Review
The Goodman 3-ton two-stage system represents a solid midrange option in the residential HVAC market. Combining a 100,000 BTU furnace with 35,000 BTU cooling capacity, this upflow configuration fits most standard residential installations. The unit qualifies as ENERGY STAR certified, signaling manufacturers' confidence in its efficiency credentials. Online Supply's rebate availability further improves its competitive positioning, particularly for cost-conscious homeowners upgrading from 15-year-old equipment.
Efficiency numbers tell the real story. The furnace delivers 96% AFUE, meaning only 4% of fuel energy escapes as waste, a substantial improvement over the 80 to 88% typical of equipment from the early 2010s. The outdoor unit achieves 18 SEER2 cooling efficiency, positioning it above standard 14 SEER equipment. Two-stage operation on both heating and cooling sides allows the system to run at partial capacity during mild weather, cutting runtime noise to a whisper and reducing cycling losses that plague single-stage units.
Pros & Cons
Pros
- 96% AFUE furnace converts nearly all fuel to usable heat, reducing winter energy bills significantly
- 18 SEER2 rating exceeds ENERGY STAR requirements, delivering superior summer cooling efficiency
- Two-stage burner and two-stage compressor allow modulating operation for quieter, more precise comfort
- Variable-speed ECM blower motor automatically adjusts to 2,000 CFM maximum, improving dehumidification and reducing runtime
- 10-year warranty with online registration provides solid coverage against manufacturing defects
Cons
- 5-ton outdoor unit oversized for advertised 3-ton capacity creates potential mismatch and reduced efficiency in mild conditions
- 71 dB noise level at full capacity may be noticeable to homeowners in quiet suburban settings
- Requires PVC/plastic exhaust flue, limiting installation flexibility in some retrofit situations
Who Should Buy
Best For
Homeowners in moderate to cold climates seeking a balanced heating and cooling upgrade with strong efficiency credentials and future-proof technology. This system rewards those who qualify for manufacturer rebates and plan to stay in their homes for at least 8 to 10 years.
Consider Alternatives If
Budget-conscious buyers in mild climates should look at single-stage alternatives, and those with existing metal ductwork issues may face higher installation costs with the PVC flue requirement.
Installation
Installation demands standard HVAC practices with some specific considerations. The system requires 115V single-phase 60 Hz power with 21.3 to 35 amp breaker capacity, typical for most homes. Refrigerant line sizing calls for 3/8 inch liquid and 7/8 inch suction lines with 3/4 inch insulation thickness. PVC plastic exhaust flue requirement means old metal chimneys need replacement. Upflow/horizontal airflow orientation suits basement or utility closet placement effectively.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty when owners register online within 30 days of purchase. This covers compressor, heat exchanger, and component failures, providing meaningful protection against expensive replacements. Labor and refrigerant refills fall outside coverage. Registration is straightforward and strongly recommended, as it doubles protection compared to the base 5-year non-registered warranty.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Product Features | Rebate Available |
| Energy Star | Yes |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 21.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| 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 | 7368836 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| 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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