Review
The Goodman 4-ton split system represents the middle ground in residential HVAC, offering solid performance without the premium cost of top-tier equipment. Online Supply positions this model as a practical solution for contractors managing replacement projects and homeowners seeking Energy Star compliance without extensive budget allocation. The 80,000 BTU heating capacity and 45,500 BTU cooling capacity address standard residential loads across moderate climate zones.
Performance metrics show competent but not exceptional efficiency. The 80% AFUE furnace efficiency is respectable baseline performance, while the 16 SEER cooling rating delivers genuine energy savings compared to older 13 SEER units from a decade ago. The two-stage burner cycles intelligently between heating demands, and the high-efficiency multi-speed blower adjusts CFM output between 0 and 2000 CFM, reducing ductwork noise and improving comfort during part-load operation. Running at 73 dB, noise output is audible in nearby living spaces.
Pros & Cons
Pros
- Energy Star certified with 16 SEER on the cooling side, qualifying for utility rebates in most regions
- Two-stage burner for heating efficiency at 80% AFUE, reducing runtime and gas consumption during mild weather
- High-efficiency multi-speed blower motor adapts to heating and cooling loads more effectively than single-speed alternatives
- 10-year parts warranty with online registration provides reasonable peace of mind without premium pricing
- Compact dimensions (30 inches tall, 21 by 21 inches footprint) fit tight utility closets and basement installations
- Scroll compressor technology known for durability and consistent performance across varying load conditions
Cons
- 80% AFUE falls behind modern 95%+ condensing furnaces, meaning higher heating costs over 15-year lifespan
- Single-stage condenser limits part-load efficiency during mild cooling days when full capacity isn't needed
- 73 dB noise level runs audibly loud, potentially noticeable in quiet bedrooms near furnace location
- 40-amp maximum breaker requirement demands proper electrical infrastructure in older homes with limited panel capacity
Who Should Buy
Best For
Contractors installing replacement systems where existing infrastructure is compatible and homeowners needing reliable equipment without paying for premium efficiency tiers. This unit suits rental properties, secondary residences, or primary homes in moderate climates where annual heating and cooling seasons are balanced.
Consider Alternatives If
Anyone in cold climates prioritizing heating efficiency should investigate 95% AFUE condensing furnaces instead. Homes with noise sensitivity concerns or those seeking 20+ SEER cooling performance need higher-tier equipment.
Installation
This upflow configuration requires vertical clearance and works in basements, utility closets, and attics with proper return air pathways. The 208/230V single-phase requirement is standard residential electrical, though the 40-amp maximum breaker size demands adequate panel capacity. Metal exhaust flue venting is required. Technicians should budget extra time securing the 48-pound unit and connecting refrigerant lines (3/8-inch liquid, 1 1/8-inch suction) with proper insulation thickness at 1/2 inch.
Warranty & Reliability
The 10-year parts warranty requires online registration and covers manufacturing defects in compressor, heat exchanger, and blower motor components. Goodman's warranty is industry-standard, not extended coverage. This provides reasonable protection during the critical first decade of operation, though labor costs remain the homeowner's responsibility after the first year in most cases.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 80,000 |
| 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 | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | High Efficiency Multi-Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| 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 |
| 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 |
| 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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