Review
This 3-ton Goodman gas furnace and air conditioner system sits squarely in the middle of the residential HVAC market, offering solid efficiency without flagship pricing. The combination of a modulating furnace rated at 100,000 BTU and a 3.5-ton condenser coil provides reasonable capacity for homes between 1,400 and 2,000 square feet. Goodman maintains strong market presence among contractors for reliable mid-tier equipment, and this horizontal downflow configuration works well for basements or attics where space is tight.
Performance specs reveal thoughtful engineering across both sides of the system. The furnace achieves 97% AFUE, meaning nearly all fuel converts to usable heat, while the condenser pulls 34,800 cooling BTU with 16 SEER2 efficiency. The modulating burner means heating output adjusts in steps rather than cycling on and off at full capacity, reducing temperature swings. The variable-speed ECM blower manages 2,000 CFM maximum, supporting both efficient part-load operation and strong delivery on demand days.
Pros & Cons
Pros
- 97% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% models
- 16 SEER2 cooling efficiency qualifies for Energy Star certification and rebates
- Modulating burner stages adjust automatically to match heating demand, preventing short cycling
- Variable-speed ECM blower motor fine-tunes airflow for comfort and efficiency
- 10-year warranty with online registration covers parts across both heating and cooling components
Cons
- 73.5 dB noise level runs slightly louder than high-end variable-stage compressors during cooling
- Single-stage compressor in outdoor unit cannot reduce cooling capacity on milder days
- Plastic PVC exhaust flue requirement limits venting options compared to metal ductwork compatibility
Who Should Buy
Best For
Homeowners in zones 4-6 experiencing mixed heating and cooling seasons will see the strongest ROI from this system. Contractors looking to balance efficiency improvements with reasonable equipment costs for mid-range residential retrofits should consider this unit seriously.
Consider Alternatives If
Buyers in consistently hot climates who need aggressive cooling staging should evaluate variable-capacity compressors, and those prioritizing absolute silence should audition quieter models before purchasing.
Installation
Installation complexity sits at moderate difficulty. The unit requires standard 115V single-phase power with a 30-amp breaker maximum, manageable for most residential panels. Suction lines need 3/4 inch insulation up to 50 feet, while liquid and suction connections use standard 3/8 inch and 7/8 inch ports respectively. Plastic PVC exhaust venting simplifies flue routing compared to metal ductwork. Professional installation remains strongly recommended for proper refrigerant charging and airflow balancing.
Warranty & Reliability
Goodman backs this system with a solid 10-year warranty on parts when you register online after purchase. This covers compressor failure, heat exchanger cracks, and component defects equally across heating and cooling. Real-world claims experience suggests Goodman honors these warranties fairly, though homeowners should keep receipts and registration documentation accessible. This protection level matches industry midpoint expectations and adds meaningful risk reduction.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 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 | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation 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 | Downflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7424272 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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