Review
The Goodman 3 Ton 15 SEER 97% AFUE system delivers solid midmarket performance for mixed-climate homes. Online Supply positions this unit as a workhorse for contractors and homeowners seeking reliable heating and cooling without luxury pricing. The modulating furnace and variable-speed blower reflect Goodman's practical engineering approach. Energy Star certification and rebate eligibility signal efficiency credentials that matter on utility bills. This downflow configuration suits common installation scenarios in residential applications.
Performance numbers tell the story here. The 97% AFUE rating means 97 cents of every heating dollar reaches your home, compared to 80-90% for older furnaces. Cooling delivers 34,800 BTU at 16 SEER2, with a scroll compressor handling single-stage operation. The variable-speed ECM blower adjusts to 1,600 CFM maximum, running efficiently at partial capacity. Modulating burners fire at 80,000 BTU maximum, reducing temperature swings and short-cycling. Electrical requirements are modest, needing 18.7 to 30 amps at 115V single-phase 60 Hz.
Pros & Cons
Pros
- 97% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% models
- Modulating burner adjusts output to match demand, improving comfort and lowering operating costs
- Variable-speed ECM blower motor runs only as needed, cutting electricity use compared to fixed-speed alternatives
- 16 SEER2 cooling efficiency qualifies for Energy Star certification and available rebates
- 10-year warranty with online registration covers both furnace and air conditioner
- Downflow/horizontal A-coil configuration suits attics, basements, and tight spaces
Cons
- Single-stage cooling cannot match two-stage or variable capacity systems in partial-load efficiency
- 73.5 dB noise level is average, so noise-sensitive homeowners may notice operation during heating cycles
- Specs show conflicting tonnage claims between title (3 ton) and actual rating (5 ton), creating confusion
Who Should Buy
Best For
Homeowners in moderate to cold climates looking to lower heating bills without spending on top-tier equipment. This system makes sense for those with moderate cooling needs who prioritize furnace performance and want reliable, efficient operation for 15+ years.
Consider Alternatives If
Buyers in hot climates where cooling dominates should consider two-stage or variable-capacity compressors for better part-load efficiency. Those demanding ultra-quiet operation should look at models rated below 70 dB.
Installation
Installation fits standard residential setups. Downflow/horizontal orientation works in attics, basements, and utility closets. PVC flue venting simplifies installation compared to metal duct. Line sets require 3/8-inch liquid and 7/8-inch suction connections, both common sizes. The 3/4-inch suction line insulation prevents condensation. Unit weighs 30 pounds and measures 34.5 inches tall, 21 inches wide, and 28.75 inches deep, fitting most equipment closets.
Warranty & Reliability
Goodman provides 10 years of coverage on both furnace and air conditioner components when registered online. This warranty covers defects in materials and workmanship on the compressor, heat exchanger, and other major parts. Homeowners benefit from straightforward protection at no extra cost. Registration through Online Supply activates coverage immediately after installation.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73.5 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 30 amps |
| Min. Breaker Size | 18.7 amps |
| Tonnage | 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 | Downflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7424271 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| 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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