Review
Goodman's 3-ton gas furnace and air conditioner system represents a pragmatic middle ground in the residential HVAC market. Marketed through Online Supply and carrying SKU LS38783830, this downflow unit combines an 80,000 BTU furnace with a 36,000 BTU condenser, targeting contractors and homeowners who need dependable performance without cutting-edge efficiency ratings. The system replaces legacy models GSX130362, GSX130363, and GSX130365, signaling continuity in Goodman's lineup.
Performance specs confirm this as a conventional choice. The furnace delivers 80% AFUE efficiency across two burner stages, while the 13 SEER air conditioner operates at single-stage capacity using R410A or R22 refrigerant. A multi-speed blower reaches 1,600 CFM maximum airflow. The reciprocating compressor and sweat valve connections (3/8 inch liquid, 3/4 inch suction) represent field-proven technology. At 74 dB noise output, the unit operates within acceptable residential ranges but runs louder than variable-capacity competitors.
Pros & Cons
Pros
- 80,000 BTU two-stage gas furnace with 80% AFUE provides balanced heating output and efficiency
- 13 SEER air conditioner cools 36,000 BTU per hour, adequate for most 3-ton residential loads
- Multi-speed blower motor with 1,600 CFM maximum offers flexible airflow control
- Downflow A-coil configuration installs in tight attic spaces and crawlspaces
- 10-year warranty with online registration protects your investment against manufacturing defects
- Reciprocating compressor and sweat valve connections use proven, serviceable components
Cons
- 13 SEER rating is older standard, below current 14+ SEER minimums in many regions
- 80% AFUE furnace does not qualify for Energy Star certification or rebate programs
- Single-stage air conditioner compressor lacks variable capacity for part-load efficiency
- 74 dB noise level runs slightly louder than high-efficiency models
Who Should Buy
Best For
Contractors replacing failed systems on tight budgets and homeowners in moderate climates who prioritize affordability over premium efficiency. This unit suits rental properties, secondary residences, and replace-in-kind upgrades where downflow orientation fits existing ductwork.
Consider Alternatives If
Buyers in cold climates needing high-efficiency heating, Energy Star rebate seekers, or homeowners installing brand-new systems who can invest in 16+ SEER units for long-term energy savings.
Installation
Downflow configuration and A-coil design fit attic and crawlspace installations. The unit measures 34.5 inches tall by 17.5 inches wide by 28.75 inches deep, weighing 30 pounds when dry. Electrical requirements are straightforward: 120V single-phase 60 Hz service with 19.1 to 30-amp breaker sizing. Metal exhaust flue is mandatory. Installation demands standard refrigerant line insulation (3/8 inch thickness) and proper ductwork connection.
Warranty & Reliability
Online Supply backs this system with a 10-year parts warranty upon online registration, providing solid protection against compressor failure, valve defects, and component manufacturing errors. This coverage aligns with industry standards for mid-tier equipment. Registration is required to activate the full term, so document your purchase carefully. Labor costs fall to the installer or owner.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 36,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 120 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 | 34.5" |
| Width | 17.5" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Manual 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 | Downflow |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Multi-Speed |
| Maximum CFM | 1600 |
| Burner Stages | Two |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
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