Review
The Goodman 3-ton gas furnace and air conditioner system is a practical mid-market choice for homeowners balancing upfront cost with operational efficiency. This upflow configuration fits standard basement installations, and the A-coil design works seamlessly with most ductwork layouts. Goodman's reputation for straightforward engineering translates here, offering a system that installers understand and parts suppliers stock readily across North America.
The cooling side delivers 36,000 BTU capacity at 14 SEER, which exceeds minimum efficiency standards and qualifies for utility incentives in many regions. On heating, the 80,000 BTU furnace runs at 92% AFUE, converting nearly all gas burned into conditioned air. The multi-speed blower motor adjusts CFM output up to 1600, allowing the system to modulate comfort without constant on-off cycling. Combined, these specs suggest annual energy costs roughly 15 to 20 percent lower than baseline 10 SEER and 80% AFUE equipment.
Pros & Cons
Pros
- 14 SEER cooling efficiency qualifies for many utility rebates and ENERGY STAR recognition programs
- 92% AFUE furnace converts heating fuel to usable warmth at above-average rates, cutting winter bills
- 80,000 BTU heating capacity handles cold climates effectively for a 3-ton system
- Multi-speed blower motor adapts to demand, improving comfort and reducing energy waste
- Scroll compressor provides reliable cooling with low maintenance across R410A and R22 refrigerant compatibility
- 10-year warranty with online registration offers solid peace-of-mind protection at no extra cost
Cons
- Single-stage compressor and burner lack modulation capability, so efficiency drops at partial loads
- 73 dB noise level is audible during operation, louder than high-efficiency variable-speed units
- Not ENERGY STAR certified despite respectable 14 SEER rating, limiting rebate eligibility in some jurisdictions
Who Should Buy
Best For
Budget-conscious homeowners in regions with moderate to cold winters who replace their entire system and can leverage the PVC exhaust design. Contractors installing in existing homes benefit from the straightforward upflow configuration and compact 35-pound unit weight.
Consider Alternatives If
Homeowners seeking ENERGY STAR certification or those prioritizing quiet operation should explore variable-stage competitors, as this unit's single-stage design produces more noise and lower part-load efficiency.
Installation
The upflow/horizontal A-coil design fits tight spaces, and the 35-pound unit weighs less than many competitors, simplifying positioning. Liquid and suction lines measure 3/8 inch and 3/4 inch respectively, with insulation pre-installed at 3/4 inch thickness and rated for 30 feet of suction line run. Electrical demand runs 115V single phase 60 Hz with breaker sizing between 18.7 and 30 amps, matching standard residential service. PVC exhaust flue is required; older systems using metal venting need upgrades.
Warranty & Reliability
Goodman backs this unit with a 10-year parts and labor warranty upon online registration, no cost to activate. Coverage protects against compressor failure, furnace heat exchanger defects, and component malfunction within the specified window. Registration is mandatory to activate, so document purchase and complete enrollment promptly. Transferability to second owners is subject to Goodman's terms, so verify before resale.
Specifications
| SKU | LS38343830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 36,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 35.000000 |
| Feature | Spec |
| Energy Star | No |
| SEER1 (Efficiency) | 14 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Line | 3/8" |
| Suction Line | 3/4" |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 30 Amps |
| Min. Breaker Size | 18.7 Amps |
| Tonnage | 3.5 Ton |
| 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 | 92% |
| Blower Motor | Multi Speed |
| Maximum CFM | 1600 |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 30 feet |
Frequently Asked Questions
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