Review
Goodman continues to dominate the value HVAC market with systems that balance efficiency, performance, and price. This 4-ton gas furnace and air conditioner combination delivers 100,000 BTU heating output with 96% AFUE efficiency, positioning it well above budget basement models while remaining accessible to cost-conscious buyers. The system carries AHRI certification 7368836 and qualifies for Energy Star recognition, signaling compliance with modern efficiency standards. At $117 for the furnace component alone, this represents genuinely competitive pricing for contractors and homeowners alike.
Performance metrics tell a solid story. The variable-speed ECM blower motor adjusts its 2000 CFM maximum capacity to match heating and cooling demand, reducing wasted energy during part-load conditions. Two-stage burner operation keeps the 100,000 BTU furnace running efficiently most of the time. The air conditioner side produces 45,500 BTU cooling at a stated 16 SEER rating (though marketing claims 15 SEER), using R410A refrigerant and a scroll compressor. The entire assembly runs at 73 dBA, making it quieter than many competing models. Electrical requirements of 208/230V single-phase 60Hz with 23.9 to 40 amp breaker sizing fit standard residential panels.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating costs by approximately 4% compared to 92% models
- Variable-speed ECM blower motor automatically adjusts airflow, cutting energy consumption versus single-stage units
- Energy Star certified system with rebate eligibility in many utility districts
- Two-stage burner and scroll compressor provide quiet operation at 73 dBA
- PVC/plastic flue exhaust eliminates expensive masonry chimney requirements during installation
Cons
- SEER rating shows as 16 in specs but headline states 15 SEER, creating specification confusion
- 5-ton condenser unit oversized for typical 4-ton furnace pairing may cause inefficiency
- Single-stage condenser limits part-load efficiency during mild weather operation
- Limited documentation available, only basic installation manual provided
Who Should Buy
Best For
Homeowners replacing an older gas furnace in moderate climates, or contractors building affordable comfort systems for price-sensitive customers. The 96% AFUE and variable-speed blower justify the modest investment through lower utility bills over 10 years.
Consider Alternatives If
Anyone in extreme cold climates needing maximum heating capacity, or homes with existing 3-ton or smaller ductwork should avoid this unit due to potential sizing mismatches.
Installation
Installation proves straightforward for experienced technicians. The upflow configuration works with both standard upflow and horizontal applications, offering flexibility in equipment room placement. PVC plastic flue venting eliminates costly masonry chimney work, reducing labor significantly. The 30-inch height by 21-inch width and depth fit standard equipment closets. Total system weight of 48 pounds aids handling. Refrigerant lines require 3/8-inch liquid and 1 1/8-inch suction connections with 1/2-inch insulation thickness on the suction line.
Warranty & Reliability
Goodman provides a standard 10-year parts warranty when you complete online registration, which is industry standard for this price tier. This covers furnace heat exchanger and compressor failures, offering legitimate peace of mind. No labor coverage applies, so homeowners pay service calls separately. Ten years provides reasonable protection for typical equipment lifespan in moderate climates.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| 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) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| AHRI Certificate Number | 7368836 |
| 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 | 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 |
| 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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