Review
The Goodman 3.5 Ton Gas Furnace and Air Conditioner System represents solid mid-market equipment for homeowners balancing heating and cooling needs. This horizontal configuration unit combines a 120,000 BTU furnace with a matching outdoor condenser, designed for homes with limited attic space or utility closet installations. Goodman has carved out reliable market share by offering proven components without cutting corners on durability.
The heating side delivers 96% AFUE efficiency, meaning only 4% of fuel energy is wasted, a meaningful jump from standard 80-85% units. On cooling, the 14 SEER rating and 42,000 BTU capacity provide legitimate energy savings compared to decade-old air conditioners. The scroll compressor operates at 73 dB, keeping noise reasonable during compressor cycles. Multi-speed blower motor and 2000 maximum CFM airflow allow proper staging for comfort without excessive runtime.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating costs significantly compared to 80-85% units
- 14 SEER cooling efficiency qualifies for rebates in many utility territories
- Scroll compressor is proven reliable with lower noise at 73 dB compared to rotary designs
- Multi-speed blower motor optimizes airflow for better comfort and humidity control
- PVC exhaust compatibility simplifies installation in modern homes with plastic venting
- 10-year warranty with online registration provides solid coverage peace of mind
Cons
- Single-stage compressor and burner mean no variable capacity for mild weather efficiency gains
- 42,000 cooling BTU spec conflicts with advertised 3.5-ton rating, creating confusion on actual capacity
- Not Energy Star certified, missing out on premium efficiency tier recognition
- 73 dB noise level runs slightly louder than premium units during peak operation
Who Should Buy
Best For
Homeowners in moderate climates who heat significantly but don't experience extreme summer peaks should consider this system. Contractors replacing 15-plus-year-old equipment for price-conscious clients will appreciate the balance of efficiency gains and manageable installation costs.
Consider Alternatives If
Buyers in hot climates needing maximum cooling capacity or those prioritizing ultra-quiet operation should explore variable-capacity alternatives or higher SEER options.
Installation
This horizontal A-coil configuration suits homes where the furnace sits in a basement or utility room with downflow airflow. Technicians appreciate the 3/8-inch liquid line and 7/8-inch suction line connections, standard in the industry. PVC flue compatibility eliminates costly metal venting upgrades. Electrical requirements are straightforward at 115V single-phase 60 Hz, with breaker sizing between 22 and 35 amps. Most installations complete in 4 to 6 hours for experienced contractors.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty when you register online after installation. This coverage applies to compressor, coil, and blower motor failures under normal operation. The warranty does not cover labor, refrigerant, or damage from improper installation. Registration is mandatory to activate coverage, so save your paperwork and complete the process within 30 days.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 120,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | No |
| SEER1 (Efficiency) | 14 |
| 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 amps |
| Tonnage | 5 Ton |
| Height | 34.5" |
| Width | 24.5" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User 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 | Downflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi Speed |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
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