Review
The Goodman 3 Ton horizontal gas furnace and air conditioner system represents a straightforward, no-nonsense approach to home climate control. This combo unit pairs an 80,000 BTU furnace with a 35,000 BTU condenser, both featuring two-stage operation for efficiency gains across heating and cooling seasons. At this price point, the system offers contractors and homeowners a pragmatic alternative to premium brands without sacrificing meaningful performance or reliability.
Performance numbers are genuinely strong here. The furnace delivers 96% AFUE, which means minimal wasted fuel compared to standard 80% units, translating to measurable savings in natural gas or propane bills. The condenser achieves 18 SEER1 efficiency with scroll compressor technology and R410A refrigerant, supported by a variable-speed ECM blower capable of 1,600 CFM. Two-stage operation means the system runs at reduced capacity during mild weather, cutting runtime and energy consumption versus single-stage alternatives.
Pros & Cons
Pros
- 96% AFUE furnace efficiency significantly reduces heating costs versus standard 80% models
- 18 SEER1 two-stage condenser provides substantial cooling efficiency with variable speed ECM blower
- Two-stage burner and condenser allow quieter, more efficient operation at part-load conditions
- Lifetime heat exchanger warranty plus 10 years parts coverage protects major investment
- 80,000 BTU heating capacity handles 3 ton cooling load appropriately for balanced performance
Cons
- Price of $89 appears severely undervalued, suggesting this may be a condenser-only unit rather than complete system
- SEER1 rating of 18 is excellent but not top-tier, trailing premium brands by 2-4 points
- 71 dB noise level at full capacity may be noticeable in quieter installations
Who Should Buy
Best For
Homeowners in moderate climates replacing aging furnaces want maximum efficiency improvement without spending on premium brands. Contractors building value-oriented systems for price-conscious customers will appreciate the solid SEER1/AFUE specs and lower total cost.
Consider Alternatives If
If you need ultra-quiet operation or live in extreme cold climates requiring consistent high-stage heating, investigate variable-capacity or modulating furnaces instead.
Installation
This horizontal A-coil configuration fits standard attic and horizontal installations with minimal ductwork modification. The unit requires 115V single-phase 60Hz power with a 21.3 to 35-amp breaker, making it compatible with most residential panels. Refrigerant lines use 3/8 inch liquid and 7/8 inch suction sizing, with 3/4 inch insulation thickness for proper condensation control. PVC exhaust flue requirement simplifies venting through sidewalls or roofs.
Warranty & Reliability
Goodman backs this system with a lifetime heat exchanger warranty and 10 years of parts coverage upon online registration. The lifetime exchanger protection covers the furnace's most expensive potential failure point. Parts coverage provides substantial reassurance for compressors, blower motors, and electrical components during the critical early years when defects are most likely.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 80,000 |
| 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 | Two Stage Condenser |
| 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 | 3.5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| 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 | 7368835 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Flue Location | Right |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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