Review
Goodman's 3-ton combined gas furnace and air conditioning system targets homeowners seeking unified heating and cooling from a single, trusted manufacturer. This upflow configuration fits standard basement and attic installations common across North America. The system combines a 96% AFUE furnace with a two-stage 18 SEER2 condenser, placing it squarely in the efficiency-conscious mid-market where real energy savings matter without premium pricing.
Performance specs reflect genuine equipment capability. The furnace delivers 120,000 BTU heating with two-stage burners, while the condenser handles 35,000 BTU cooling across two compressor stages. Variable speed ECM motor technology reaches 2000 CFM maximum, enabling better humidity control and comfort during partial-load conditions. R410A refrigerant and sweat connection valves (3/8 inch liquid, 3/4 inch suction) represent current industry standards. The 71 dB noise level stays reasonable for residential operation.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces monthly heating costs by 15-25% compared to older single-stage units
- 18 SEER2 rating on the condenser places it above standard 16 SEER2 baseline for real cooling savings
- Variable speed ECM blower motor with 2000 CFM maximum capacity improves temperature consistency and air distribution
- Two-stage compressor and burner system allows partial-load operation, cutting runtime and energy waste during mild weather
- Lifetime heat exchanger warranty plus 10-year parts coverage with registration provides strong long-term protection
Cons
- Spec sheet shows 120,000 BTU heating capacity but lacks clarity on actual heating output after flue loss
- Two-stage design costs more upfront than single-stage alternatives, requiring 3-5 year payback on efficiency gains
- Plastic PVC exhaust flue requirement limits installation flexibility in some retrofit applications
Who Should Buy
Best For
Homeowners in northern climates prioritizing heating efficiency or those replacing failed furnaces who want one system covering both heating and cooling needs. Contractors building new construction or major renovations benefit from the AHRI certification (7368842) and integrated two-stage design.
Consider Alternatives If
Budget-conscious buyers uncomfortable with upfront costs should compare single-stage alternatives, and anyone unable to run 115V 60Hz power near the condenser location should look at different placement options.
Installation
Installation requires 115V single-phase 60Hz power with breaker sizing between 21.3 and 35 amps, standard for most homes. The A-coil upflow design (34.5 inches tall, 24.5 inches wide, 28.75 inches deep) fits typical 16-inch on-center framing. Plastic PVC exhaust flue simplifies venting compared to metal alternatives. AHRI certificate 7368842 confirms proper match between furnace and condenser for warranty validation.
Warranty & Reliability
Goodman backs the heat exchanger for the lifetime of original ownership, protecting against the most expensive component failure. Parts coverage extends 10 years with online registration, covering compressor, blower motor, and control boards. This warranty structure reflects mid-tier confidence in component longevity. Registration is essential, as coverage lapses without documentation.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 120,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | Lifetime Heat Exchanger and 10 Years Parts with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Product Features | Rebate Available |
| Energy Star | Yes |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 21.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 24.5" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Install 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 |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7368842 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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