Review
Goodman's 4-ton horizontal furnace-condenser pairing occupies a practical middle ground in the HVAC market. Rated at 96% AFUE and 15 SEER (SEER1 16), it targets budget-conscious contractors and homeowners seeking solid efficiency without premium pricing. The horizontal configuration addresses real installation challenges in attics and crawlspaces where traditional upflow units create space conflicts. Energy Star certification confirms compliance with federal standards.
The furnace delivers 120,000 BTU heating output via a two-stage burner burning natural gas or propane efficiently. Cooling capacity reaches 45,500 BTU through a scroll compressor and single-stage condenser. The variable-speed ECM blower modulates between zero and 2000 CFM, reducing standby energy draw during mild weather. Electrical requirements of 208/230V single-phase at 40 amps maximum are standard for residential installations. The R410A refrigerant standard (R22 compatible) simplifies retrofit applications.
Pros & Cons
Pros
- 96% AFUE efficiency reduces heating fuel consumption significantly compared to standard 80% furnaces
- Variable-speed ECM blower motor adapts airflow from 0 to 2000 CFM for comfort and efficiency
- Two-stage burner allows low-fire operation during mild weather, minimizing short cycling and wear
- Horizontal configuration fits tight attic and crawlspace installations where vertical units won't work
- PVC exhaust flue eliminates expensive masonry chimney requirements, reducing installation costs
Cons
- Cooling efficiency rated at SEER 15 (or SEER1 16 per specs) lags premium 18+ SEER systems in hot climates
- Single-stage condenser means no capacity modulation during part-load cooling conditions
- 73 dB noise level approaches upper acceptable range for some residential installations
Who Should Buy
Best For
Contractors specifying equipment for northern and central U.S. climates where heating costs exceed cooling expenses. Homeowners upgrading from 80% furnaces in homes with adequate electrical service (208/230V single-phase) and existing ductwork compatible with horizontal A-coil configuration.
Consider Alternatives If
Anyone in cooling-dominant climates without prioritizing heating efficiency should explore higher SEER systems. Buyers with 120V single-phase power only or restrictive attic dimensions under 21.125 inches deep.
Installation
This unit fits horizontal installations requiring 24.5-inch height and 26-inch width clearance. PVC exhaust flue eliminates costly chimney modifications, a major cost advantage over 80% furnaces. Refrigerant lines arrive pre-charged with standard 3/8-inch liquid and 1 1/8-inch suction connections. Professional installation ensures proper gas line sizing, electrical connections, and ductwork sealing. A-coil configuration requires proper condensate drainage.
Warranty & Reliability
Goodman provides 10-year parts coverage upon online registration, protecting against compressor and heat exchanger failures during this period. This warranty ranks mid-tier compared to 15-year coverage from some competitors. Registration is essential to activate coverage and should be completed immediately after installation. Evaporator coil carries separate extended protection per warranty documentation.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 45,500 |
| Heating BTU | 120,000 |
| 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 | 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 | Horizontal |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 24.5" |
| Width | 26" |
| Depth | 21.125" |
| Resources | CHPF Installation Manual CHPF 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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