Review
Online Supply's Goodman gas furnace and air conditioner system targets budget-conscious homeowners and property managers seeking efficiency improvements. The 3 ton upflow configuration fits standard residential installations in typical attic or basement placements. At $89, this represents aggressive pricing for a dual-fuel system, though the quoted price appears to be for the condenser unit alone rather than the complete furnace bundle. Goodman's reputation for dependable mid-range equipment backs this offering, though Online Supply acts as the warranty holder.
The furnace delivers 100,000 BTU heating output at 97% AFUE efficiency, meaning 97 cents of every energy dollar converts to heat. The air conditioner section achieves 18 SEER efficiency with a two-stage scroll compressor and modulating burner that adjusts flame levels based on demand. Real-world performance shows this configuration reduces winter heating bills by 25-30% compared to 80% AFUE units and summer cooling costs by similar margins versus 13 SEER systems. The 2000 CFM maximum airflow and variable-speed ECM blower optimize dehumidification and comfort.
Pros & Cons
Pros
- 97% AFUE furnace efficiency reduces heating costs by up to 30% compared to older units
- 18 SEER rating qualifies for Energy Star certification and potential utility rebates
- Two-stage modulating burner adapts to heating demand, minimizing cycling losses
- Variable-speed ECM blower motor optimizes airflow and reduces electricity draw
- Scroll compressor technology provides quieter operation at 71 dBA
Cons
- Tonnage mismatch: listed as 5 ton condenser but 3 ton capacity creates confusion on actual system size
- 35,000 cooling BTU falls short of advertised 3 ton rating, which typically requires 36,000 BTU minimum
- Limited 10-year warranty requires online registration and covers Online Supply brand, not original Goodman manufacturer
Who Should Buy
Best For
Contractors and homeowners replacing 15-20 year old systems in homes under 1,500 square feet where budget matters. This unit delivers measurable efficiency gains without flagship-brand pricing, making it ideal for rental properties or primary residences in temperate zones.
Consider Alternatives If
Buyers needing true 3-ton capacity should look elsewhere, as the 35,000 BTU cooling output underperforms the nameplate rating.
Installation
Installation requires 115V single-phase 60Hz electrical service with 21.3 to 35 amp breaker capacity, standard in most homes. The unit requires PVC plastic flue venting and sweat-type refrigerant connections using 3/8 inch liquid and 7/8 inch suction lines. The A-coil configuration works with upflow or horizontal airflow in furnace cabinets. Professional installation is mandatory for proper refrigerant charging and ductwork sealing to achieve rated efficiency.
Warranty & Reliability
The 10-year warranty covers parts and components but requires online registration within 30 days of purchase. Coverage is provided by Online Supply, not Goodman directly, which may affect service availability in some regions. This differs from Goodman's standard 10-year parts/5-year labor coverage on direct purchases.
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 | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | RectorSeal SST2 Transition Installation Manual RectorSeal SST2 Transition Product Data Sheet 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 | 7424267 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Replaces | SST-CD-R6 |
| Equivalent | DF19837 |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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