Review
The Goodman 3.5-ton furnace and AC system is a straightforward, no-frills combination unit designed for contractors and homeowners prioritizing value and reliable performance. Manufactured by Online Supply under the trusted Goodman brand, this upflow unit delivers solid specifications at competitive pricing. The system addresses the core need of efficient heating and cooling without unnecessary smart features or premium components, making it a practical choice for residential applications in moderate climates.
Performance metrics are respectable across both heating and cooling. The furnace produces 100,000 BTU at 80% AFUE efficiency, delivering strong heating output without the cost of condensing technology. The AC side rates at 16 SEER1, exceeding the advertised 14 SEER specification, with 42,000 BTU cooling capacity suitable for three to four-bedroom homes. A scroll compressor with single-stage operation runs continuously at full capacity, which is less efficient than variable-stage units but more reliable mechanically over time.
Pros & Cons
Pros
- 16 SEER1 rating exceeds the listed 14 SEER, delivering above-spec cooling efficiency
- 100,000 BTU heating capacity handles cold climates while 42,000 BTU cooling manages summer loads effectively
- 80% AFUE furnace efficiency is competitive for non-condensing models, reducing heating costs
- Energy Star certified, qualifying for potential rebates through local utilities and manufacturers
- Multi-speed PSC blower motor with 2,000 CFM maximum provides good temperature control
- 10-year warranty with online registration covers parts and manufacturing defects comprehensively
Cons
- Single-stage compressor cannot modulate cooling capacity, running full power or off with no mid-range operation
- 80% AFUE is non-condensing, meaning higher exhaust temperatures and less heat recovery than 90%+ models
- 73 dB noise level at peak operation is louder than variable-speed competitors, noticeable during warm days
Who Should Buy
Best For
Homeowners in mild-to-moderate climates seeking an affordable, reliable furnace and AC combo with solid efficiency ratings. Contractors building spec homes where upfront cost matters more than premium features are ideal candidates.
Consider Alternatives If
Buyers in very cold climates needing maximum heating efficiency should consider condensing furnaces, and those sensitive to noise should audition quieter variable-speed units before committing.
Installation
Installation is straightforward for experienced HVAC technicians. The upflow configuration with A-coil design fits standard attic or closet installations in most homes. Refrigerant lines require 3/8-inch liquid and 7/8-inch suction connections, with 50 feet of pre-insulated suction line included. Electrical demand ranges from 22.4 to 35 amps at 120V single-phase 60 Hz, compatible with standard residential breaker panels. The metal flue exhaust requirement mandates proper venting to code specifications.
Warranty & Reliability
Goodman backs this system with a 10-year parts and manufacturing warranty upon online registration. This is standard coverage for the brand and provides solid protection against compressor failure and component defects. Registration is straightforward and essential, as unregistered units receive shorter limited warranties. Coverage begins at installation and requires proper maintenance to remain valid.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A |
| Electrical | 120 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| Product Features | Rebate Available |
| 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 | 35 amps |
| Min. Breaker Size | 22.4 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Manual Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information 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 | 1 1/8" |
| Style | A-Coil |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Multi Speed - PSC |
| Maximum CFM | 2000 |
| Flue Location | Top |
| Burner Stages | Single |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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