Review
The Goodman 3.5 ton split system represents a solid middle-market choice for residential HVAC replacement. Manufactured by Online Supply under Goodman branding, this upflow configuration pairs an air-cooled condenser with an A-coil furnace setup. Energy Star certification signals compliance with baseline efficiency standards, appealing to homeowners who want certified performance without paying for premium-tier technology. At this price point, the system competes directly with other mainstream brands in the contractor-grade segment.
Cooling output reaches 42,000 BTU with a 16 SEER2 rating, translating to meaningful electricity savings versus older 10-12 SEER equipment. The furnace delivers 80,000 BTU heating through a two-stage gas burner operating at 80% AFUE efficiency. A scroll compressor handles the cooling cycle while the high-efficiency multi-speed blower motor adjusts CFM up to 2,000, optimizing airflow across varying demand. The 73 dB operating noise level keeps runtime reasonably quiet for a single-stage unit.
Pros & Cons
Pros
- 16 SEER2 efficiency rating qualifies for Energy Star certification and delivers measurable cooling cost reductions
- 80% AFUE furnace meets baseline efficiency standards with two-stage burner for better temperature control
- High-efficiency multi-speed blower motor adjusts to varying load conditions, improving comfort and reducing energy waste
- Scroll compressor design is proven, reliable, and widely supported by HVAC technicians nationwide
- 10-year warranty with online registration provides decent protection for homeowners investing in this system
- 42,000 BTU cooling capacity pairs well with 80,000 BTU heating for balanced seasonal performance
- Single-stage scroll compressor runs quieter than rotary designs at 73 dB
Cons
- 80% AFUE furnace lags behind high-efficiency units (90% AFUE) by $800-1200 over system lifetime
- Single-stage compressor cannot modulate cooling, creating minor temperature swings in mild weather
- Specification discrepancy lists both 3.5 ton and 5 ton tonnage, creating confusion for proper sizing
- No variable-speed compressor means less flexible part-load efficiency during shoulder seasons
Who Should Buy
Best For
Homeowners in moderate climates seeking dependable performance without premium costs qualify for this system. Contractors installing budget-tier equipment for rental properties or first-time buyers benefit from strong reliability and established parts availability.
Consider Alternatives If
Skip this unit if you need maximum efficiency (pay more for 18+ SEER2), live in extreme heat/cold zones requiring oversized capacity, or want modulating compressor technology for superior part-load comfort.
Installation
Upflow/horizontal configuration fits most standard attic or closet installations. Requires 120V single-phase 60 Hz power with breaker sizing between 23.5 and 40 amps, matching standard residential electrical service. Suction line insulation (1/2 inch thickness) and 50-foot maximum line length accommodate typical residential distances between outdoor and indoor units. Metal exhaust flue requirement means proper ductwork planning is essential.
Warranty & Reliability
Ten-year parts and labor warranty activates upon online registration, protecting against manufacturer defects during the critical first decade. Coverage includes compressor, heat exchanger, and functional components but excludes wear items and maintenance-related failures. This matches industry standard for equipment at this price tier, though premium brands sometimes offer 12-year protection.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 80,000 |
| 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 |
| 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 | 40 amps |
| Min. Breaker Size | 23.5 amps |
| Tonnage | 5 Ton |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Manual Goodman Specifications Goodman Parts Manual Goodman User Information Goodman Service Manual Goodman Technical 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 | 1 1/8" |
| Style | A-Coil |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | High Efficiency Multi-Speed |
| Maximum CFM | 2000 |
| Burner Stages | Two |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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