Review
The Goodman 3-ton dual-fuel system positions itself as a practical mid-tier choice for contractors and homeowners balancing performance against budget. With a 96% AFUE furnace and 16 SEER air conditioning unit, this configuration handles both heating and cooling effectively. The A-coil horizontal mount accommodates upflow or horizontal airflow directions, and the AHRI certification number 7368842 confirms factory-matched components. Online Supply stocks this SKU LS38783850, positioning it as an accessible option for routine replacements or new installations.
Performance data shows the furnace delivers 120,000 BTU heating output while the air conditioning side produces 34,800 cooling BTU, appropriate for a 3-ton system. The variable-speed ECM blower motor scales between 0 and 2000 CFM, allowing gradual ramp-up rather than aggressive on-off cycling. The two-stage burner adds efficiency by running at partial load during mild heating days. Electrical requirements are modest at 115V single phase 60 Hz with a 30-amp maximum breaker, simplifying installation in most homes.
Pros & Cons
Pros
- 96% AFUE furnace efficiency qualifies for utility rebates and keeps heating costs down across cold months
- 16 SEER rating meets Energy Star requirements with 34,800 cooling BTU capacity for proper 3-ton cooling
- Variable-speed ECM blower motor optimizes airflow from 0 to 2000 CFM based on demand, improving comfort and efficiency
- Two-stage burner allows the system to modulate heating output rather than cycling on and off constantly
- Dual-fuel capability handles both natural gas and propane, providing flexibility for different properties or fuel availability
Cons
- 73.5 dB noise level is moderate to loud for an outdoor condenser, noticeable during operation near windows or patios
- Single-stage compressor lacks variable capacity, so cooling operates at full capacity until it cycles off
- Spec confusion exists: listed as both 3-ton and 5-ton tonnage, which creates uncertainty about actual capacity and matching
Who Should Buy
Best For
Homeowners in transitional climates who need balanced heating and cooling without paying for high-end variable-capacity equipment. Contractors installing complete systems where dual-fuel capability matters and utility rebates offset the upfront cost.
Consider Alternatives If
Anyone seeking ultra-quiet operation or those in extreme cooling climates where single-stage compressor cycling will feel less efficient than two-stage alternatives.
Installation
Installation requires 115V single-phase power with 18.7 to 30-amp breaker capacity, within standard residential electrical service. The system uses R410A refrigerant with 3/8 inch liquid and 7/8 inch suction lines, plus 3/4 inch suction line insulation up to 50 feet. PVC plastic exhaust flue is mandatory for the furnace. Dimensions are 34.5 inches high, 24.5 inches wide, and 28.75 inches deep, fitting most attic or basement horizontal installations.
Warranty & Reliability
Goodman backs this system with a lifetime heat exchanger warranty and 10 years parts coverage when registered online. The heat exchanger lifetime coverage protects against major furnace failure, the costliest component. However, 10 years parts coverage is standard for mid-tier equipment, not premium. Registration is required to activate full benefits, so documentation matters at purchase.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 120,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | Lifetime Heat Exchanger and 10 Years Parts 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 | 5 Ton |
| Height | 34.5" |
| Width | 24.5" |
| 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 | 7368842 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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