Review
Goodman's gas furnace and air conditioner split system targets the practical middle market where contractors and homeowners balance efficiency with affordability. This particular 5-ton unit combines a 96% AFUE furnace with a 16 SEER1 air conditioner, positioned as a solid upgrade for homes currently running 10-13 year old equipment. Online Supply's configuration includes an A-coil design suited for upflow installation, making it compatible with many existing basement and attic setups.
Cooling output reaches 45,500 BTU using R410A refrigerant and a scroll compressor, while the furnace delivers 80,000 BTU across two burner stages. The variable-speed ECM blower motor spins up to 1,600 CFM, allowing better temperature stratification than single-speed alternatives. At 73 dB, the outdoor unit operates at average noise levels for the class, though not silent. Electrical draw requires a 23.9 to 40 amp breaker, well within standard residential panels.
Pros & Cons
Pros
- 16 SEER1 cooling efficiency exceeds the advertised 15 SEER, delivering strong energy savings on air conditioning costs
- 96% AFUE furnace with two-stage burner minimizes heating fuel waste during shoulder seasons
- Variable-speed ECM blower motor adjusts to actual cooling and heating demand, reducing electricity consumption
- 5-ton capacity with 45,500 BTU cooling and 80,000 BTU heating handles larger homes and moderate climates well
- Lifetime heat exchanger warranty protects against the most expensive potential failure point
Cons
- Single-stage compressor cannot modulate cooling capacity, leading to less precise temperature control and potential short-cycling in mild weather
- 73 dB noise level is relatively loud for outdoor condenser units, which may concern noise-sensitive neighbors
- Price listed as $0 suggests incomplete listing or promotional pricing that may not reflect actual installed cost
Who Should Buy
Best For
Homeowners in moderate climates upgrading 3,000 to 4,000 square foot homes who heat with natural gas or propane and prioritize operating cost savings over premium features. This system makes sense for those installing in attics or basements using upflow configuration with existing ductwork.
Consider Alternatives If
Anyone needing variable-capacity cooling in hot, humid climates should seek a two-stage or inverter-driven compressor system instead of this single-stage design.
Installation
Upflow configuration suits attic or basement furnace placement with supply ducts running upward. The 3/8 inch liquid line and 1 1/8 inch suction line with 1/2 inch insulation connect to the outdoor 5-ton condenser unit. Installation involves standard refrigerant charging, electrical termination at 115V single-phase 60Hz, and venting through plastic or PVC flue pipe located on the right side of the furnace cabinet.
Warranty & Reliability
Goodman provides lifetime coverage on the heat exchanger, protecting against rusted-through casings that typically cost $1,200 to $1,800 to replace. Ten-year parts warranty requires online registration and covers compressor, blower motor, and other components. This combination is competitive, though not exceptional compared to some competitors offering 10-year compressor coverage.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | Lifetime Heat Exchanger and 10 Years Parts with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| 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 |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Install 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 |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7368835 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Flue Location | Right |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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