500 BTU through a scroll compressor with maximum airflow of 1,600 CFM from the ECM blower motor. The 16 SEER rating translates to real summer savings, though the single-stage condenser means it runs at full capacity once cooling kicks in. PVC exhaust venting simplifies installation in contemporary home designs.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating bills significantly compared to 80-90% models
- 16 SEER cooling rating delivers strong summer performance for 4-ton applications
- ECM multi-speed blower motor optimizes airflow while reducing energy consumption
- Two-stage gas burner provides modulating heating for improved comfort and efficiency
- PVC exhaust flue compatibility simplifies venting in modern home configurations
- 10-year warranty with online registration covers parts and provides peace of mind
Cons
- Single-stage condenser limits cooling modulation compared to two-stage competitors
- 73 dB noise level runs louder than premium variable-capacity units during operation
- Specs show 5-ton tonnage rating but product title claims 4-ton, creating potential confusion on capacity
Who Should Buy
Best For
Contractors replacing aging furnace-AC combos in homes without premium budget allocations will find strong value here. Homeowners in moderate climates wanting efficient heating and cooling without luxury features should consider this system.
Consider Alternatives If
Skip this if you need variable-stage cooling technology, minimal noise operation, or live in extreme hot climates where maximum AC capacity matters daily.
Installation
This upflow configuration requires standard ductwork preparation and proper electrical service verification. The 40-amp maximum breaker requirement fits most residential panels without upgrades. Refrigerant lines use 3/8-inch liquid and 1 1/8-inch suction sizing with 50 feet of included insulated line. PVC flue venting from the right side integrates easily with modern venting standards. Technicians should verify furnace placement accommodates upflow airflow direction before installation begins.
Warranty & Reliability
Goodman backs this system with a full 10-year parts warranty once you complete online registration. This coverage spans the furnace, condenser, and included evaporator coil, providing substantial protection for residential applications. Registration is straightforward and activates immediately upon completion. For contractors, this warranty period aligns with typical customer retention cycles and simplifies service callbacks.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi-Speed - ECM |
| Maximum CFM | 1600 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Gas |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF 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. |
| Replaces | GSX16S481 |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 40 amps |
| Min. Breaker Size | 23.9 amps |
| Tonnage | 5 Ton |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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