Review
The Goodman 4-ton system at $2,053 sits squarely in the economy equipment segment, targeting contractors and homeowners who prioritize upfront cost over long-term efficiency gains. This configuration pairs an 80% AFUE furnace with a 16 SEER air conditioner in an upflow cabinet measuring 30 inches tall by 21 inches wide. For new construction or straightforward replacements in moderate climates, this unit delivers baseline performance without the premium pricing of high-efficiency alternatives. The two-stage burner and variable-speed blower suggest Goodman included some operational refinement despite the entry-level price.
The furnace generates 80,000 BTU heating output across two burner stages, which adapts reasonably well to part-load conditions during milder weather. The air conditioning side delivers 45,500 cooling BTU using R410A refrigerant through a scroll compressor, achieving 16 SEER cooling efficiency. A 2,000 CFM maximum airflow capacity suits homes under 2,000 square feet when properly ducted. The 73 dB noise level at peak operation is moderately loud compared to inverter-driven competitors, but acceptable for basement or attic installations away from living spaces.
Pros & Cons
Pros
- 80% AFUE furnace with two-stage burners improves comfort and reduces short cycling compared to single-stage competitors
- 16 SEER cooling efficiency qualifies for Energy Star certification, lowering utility bills in hot seasons
- Variable speed blower motor handles both upflow and horizontal configurations, offering installation flexibility
- 10-year warranty with online registration provides reasonable peace of mind for the price tier
- Metal exhaust flue requirement is standard and less restrictive than some premium alternatives
Cons
- 80% AFUE means 20% heat loss up the chimney, making it outdated compared to 95%+ AFUE units available today
- 73 dB noise level at maximum output is noticeably louder than high-efficiency variable-stage furnaces
- 5-ton tonnage rating with 45,500 cooling BTU creates an undersized pairing for larger homes requiring true 4-ton cooling capacity
Who Should Buy
Best For
Homeowners in regions where 80% AFUE meets code and who need to stay under $2,100 for a complete system replacement. This works well for smaller homes (1,200-1,800 sq ft) in moderate climates where peak heating loads don't demand maximum capacity.
Consider Alternatives If
Anyone in cold climates, high-efficiency requirement zones, or those replacing failed systems in homes larger than 2,000 sq ft should look at 95% AFUE condensing furnaces instead.
Installation
The upflow configuration fits standard return-air plenums in basement or mechanical closet installations. Mounting requires 208/230V single-phase 60 Hz electrical service with 23.9 to 40 amp breaker capacity, which most homes already provide. Refrigerant lines need 3/8-inch liquid and 1 1/8-inch suction connections with 1/2-inch insulation thickness over 50 feet maximum. Metal exhaust flue is required, but this is standard and less problematic than PVC restrictions on some efficiency tiers.
Warranty & Reliability
The 10-year warranty covering compressor, parts, and labor requires online registration to activate. This is solid coverage for the price segment, though it's shorter than some manufacturers offering 12-year terms. Labor coverage typically covers installation defects, while parts coverage addresses manufacturing failures. Document your registration immediately upon installation to avoid coverage gaps.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 80,000 |
| 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 | 204633302 |
| 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 | 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 |
| Energy Star | Yes |
| 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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