Review
The Goodman 3 Ton 15 SEER 80% AFUE system represents practical, no-frills heating and cooling for residential contractors and budget-conscious homeowners. As a matched pair, furnace and condenser ship from Online Supply at $2,705, significantly undercutting premium brands like Carrier or Lennox. The upflow configuration suits typical basement and attic installations across most residential builds. Its two-stage furnace and single-stage condenser prioritize straightforward operation over advanced comfort features, making it familiar territory for service technicians.
Cooling output reaches 34,800 BTU from the 3.5-ton condenser, which actually carries a 16 SEER2 rating rather than the headline 15 SEER figure, suggesting conservative marketing. The furnace delivers 80,000 BTU across two burner stages, paired with a variable-speed blower that adjusts airflow from under 500 CFM to a maximum of 2,000 CFM. Electrical demands are modest at 120 volts, 60 Hz, requiring a 30-amp breaker. The scroll compressor and R410A refrigerant are field-proven technologies, and 50-foot suction line insulation supports up to moderate-distance indoor unit placement.
Pros & Cons
Pros
- 16 SEER2 rated condenser unit exceeds the listed 15 SEER specification, offering stronger cooling efficiency than advertised
- 80,000 BTU furnace with two-stage burners and variable speed blower optimizes comfort and fuel consumption across heating seasons
- Scroll compressor design is proven reliable in thousands of Goodman installations across residential markets
- 3.5 ton actual capacity provides headroom for heat load calculations versus the labeled 3 ton rating
- 10-year parts warranty with online registration covers compressor and components without extended service costs
- $2,705 price point remains highly competitive for a complete matched furnace and AC system
Cons
- 80% AFUE puts this at baseline efficiency, missing high-efficiency standard of 95%+ that newer units offer
- Single-stage condenser lacks variable capacity, cycling on and off rather than modulating output for optimal dehumidification
- 73.5 dB noise level is noticeably louder than variable-capacity alternatives, which can reach 68-70 dB under part load
- Metal exhaust flue requirement adds installation cost and complexity compared to PVC-vented condensing furnaces
Who Should Buy
Best For
Contractors and homeowners in moderate climates seeking quick equipment replacement without budget strain fit this profile well. It's ideal for properties where upflow installation is feasible and furnace efficiency rebates don't apply, making the two-stage heating and proven compressor reliability attractive trade-offs.
Consider Alternatives If
Skip this system if you're in a cold climate requiring maximum heating efficiency, want minimal operating noise, or need variable-capacity cooling for humidity control in humid regions.
Installation
Upflow installation requires vertical ductwork in basements or utility closets, with 30 inches of height and 24.5 inches of width needed for clearance. The metal exhaust flue is mandatory, adding rigid ducting cost if the home lacks existing flue infrastructure. Suction and liquid lines come pre-sized at 7/8 inch and 3/8 inch respectively. Typical installation takes 4 to 6 hours for experienced crews, including electrical connections and refrigerant charge verification.
Warranty & Reliability
Coverage spans 10 years on parts and compressor when you register online, which is standard for Goodman but doesn't include labor. Registration is straightforward but required, making it owner responsibility to document purchase within the activation window. No extended warranties are offered through Online Supply, so budget for service calls beyond year one.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 120 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73.5 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 30 amps |
| Min. Breaker Size | 18.7 amps |
| Tonnage | 3.5 Ton |
| Height | 30" |
| Width | 24.5" |
| Depth | 21" |
| Resources | CAPT Installation Manual CAPT 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. |
| AHRI Certificate Number | 204633307 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Variable Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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