Review
The Goodman 4-ton gas furnace and air conditioner system occupies the practical middle ground of the residential HVAC market. At the budget-friendly price point, this upflow unit targets contractors and homeowners seeking straightforward replacement without premium efficiency costs. The SKU LS381183850 represents Goodman's no-frills approach, delivering competent heating and cooling without the energy-saving features found in higher-tier systems.
Performance specs reveal a competent but older-generation system. The 80% AFUE furnace generates 100,000 BTU heating output, while the air conditioner delivers 48,000 BTU cooling capacity at 13 SEER. The two-stage burner and variable-speed 2000 CFM blower motor improve comfort versus single-stage competitors, but the single-stage condenser limits cooling efficiency on partial-load days. At 76 dB, operating noise remains acceptable for residential installations.
Pros & Cons
Pros
- Two-stage burner improves heating efficiency compared to single-stage alternatives, reducing short-cycling
- Variable-speed blower motor with 2000 CFM maximum capacity allows better zoning and comfort control
- Upflow/horizontal configuration fits most homes without requiring extensive ductwork modifications
- 10-year warranty with online registration provides reasonable protection for the price point
- Reciprocating compressor design is proven reliable and widely serviced by local technicians
Cons
- 80% AFUE falls below modern efficiency standards, costing more annually to operate than 95% AFUE alternatives
- 13 SEER rating is outdated terminology; 13 SEER1 equals roughly 10.5 SEER2, significantly lower than current 16+ SEER2 units
- Single-stage condenser limits cooling modulation on mild days, reducing comfort and efficiency
Who Should Buy
Best For
Budget-focused homeowners in moderate climates replacing 15-plus-year-old systems want solid equipment without premium pricing. Contractors installing budget packages for rental properties or cost-sensitive customers will appreciate the balance of reliability and affordability.
Consider Alternatives If
Energy-conscious homeowners or those in hot climates should look at 95%+ AFUE furnaces and 16+ SEER2 units to minimize long-term operating costs.
Installation
Installation straightforward for experienced contractors familiar with Goodman equipment. The unit measures 30 by 21 by 21 inches, fitting standard closet and basement spaces. Requires metal exhaust flue, 208/230V single-phase 60Hz power supply, and proper refrigerant line sizing at 3/8 inch liquid and 1 1/8 inch suction lines. Variable-speed motor wiring adds minor complexity but remains within standard contractor scope.
Warranty & Reliability
The 10-year parts warranty requires online registration, which is typical for current Goodman products. This covers manufacturing defects but excludes labor costs. For a budget-tier system, ten years provides reasonable protection. Evaporator coil coverage follows Goodman's standard terms. Actual coverage scope depends on installer registration timing and proper maintenance documentation.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 48,000 |
| 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) | 76 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| 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. |
| 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 |
| 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. |
| Replaces | GSX130483, GSX130484, GSX130485 |
| Energy Star | No |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Liquid Valve Size | 3/8" |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 26.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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