Review
The Goodman 3.5 ton gas furnace and air conditioner system is a straightforward workhorse designed for contractors and homeowners seeking functional equipment without cutting-edge efficiency. This upflow configuration suits basements and utility closets in single-family homes across moderate climates. Online Supply positions this SKU LS38783830 as a cost-effective replacement option, emphasizing reliability over performance metrics. The system pairs an 80,000 BTU furnace with a 42,000 BTU air conditioner rated at 14 SEER cooling efficiency.
Performance specs reveal a deliberately basic approach to climate control. The 80% AFUE gas furnace sits at entry-level efficiency, meaning roughly one dollar in five spent on heating energy becomes waste heat up the flue. The single-stage scroll compressor handles cooling without variable capacity, running at full capacity whenever demand exists. Two-stage burner design does provide better heating modulation than single-stage competitors. The high-efficiency multi-speed blower motor, rated to 2000 CFM maximum, adapts more intelligently to actual heating and cooling loads than fixed-speed alternatives.
Pros & Cons
Pros
- Two-stage gas burner provides better modulation and comfort than single-stage alternatives
- 14 SEER rating meets baseline modern efficiency standards for cooling performance
- High-efficiency multi-speed blower motor adapts to heating and cooling demands
- 80,000 BTU heating capacity covers most residential applications with single unit
- 3.5 ton / 5 ton capacity mismatch allows flexibility for different install scenarios
- 10-year warranty with online registration offers reasonable long-term protection
Cons
- 80% AFUE is entry-level for furnaces, missing 90%+ AFUE models that cut gas bills significantly
- 14 SEER is standard, not exceptional, compared to 16+ SEER alternatives available today
- 73 dB operating noise is moderately loud, noticeable in quiet living spaces
- Single-stage air conditioner compressor lacks variable output found in higher efficiency units
- No ENERGY STAR certification signals this isn't optimized for energy savings
Who Should Buy
Best For
Contractors installing replacement systems in budget-constrained residential projects will appreciate the straightforward two-stage design and proven Goodman reliability. Homeowners in moderate climates who prioritize upfront cost over energy bills and want a functional system that lasts 15+ years are ideal candidates.
Consider Alternatives If
Skip this unit if you're in a hot climate where AC runs constantly, live in a cold region with extended heating seasons, or have budget for higher efficiency models like 16+ SEER air conditioners and 90%+ AFUE furnaces.
Installation
Installation requires standard HVAC connections, 120V single-phase 60Hz power with 22 to 35 amp breaker sizing, and metal exhaust flue for furnace venting. The A-coil design demands upflow or downflow configuration matching your existing ductwork layout. Suction line insulation thickness of 3/8 inch and line sizes of 3/8 inch liquid and 7/8 inch suction are standard connections. Most contractors complete installation within one day for straightforward replacement work.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty contingent on online registration, a reasonable protection window for equipment with this price point and reliability profile. The coverage defends against manufacturing defects but excludes normal wear, improper installation, or refrigerant loss. Registration takes five minutes online and significantly impacts your ability to claim warranty service, making it critical to complete before operation.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 120 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | No |
| SEER1 (Efficiency) | 14 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 22 amps |
| Tonnage | 5 Ton |
| Height | 30" |
| 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 | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | High Efficiency Multi-Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| 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
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