Review
The 3-ton Goodman gas furnace and air conditioner system positions itself as a practical choice in the mid-market HVAC segment. Sold through Online Supply with SKU LS38783830, this downflow-configured combo replaces older GSX series models and targets homeowners and contractors seeking straightforward equipment without premium pricing. The system handles 36,000 BTU cooling and 80,000 BTU heating across a compact 21-by-21-by-22-inch footprint, fitting existing spaces where dimension constraints matter.
Performance metrics tell a heating-focused story. The 96% AFUE rating places this furnace among the most efficient gas units available, translating directly to lower winter fuel consumption for homeowners in cold climates. Cooling efficiency rates at 13 SEER, which meets minimum standards but trails contemporary 15-18 SEER systems. The multi-speed blower motor with 1,600 CFM maximum capacity manages airflow responsively, while single-stage compression at 74 dBA operates acceptably though noticeably in quiet rooms. Electrical requirements run straightforward at 115V single-phase 60Hz with 19.1 to 30-amp breaker sizing.
Pros & Cons
Pros
- 96% AFUE furnace efficiency tops most residential gas units, reducing winter heating costs measurably
- Flexible refrigerant compatibility accepts R410A or R22, easing retrofit decisions for existing systems
- Multi-speed blower motor with 1,600 CFM maximum allows better temperature distribution and comfort control
- PVC plastic flue venting simplifies installation in tight spaces compared to metal ductwork
- 10-year warranty with online registration provides solid baseline coverage for parts and labor
Cons
- 13 SEER rating is entry-level for air conditioning, performing below 15+ SEER systems in cooling efficiency
- Single-stage compressor cycles on-and-off rather than modulating, using more energy during partial-load operation
- 74 dBA noise level ranks on the louder side for residential units, potentially noticeable in bedrooms
- Not Energy Star certified, limiting eligibility for utility rebate programs available in many markets
Who Should Buy
Best For
Homeowners in heating-dominant climates who spend most utility dollars on winter comfort appreciate the 96% AFUE rating. Budget-conscious contractors installing downflow systems in attics or crawlspaces benefit from the straightforward configuration and PVC flue compatibility.
Consider Alternatives If
Buyers in hot climates prioritizing air conditioning efficiency or those seeking Energy Star rebates should explore higher-SEER alternatives, as this system's cooling performance lags current standards.
Installation
Installation favors downflow and horizontal configurations, with right-side flue positioning for PVC plastic venting. The A-coil style evaporator matches standard horizontal plenums. Refrigerant lines size at 3/8-inch liquid and 7/8-inch suction, with 3/8-inch insulation thickness provided for 30-foot line sets. Sweat-type valve connections require soldering skills, though experienced HVAC technicians accomplish this routinely. PVC flue venting eliminates metal ductwork complexity.
Warranty & Reliability
Goodman covers this system for 10 years on parts and labor when registered online within 30 days of installation. Coverage includes the furnace, air conditioner, and evaporator coil against manufacturing defects. Registration remains straightforward through Online Supply's website. This baseline coverage proves adequate for most installations but lacks extended options offered by premium manufacturers.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 36,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 74 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Replaces | GSX130362, GSX130363, GSX130365 |
| Energy Star | No |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 30 amps |
| Min. Breaker Size | 19.1 amps |
| Tonnage | 3 Ton |
| Valve Type | Sweat |
| Height | 22" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF 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. |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi Speed |
| Maximum CFM | 1600 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.