Review
The Goodman 4-ton combo system sits squarely in the value segment of the HVAC market. At $2170, this unit bundles a gas furnace and air conditioning condenser into a practical solution for homeowners who need both seasonal comfort without premium pricing. Online Supply positions this as a replacement for the GSX16S481, targeting contractors and DIYers restocking rental properties or managing budget renovation projects.
Cooling capacity arrives at 45,500 BTU with a 15 SEER rating, meaning it qualifies for Energy Star certification. On the heating side, the two-stage burner produces 80,000 BTU with 80 percent AFUE efficiency. The variable speed blower motor maxes out at 2000 CFM and runs at a reasonable 73 decibels. Electrical requirements are modest at 120V single-phase with 23.9 to 40 amp breaker sizing, making installation straightforward in most homes.
Pros & Cons
Pros
- Two-stage burner furnace provides better heating comfort and efficiency than single-stage alternatives, reducing temperature swings
- Variable speed blower motor automatically adjusts airflow for quieter operation at 73 dB and improved efficiency
- 15 SEER cooling rating qualifies for Energy Star certification, saving money versus older 13 SEER systems
- 80 percent AFUE furnace is solid for budget builds and acceptable in most climates
- Compact 21 by 21 by 30 inch footprint works in tight utility closets or crawlspaces
- 10-year parts warranty with online registration provides reasonable long-term protection
Cons
- Product description lists 4 tons but specs show 5 ton tonnage, creating confusion about actual cooling capacity
- Single-stage compressor cannot modulate capacity, running at full power even during mild weather, wasting energy
- 80 percent AFUE lags behind high-efficiency condensing furnaces at 95+ percent, costing more to operate annually
- 15 SEER is respectable but not exceptional, trailing newer 16-18 SEER systems by meaningful margins
- Limited refrigerant compatibility with older R22 reduces future service flexibility as R22 phases out
Who Should Buy
Best For
Homeowners in moderate climates prioritizing upfront affordability over long-term energy savings, and contractors building budget-conscious systems for rental properties or price-sensitive customers. This unit makes sense when a client wants reliable heating and cooling without premium efficiency pricing.
Consider Alternatives If
Buyers in hot climates should consider higher SEER options, and anyone planning to stay 15+ years should invest in 95+ AFUE furnaces to recover costs through utility savings.
Installation
This upflow A-coil unit requires a metal exhaust flue and fits compact spaces at 21 by 21 by 30 inches. The variable speed blower simplifies ductwork integration, while 3/8 inch liquid and 7/8 inch suction lines are standard sizes. Installation typically takes 4 to 6 hours for experienced technicians, though homeowners should verify local permitting requirements before beginning work.
Warranty & Reliability
Goodman includes a 10-year parts warranty when you register online, covering most internal components but typically excluding wear items and labor. Registration is straightforward through Goodman's website. This warranty duration is competitive for budget systems, though premium brands sometimes offer 12-year coverage. Document your serial number and installation date immediately.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 120 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| Replaces | GSX16S481 |
| Energy Star | Yes |
| 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 |
| 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. |
| AHRI Certificate Number | 204633302 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Variable Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| 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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