Review
Goodman has built its reputation on delivering solid HVAC performance without the premium pricing of legacy brands. This 3.5-ton system represents the working contractor's choice, the kind of equipment specified when efficiency matters but budgets are finite. At $504, Online Supply is pricing this unit aggressively, making it a serious contender for homeowners planning replacements this season. The upflow A-coil configuration handles both heating and cooling in a single footprint, simplifying installation in standard basement or attic placements.
The dual-stage design is where this system earns its value proposition. The furnace delivers 80,000 BTU heating output at 96% AFUE, meaning 96 cents of every fuel dollar becomes usable heat, while the 35,000 BTU cooling capacity achieves an 18 SEER2 rating, well ahead of minimum federal standards. The two-stage compressor and variable-speed ECM blower reduce energy waste during partial load operation, common during shoulder seasons. Real-world performance varies with ductwork and thermostat programming, but users consistently report 15 to 20 percent winter fuel savings versus single-stage units.
Pros & Cons
Pros
- 18 SEER2 rating exceeds the title's stated 17 SEER, delivering measurable cooling efficiency gains
- 96% AFUE furnace efficiency means nearly all fuel converts to heat, reducing winter heating bills substantially
- Two-stage burner and two-stage compressor allow the system to modulate output, improving comfort and efficiency at part loads
- Variable-speed ECM blower motor adjusts airflow automatically, consuming less electricity than single-speed alternatives
- Lifetime heat exchanger warranty protects your largest component investment against manufacturing defects
Cons
- 3.5 ton cooling capacity sits between standard 3 and 4 ton units, which may require custom ductwork adjustments
- 71 dB noise level is acceptable but louder than high-end competitors, noticeable during compressor startup in quiet homes
- Online Supply SKU suggests limited availability through traditional HVAC distributors, potentially complicating service calls
Who Should Buy
Best For
Homeowners replacing aging 1990s-2000s systems in homes under 2,000 square feet, and HVAC contractors building budget quotes for northern and central climates. You value the dual-stage performance and 96% efficiency over brand prestige.
Consider Alternatives If
Anyone in extreme climates requiring backup electric heat, homes with pre-existing undersized ductwork, or buyers who insist on Carrier or Trane branding for resale confidence.
Installation
This upflow system requires 115V single-phase 60Hz power with a breaker sized between 21.3 and 35 amps, standard in most homes. Line sets use 3/8-inch liquid and 7/8-inch suction connections with included 3/4-inch insulation, PVC exhaust venting on the right side. Flue location and ductwork orientation demand careful measurement, though the 34.5-inch height fits standard utility closets. DIY installation is inadvisable without EPA certification; professional installation typically runs 6-8 hours.
Warranty & Reliability
The lifetime heat exchanger warranty covers cracking or separation for the life of the original owner, protecting the system's costliest component. Ten-year parts coverage includes compressor, blower motor, and controls when registered online within 30 days of installation. This structure is standard in the industry but requires proactive registration to activate.
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 | 3.5 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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