Review
The Goodman 3.5 Ton system represents the value tier of residential HVAC, targeting homeowners and small contractors who need functional equipment without premium pricing. Manufactured by Online Supply with SKU LS381183850, this combination furnace and AC condenser delivers 80,000 BTU heating and 42,000 BTU cooling. The upflow/downflow A-coil configuration accommodates typical residential installations, while Energy Star certification signals baseline efficiency compliance. This is honest, adequate equipment for straightforward replacement scenarios.
The furnace achieves 80% AFUE efficiency with a two-stage burner and multi-speed blower motor, producing up to 2000 CFM airflow. Cooling operates at 16 SEER through a single-stage scroll compressor using R410A refrigerant. The system requires 22.4 to 35 amp electrical service at 120V single-phase, fitting standard residential panels. While these specs meet minimum efficiency standards, the single-stage compressor cannot modulate output, meaning the unit cycles on-off rather than running continuously at reduced capacity during mild weather.
Pros & Cons
Pros
- 16 SEER cooling efficiency with Energy Star certification for lower summer electricity bills
- Dual-fuel capability with two-stage burner heating and 80,000 BTU output for consistent warmth
- Multi-speed blower motor reaches 2000 CFM maximum airflow for balanced comfort
- 50-foot suction line with half-inch insulation included for flexible installation layouts
- 10-year warranty with online registration provides reasonable protection against manufacturing defects
Cons
- 80% AFUE furnace efficiency lags modern 95%+ systems by 15 percentage points
- Single-stage cooling compressor cannot modulate capacity, wasting energy during partial-load operation
- 73 dB noise level registers noticeably louder than premium competitor equipment
- Spec sheet shows conflicting tonnage claims (3.5 ton vs 5 ton vs 42,000 BTU cooling)
Who Should Buy
Best For
Budget-focused homeowners replacing failed systems who prioritize upfront cost savings over long-term efficiency gains. This unit suits temperate regions where furnaces run fewer annual hours, minimizing the financial impact of 80% versus 95% efficiency.
Consider Alternatives If
Cold-climate residents, efficiency-conscious buyers planning 15-year ownership, or anyone willing to invest modestly more for two-stage cooling and higher AFUE ratings.
Installation
Installation demands standard furnace and condenser placement with proper clearances. The included 50-foot suction line with half-inch insulation simplifies outdoor condenser connection. Valve connections use 3/8-inch and 7/8-inch sweat fittings requiring soldering skills. Metal exhaust flue venting must be installed to code. Most licensed HVAC contractors complete installations in one working day without complications.
Warranty & Reliability
Goodman provides a 10-year parts warranty upon online registration, covering manufacturing defects in compressor, coil, and heat exchanger. This is standard coverage for mid-tier equipment, though some competitors offer 12-year terms. Registration is mandatory, so documentation and proof of purchase should be retained. Labor and refrigerant are not covered.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| 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 | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF 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. |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Metal |
| Furnace Efficiency / AFUE | 80% |
| Blower Motor | Multi-Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Gas |
| 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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