Review
The Goodman 3.5-ton gas furnace and air conditioning system represents a pragmatic choice in the mid-market HVAC segment. This upflow unit combines a 100,000 BTU furnace with matching 42,000 BTU (3.5-ton) AC capacity, making it suitable for modest to medium-sized homes. Manufactured by a brand with decades of commercial and residential credibility, this system balances performance with affordability, appealing to contractors and homeowners who prioritize straightforward reliability over cutting-edge features.
The furnace delivers 96% AFUE efficiency, meaning 96 cents of every heating dollar converts to warmth. The air conditioner achieves 13 SEER cooling efficiency, a solid mid-tier rating that meets most regional codes without premium costs. The reciprocating compressor and single-stage burner provide straightforward operation, while the multi-speed blower motor adjusts to varying load demands. A maximum CFM of 2,000 ensures adequate air circulation through typical residential ductwork. Electrical requirements are modest: 115V single-phase at 60 Hz, with breaker sizing between 23.9 and 40 amps.
Pros & Cons
Pros
- 96% AFUE furnace efficiency significantly reduces heating costs and qualifies for some utility rebates
- 13 SEER cooling delivers solid AC performance, meeting mid-tier efficiency standards for most regions
- Multi-speed blower motor adapts to varying load conditions, improving comfort and efficiency
- 100,000 BTU heating capacity handles 3.5-ton cooling load with reliable single-stage reciprocating compressor
- 10-year warranty with online registration provides solid coverage for parts and peace of mind
- PVC/plastic flue compatibility allows easier installation in retrofit and new construction scenarios
Cons
- 13 SEER rating is respectable but not ENERGY STAR certified, missing potential utility incentives
- Single-stage compressor and burner limit part-load efficiency during mild weather conditions
- 75 dB noise level runs slightly higher than variable-speed competitors, noticeable during peak operation
Who Should Buy
Best For
Budget-conscious homeowners and HVAC contractors installing systems in mixed climates where 13 SEER efficiency meets local codes without premium pricing. This works well for properties needing reliable heating and cooling without investing in high-efficiency variable-stage equipment.
Consider Alternatives If
Buyers prioritizing maximum efficiency, ENERGY STAR certification, or ultra-quiet operation should look toward higher SEER and AFUE models with variable-speed technology.
Installation
Installation is relatively straightforward with standard sweat valve connections, 3/8-inch liquid and suction lines sized appropriately for 3.5 tons, and 3/8-inch suction line insulation. The 30-foot line set length accommodates typical residential splits. PVC/plastic flue requirement simplifies venting in most homes. A-coil configuration works with upflow or horizontal airflow, flexible for basement, attic, or utility closet placement. The 34.5-inch height, 21-inch width, and 28.75-inch depth fit standard equipment pads without unusual constraints.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty, activated through online registration. This extended coverage protects against compressor failure, heat exchanger cracks, and component defects without requiring service plan purchases. The warranty excludes labor, refrigerant, and damage from improper installation, so professional commissioning is essential. Registration takes minutes and provides documentation critical for future claims.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 75 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | No |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Liquid Valve Size | 3/8" |
| Max Breaker Size | 40 amps |
| Min. Breaker Size | 23.9 amps |
| Tonnage | 3.5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| 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 | Upflow/Horizontal |
| Style | A-Coil |
| Airflow Direction | Upflow/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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