Review
Goodman's 4-ton upflow system arrives as a solid mid-tier option for contractors and homeowners seeking balanced heating and cooling without premium pricing. The 96% AFUE furnace positions this unit well against competitors still selling 90-92% models, while the 15 to 16 SEER cooling performance stays competitive for moderate climates. SKU LS381183850 carries AHRI certification 7368842 and Energy Star qualification, signaling compliance with current efficiency standards.
The furnace delivers 120,000 BTU of heating capacity with two-stage burner control, while the condenser side produces 45,500 BTU cooling via a single-stage scroll compressor running on R410A refrigerant. Variable-speed ECM blower handles up to 2000 CFM across upflow or downflow applications. At 208/230V single-phase 60 Hz and requiring 23.9 to 40 amp breaker sizing, most homes accept this without panel modifications.
Pros & Cons
Pros
- 96% AFUE furnace efficiency significantly reduces natural gas consumption and heating costs year-over-year
- Variable-speed ECM blower motor optimizes airflow from 0 to 2000 CFM, improving comfort and lowering electricity use
- Two-stage burner and single-stage compressor provide reliable, predictable performance without short cycling
- PVC/plastic exhaust flue compatibility simplifies venting and reduces installation costs versus rigid metal ducts
- 10-year warranty with online registration covers parts and compressor, protecting your investment
Cons
- SEER rating listed as 16 in specs but product title claims 15 SEER, creating specification confusion at point of purchase
- 73 dB noise level at full capacity may be noticeable during evening operation in quiet neighborhoods
- Single-stage condenser limits variable cooling, resulting in less precise temperature control than two-stage systems
Who Should Buy
Best For
Homeowners in northern climates replacing aging 80-85% AFUE furnaces will see immediate utility savings. Contractors seeking straightforward residential installs with modern efficiency and rebate eligibility will appreciate the A-coil configuration and ECM motor.
Consider Alternatives If
Buyers in cooling-dominant climates or those seeking highest-efficiency cooling should consider two-stage condenser systems instead.
Installation
Installation requires standard refrigerant lines (3/8 inch liquid, 1 1/8 inch suction with 1/2 inch insulation) up to 50 feet. PVC exhaust flue compatibility eliminates expensive metal venting. The unit measures 30 by 24.5 by 21 inches and weighs 48 pounds, fitting standard cabinet openings. Electrical work remains straightforward for licensed installers.
Warranty & Reliability
Ten-year parts and compressor coverage applies with online registration, standard for Goodman residential systems. This protects against manufacturing defects across the furnace heat exchanger, compressor, and major components. Labor costs fall to the homeowner or installer, typical for industry-wide HVAC warranties.
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 | CAPT Installation Manual CAPT 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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