Review
The Goodman 4-ton combination system pairs a 100,000 BTU gas furnace with a 48,000 BTU air conditioning condenser in one upflow-configured package. This A-coil design slots into the mid-range market where contractors appreciate straightforward technology and homeowners value reasonable efficiency without premium costs. The unit measures 34.5 inches tall, 21 inches wide, and 28.75 inches deep, making it compact enough for tight mechanical rooms while delivering adequate capacity for residential applications.
Heating performance reaches 96% AFUE with a single-stage burner, delivering steady warmth throughout winter without the modulation benefits of staged designs. Cooling operates at 13 SEER using a reciprocating compressor and single-stage capacity, adequate for moderate climates but not optimized for extreme heat events. The multi-speed blower motor provides flexibility, reaching up to 2,000 CFM. Electrical requirements are reasonable, needing 26.3 to 45 amps at 115V single-phase 60 Hz, making retrofit installations feasible in many existing homes.
Pros & Cons
Pros
- 96% AFUE furnace delivers excellent heating efficiency, reducing winter gas bills significantly
- 13 SEER cooling provides solid air conditioning performance for moderate climates
- Multi-speed blower motor allows flexible airflow control across 2,000 CFM maximum
- Reciprocating compressor design is proven reliable with straightforward service
- PVC flue compatibility simplifies venting in modern homes without masonry chimneys
- 10-year warranty with online registration covers substantial equipment lifespan
Cons
- Single-stage cooling and heating mean less efficiency at partial load conditions
- 76 dB noise level is moderately loud for a residential unit, noticeable during operation
- Not Energy Star certified, missing potential rebate eligibility in some regions
- R410A or R22 refrigerant options create compatibility questions during replacement cycles
Who Should Buy
Best For
Homeowners and contractors in moderate climates who need a dependable combination system without paying for variable-speed technology. This unit makes sense for basement installations where noise isn't a primary concern and upflow configuration is required.
Consider Alternatives If
Buyers seeking Energy Star rebates, variable-capacity efficiency, or quieter operation should explore alternatives with inverter compressors or two-stage designs.
Installation
This upflow unit requires plastic or PVC flue venting with the outlet positioned on the right side. Installation involves standard sweat connections using 3/8-inch liquid lines and 1 1/8-inch suction lines with 1/2-inch insulation. The 48-pound weight allows two technicians to handle positioning without special equipment. Proper airflow setup through the multi-speed blower and correct refrigerant charge are critical for performance.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty upon online registration. This substantial coverage protects against compressor, motor, and heat exchanger failures during the first decade of ownership. Registration is straightforward and essential, as it activates the extended warranty. Coverage specifics should be verified at purchase since warranties can vary by region or distributor.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 48,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 76 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| 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 |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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. |
| Configuration | Upflow/Horizontal |
| Style | A-Coil |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi Speed |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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