Review
The Goodman 3-ton dual-stage system represents a practical middle ground in the combined furnace-condenser market. This upflow configuration combines an 80,000 BTU furnace with 35,000 BTU cooling capacity, positioned for residential applications where both heating and cooling require replacement. The two-stage design on both sides allows the system to ramp down during mild weather, avoiding the energy waste of constant full-capacity operation.
Performance numbers tell the story here. The furnace achieves 96% AFUE, meaning 96 cents of every heating dollar actually heats your home, while the condenser reaches 18 SEER2 with its scroll compressor and two-stage operation. The variable-speed ECM blower motor adjusts to exactly 1,600 CFM maximum when needed, but ramps down quietly during partial-load conditions. Energy Star certification confirms these specs meet federal efficiency thresholds. At 71 decibels, the condenser runs at moderate volume, acceptable for most residential locations.
Pros & Cons
Pros
- 96% AFUE furnace efficiency with two-stage burners reduces heating costs significantly compared to 80-90% units
- 18 SEER2 cooling rating with two-stage scroll compressor delivers strong efficiency during shoulder seasons
- Variable-speed ECM blower motor optimizes airflow and reduces energy waste across heating and cooling cycles
- Lifetime heat exchanger warranty provides long-term peace of mind on the furnace's most critical component
- Upflow A-coil configuration fits tight installation spaces common in attics and closets
- R410A refrigerant standard ensures compatibility with modern HVAC service practices
Cons
- The 5-ton cooling capacity exceeds stated 3-ton system size, creating potential oversizing issues for properly-sized homes
- 71 decibel noise level is moderate, not the quietest option available for sound-sensitive applications
- Two-stage operation means single-stage systems may offer simpler controls and lower upfront complexity
Who Should Buy
Best For
Contractors performing full system replacements in homes where both heating and cooling are outdated, and homeowners in cold climates prioritizing heating efficiency alongside cooling performance. The combination package approach reduces installation complexity compared to sourcing separate components.
Consider Alternatives If
Buyers seeking quiet operation should explore lower-decibel alternatives, and those needing exclusively cooling or heating should purchase components separately for better capacity matching.
Installation
This upflow A-coil design fits vertical installations in attics or closets with its 34.5-inch height and 21-inch width footprint. You'll need 115V single-phase power with a 21.3 to 35-amp breaker, standard for most homes. Liquid line uses 3/8-inch connections while suction line runs 7/8-inch with 3/4-inch insulation. PVC flue venting simplifies installation compared to metal alternatives. Sweat valve connections require basic soldering skills.
Warranty & Reliability
Goodman backs this unit with a lifetime heat exchanger warranty, covering the furnace's most expensive component. Parts carry 10-year coverage when you register online, typical industry standard protection. This combination of lifetime primary component coverage and decade-long parts support provides solid peace of mind, though labor costs fall on the homeowner.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | Lifetime Heat Exchanger and 10 Years Parts with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Product Features | Two Stage Condenser |
| 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 | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Install Instructions 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 | Upflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7368835 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Flue Location | Right |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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