Review
This 4-ton Goodman gas furnace and air conditioner system balances solid efficiency with reasonable pricing in a horizontal A-coil configuration. Manufactured by Online Supply, the unit arrives SKU LS38783850 and targets homeowners and contractors who need reliable heating and cooling without stepping into premium-tier territory. The 96% AFUE furnace and 16 SEER condenser both exceed base efficiency standards, making it a credible choice for those serious about utility costs.
Heating performance comes from a 120,000 BTU, two-stage burner with 96% AFUE efficiency, meaning only 4% of your gas dollars escape unburned. Cooling delivers 45,500 BTU at 16 SEER using R410A refrigerant and a scroll compressor. The multi-speed ECM blower motor reaches 2,000 CFM maximum and automatically adjusts speed, improving temperature distribution and reducing standalone blower noise to 73 dB. Electrical demand is modest at 208/230V single phase, with breaker sizing between 23.9 and 40 amps.
Pros & Cons
Pros
- 96% AFUE furnace efficiency is excellent for gas heat, translating to real savings on heating bills in northern climates
- 16 SEER air conditioner meets Energy Star standards and surpasses baseline SEER 13 requirements by a meaningful margin
- Two-stage burner modulates heating output for better comfort and lower runtime costs compared to single-stage units
- Multi-speed ECM blower motor adapts to demand, reducing electricity use and improving humidity control
- Scroll compressor is known for reliability and quiet operation at 73 dB, typical for residential units
Cons
- A-coil horizontal configuration limits placement flexibility compared to traditional vertical setups in some homes
- Single-stage cooling is less efficient than two-stage compressors for moderate load conditions
- Requires PVC/plastic exhaust flue, which adds installation costs and limits some retrofit applications
Who Should Buy
Best For
Homeowners in northern and moderate climates who heat with gas and want to reduce heating costs without overspending on premium efficiency tiers. Contractors building new homes or replacing complete systems who need a dependable unit that performs well and installs straightforwardly.
Consider Alternatives If
If you live in a warm climate where cooling is your primary load, or if you need a two-stage compressor for superior part-load efficiency, consider higher SEER units instead.
Installation
The horizontal A-coil design suits basements, crawlspaces, or attics where vertical clearance is limited. Liquid and suction lines are sized at 3/8 inch and 7/8 inch respectively, with 50 feet of insulation supplied at 3/4 inch thickness. PVC exhaust flue requirement simplifies venting but may require additional ductwork planning. Standard tools and refrigeration certification are necessary; expect 6 to 10 hours for experienced crews.
Warranty & Reliability
Goodman provides a 10-year warranty on parts and labor when you register the unit online. This is solid baseline coverage that protects compressor and heat exchanger failures, though it excludes labor after year one in some programs. Registration is straightforward and essential to activate full coverage. Check local dealer terms, as labor coverage varies by region.
Specifications
| SKU | LS38783850 |
| 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) | 30.000000 |
| Feature | Spec |
| Configuration | Upflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Tonnage | 4 Ton |
| Style | A-Coil |
| Height | 36.25" |
| Width | 35.5" |
| Depth | 35.5" |
| Resources | Goodman Brochure Goodman Specifications Goodman Installation Manual Goodman Warranty Information Goodman Service Instructions Goodman Kit Instructions Goodman Parts Manual 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. |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi-Speed - ECM |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Gas |
| 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 |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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