Review
The Goodman 3.5 ton split system represents the practical middle ground in residential HVAC equipment. At $2,071, this upflow configuration targets contractors and budget-aware homeowners seeking reliable performance without premium financing. Manufactured by Online Supply under Goodman's established brand, this unit carries full AHRI certification (204633307) and maintains real-world credibility among technicians who prioritize straightforward installation and predictable operation over cutting-edge features.
Performance specs reveal an interesting efficiency profile. The 80% AFUE furnace burns 80,000 BTU of fuel with two-stage burner staging for load matching, while the air conditioning section delivers 42,000 BTU capacity with impressive 16 SEER2 cooling efficiency. Variable speed blower motor running up to 2,000 CFM ensures consistent airflow during both heating and cooling cycles. Operating on 208/230V single phase power with 23.5 to 40 amp breaker sizing, this system integrates into standard residential electrical service without panel upgrades.
Pros & Cons
Pros
- 16 SEER2 cooling efficiency significantly outperforms the 15 SEER rating, offering real energy savings on AC usage
- Variable speed blower motor optimizes airflow across heating and cooling cycles, reducing energy waste
- Two-stage burner provides modulating heat output for better comfort and lower fuel consumption
- 42,000 BTU cooling capacity handles 3.5 ton loads efficiently with R410A refrigerant
- 10-year warranty with online registration covers manufacturing defects and provides peace of mind
- ENERGY STAR certified system qualifies for utility rebates and tax incentives in many regions
- Dual fuel capability accepts natural gas or propane for installation flexibility
- $2,071 price point undercuts comparable mid-efficiency systems by 15-20 percent
Cons
- 80% AFUE heating is industry minimum for gas furnaces, meaning 20% fuel loss compared to 95%+ systems
- Single-stage compressor cannot modulate cooling capacity, cycling on and off rather than varying output
- 73 dB noise level approaches typical window units, potentially noticeable in quiet homes
- 5 ton tonnage mismatch with 3.5 ton cooling rating suggests specification inconsistency that needs clarification
Who Should Buy
Best For
Homeowners in moderate climates prioritizing upfront affordability over long-term fuel costs, and contractors serving rental properties or flip projects where cost containment matters most. This system works well for homes averaging 4-6 heating months annually where 80% efficiency remains acceptable.
Consider Alternatives If
Buyers in cold climates running furnaces 8+ months yearly should invest in 90%+ AFUE systems to recover equipment costs through gas savings. Energy-conscious homeowners planning 15+ year ownership should upgrade to high-efficiency models.
Installation
Upflow configuration suits basement or utility closet placement with compact 30 inch height and 21 inch depth. Metal exhaust flue requirement means proper venting installation is non-negotiable for safety and efficiency. Lineset connections use standard 3/8 inch liquid line and 1 1/8 inch suction line with 1/2 inch insulation thickness over 50 feet maximum length. Two-stage burner requires basic gas line connection, making installation straightforward for certified HVAC technicians.
Warranty & Reliability
Ten-year manufacturer warranty covers parts and compressor when registered online, providing solid protection against premature failure. This warranty matches mid-tier Goodman products but trails premium brands offering 12-15 year coverage. Registration requirement means tracking paperwork and maintaining proof of purchase. Evaporator coil receives separate warranty documentation through Goodman.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| AHRI Certificate Number | 204633307 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Variable Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 24.5" |
| 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. |
| 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 |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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