Review
Goodman's 3 Ton gas furnace and air conditioner combination represents solid middle-market positioning in the split system category. Priced at $736, this upflow A-coil configuration addresses the contractor demand for dependable equipment that balances efficiency gains with installation simplicity. Energy Star certification and 10-year warranty support appeal to both professional installers and DIY homeowners managing their own replacements. The modulating furnace and two-stage compressor design signal commitment to comfort control, not just baseline performance.
Performance metrics justify the mid-tier positioning. The furnace delivers 97% AFUE with a modulating burner firing from 20 to 100 percent capacity and 100,000 BTU output, while the condenser achieves 18 SEER2 efficiency (exceeding the stated 17 SEER rating) with scroll compressor technology. The variable-speed ECM blower reaches 2000 CFM maximum, adapting to heating and cooling demands without excessive noise in lower stages. R410A refrigerant and 3/8 inch liquid line sizing support industry standards for proper charge and system balance.
Pros & Cons
Pros
- 97% AFUE furnace rating means superior heating efficiency and lower natural gas bills
- 18 SEER2 cooling efficiency exceeds the listed 17 SEER spec, with two-stage compressor for part-load performance
- Modulating burner adjusts output across 20 to 100 percent of capacity, reducing short cycling and improving comfort
- Variable-speed ECM blower motor with 2000 CFM maximum capacity provides consistent airflow and quieter operation at part load
- Energy Star certified with 10-year warranty via online registration, protecting your investment
Cons
- 71 dB noise level runs louder than some high-end competitors, noticeable during heating cycles
- Spec sheet lists conflicting tonnage (3 Ton title versus 3.5 Ton specs), creating potential confusion for sizing verification
- Requires PVC exhaust flue with plastic ducting, limiting installation flexibility in older homes with masonry chimneys
Who Should Buy
Best For
This system fits contractors managing mid-range residential replacements and homeowners seeking reliable efficiency without high-end pricing. Ideal for single-stage to two-stage upgrades where modulating comfort and AFUE performance justify the investment.
Consider Alternatives If
Avoid this unit if noise sensitivity is critical, your home uses propane exclusively without backup natural gas, or your installation requires masonry chimney venting without PVC conversion.
Installation
Installation requires standard 115V single-phase power with breaker sizing between 21.3 and 35 amps, accessible in most homes. The upflow/horizontal configuration fits tight spaces with 34.5 inch height and 21 inch width. PVC plastic flue exhaust simplifies venting in modern construction but demands conversion work if your home uses traditional masonry chimneys. Suction line insulation comes pre-installed at 3/4 inch thickness, reducing field prep time.
Warranty & Reliability
Goodman provides 10 years parts coverage upon online registration, a standard benefit in this price category. Coverage protects against compressor failure and component defects but excludes maintenance and wear items. Registration takes minutes and should be completed immediately after installation to activate benefits and establish claim eligibility.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years 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 | 3.5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Specifications 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 | 7424267 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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