Review
Goodman's 3.5-ton split system targets the mainstream replacement market where homeowners replace aging 10-15 SEER single-stage units. This SKU LS38783850 combines a 3-ton 96% AFUE furnace with a modestly oversized air conditioner, creating a setup that emphasizes heating efficiency and steady-state comfort. The two-stage burner and variable-speed blower represent meaningful upgrades over contractor-grade baseline equipment commonly installed today.
Performance metrics tell a clear story. The furnace delivers 80,000 BTU on a 96% AFUE rating, losing only 3,200 BTU to flue exhaust compared to 85% AFUE equipment that wastes 12,000 BTU annually. The variable-speed ECM motor adjusts airflow from 400-1,600 CFM based on demand, operating quietly at partial load. Cooling capacity of 34,800 BTU at 16 SEER (the actual spec, despite the title) provides solid performance for 3-ton applications. The scroll compressor using R410A refrigerant is proven and widely serviceable.
Pros & Cons
Pros
- 96% AFUE furnace efficiency captures nearly all fuel energy, translating to measurable savings on gas bills versus 80-85% baseline units
- Variable-speed ECM blower motor operates at lower speeds during partial-load conditions, reducing electricity consumption and noise below 74 dBA
- Two-stage burner allows the furnace to run at 60-70% capacity on mild winter days, improving comfort and efficiency
- SEER 16 cooling rating on the 3.5-ton condenser delivers above-standard air conditioning performance for 3-ton applications
- Energy Star certified and includes 10-year parts warranty with online registration, providing solid long-term protection
Cons
- Specs list SEER1 as 16 but title claims 15 SEER, creating labeling confusion about actual cooling efficiency rating
- 3.5-ton condenser paired with 3-ton furnace is slightly oversized for heating, requiring careful load calculation during installation
- Single-stage condenser limits efficiency optimization compared to two-stage cooling systems in variable-load scenarios
- 73.5 dBA noise level is moderate and acceptable but not quiet for bedrooms or noise-sensitive applications
Who Should Buy
Best For
Homeowners in moderate climates who need balanced heating and cooling and value operational cost savings over initial purchase price. This system suits those replacing 15-year-old equipment and willing to invest in variable-speed technology for quieter, more efficient operation.
Consider Alternatives If
Anyone in high-cooling climates needing true 3-ton matching capacity should look for a properly sized 3-ton condenser, and buyers seeking the lowest upfront cost should consider single-stage alternatives.
Installation
Installation requires 208/230V single-phase power with a minimum 18.7-amp breaker and maximum 30-amp protection, straightforward for most homes. The upflow configuration with right-side plastic PVC flue works in standard basements and utility closets. Refrigerant lines run up to 50 feet with 3/4-inch suction insulation, and valve sizes (3/8-inch liquid, 7/8-inch suction) are standard. A-coil evaporator requires compatible ductwork and condensate drainage.
Warranty & Reliability
Goodman backs this unit with a 10-year parts warranty following online registration, a competitive offering that protects against compressor and heat exchanger failures common in years 5-10. Labor warranty terms vary by installer. This coverage moderates the risk of component failure and reflects Goodman's confidence in manufacturing quality, though it does not cover wear items or service calls.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73.5 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| 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 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil 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. |
| 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 |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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