Review
The Goodman 4-ton gas furnace and air conditioner system positions itself as an efficient, budget-conscious choice for residential HVAC replacement. This upflow-configured unit combines 120,000 BTU heating capacity with 45,500 BTU cooling in a single integrated package. Online Supply's SKU LS381183850 carries AHRI certification number 7368842, confirming manufacturer testing and cross-compatibility with matched indoor coils. The system qualifies for ENERGY STAR recognition and supports both natural gas and propane fuels, making it adaptable to most North American residential installations.
Performance metrics demonstrate solid real-world capability. The 96% AFUE rating means nearly all fuel combustion converts to usable heat, reducing winter heating costs by 10-15% versus baseline 80% units. The 16 SEER cooling efficiency delivers approximately 20-30% better cooling energy use than decade-old systems. A variable-speed ECM blower motor with 2,000 CFM maximum airflow manages temperature swings smoothly rather than relying on crude on-off cycling. Two-stage burner operation prevents overshooting and undershooting setpoints, maintaining comfort while minimizing fuel consumption during shoulder seasons.
Pros & Cons
Pros
- 96% AFUE furnace efficiency means minimal heating fuel waste, translating to roughly 4-cent savings per heating dollar compared to 80% units
- 16 SEER cooling rating exceeds ENERGY STAR requirements and qualifies for federal tax credits in many states
- Variable-speed ECM blower motor adjusts airflow automatically, improving comfort and reducing runtime energy consumption
- Two-stage burner operation prevents short-cycling and maintains steady home temperature without dramatic on-off cycles
- Compact footprint at 30 inches tall fits standard closet and utility space installations with minimal ductwork modifications
Cons
- Single-stage compressor limits part-load cooling efficiency compared to two-stage models in variable climate zones
- 73 dB noise level during operation is noticeable and may concern noise-sensitive households or bedside installations
- PVC exhaust flue requirement adds material cost and limits installation flexibility in homes with masonry chimneys
Who Should Buy
Best For
Homeowners replacing older 80-85% AFUE systems who want measurable energy bill reduction without luxury pricing. Contractors serving moderate-climate markets will appreciate the straightforward installation and reliable Goodman compressor technology.
Consider Alternatives If
Anyone in exclusively heating-dominant climates should compare modulating furnaces, and buyers needing ultra-quiet operation should consider premium brands with sound-dampening chambers.
Installation
Installation demands standard HVAC training and tools. The system requires 208/230 volt single-phase 60 Hz power with breaker protection between 23.9 and 40 amps, typical for most homes. PVC plastic exhaust flue is mandatory, requiring trenching or sidewall penetration rather than traditional vertical chimney routing. Refrigerant lines use 3/8-inch liquid and 1 1/8-inch suction piping with 1/2-inch insulation thickness over 50-foot maximum run length. Upflow configuration suits basement or utility closet mounting in single-story or multi-story homes.
Warranty & Reliability
Goodman provides 10 years of comprehensive coverage when registered online, protecting compressor, heat exchanger, and major components. This reflects industry-standard protection for mid-tier equipment and suggests confidence in manufacturing quality. Registration is straightforward and typically extends coverage beyond basic manufacturer liability. Parts replacement and labor are contractor responsibilities, so confirm service availability in your region before purchasing.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 120,000 |
| Refrigerant | R410A |
| 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 |
| AHRI Certificate Number | 7368842 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 24.5" |
| 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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