Review
The Goodman 3.5-ton combo system represents a straightforward, no-frills approach to residential HVAC replacement. At $647, this downflow configuration bundles a furnace and air conditioning coil in one compact footprint, measuring 30 inches tall with a 21-by-21-inch profile. It's positioned squarely in the value segment, where contractors and homeowners prioritize dependable mid-range performance over cutting-edge efficiency or smart features. Goodman's reputation for durability in commercial and residential applications backs this entry-level offering.
Performance specs indicate solid baseline efficiency rather than premium ratings. The furnace delivers 92% AFUE with 42,000 BTU heating output, while the matching A-coil cooling section produces 42,000 BTU (3.5 tons) at 14 SEER using R410A refrigerant. Both components earned Energy Star certification, confirming they exceed federal minimums. The multi-speed blower motor maxes out at 2,000 CFM and operates at 73 dBA, a reasonable noise level for mid-capacity residential systems. Single-stage burner and condenser design keeps complexity and cost down, though efficiency drops noticeably during partial-load operation.
Pros & Cons
Pros
- 92% AFUE furnace efficiency significantly exceeds minimum federal standards of 80%
- 14 SEER cooling efficiency with R410A refrigerant meets Energy Star requirements
- Complete 3.5-ton combo system eliminates shopping for separate furnace and coil components
- Multi-speed blower motor allows for optimized airflow and quieter operation at 73 dBA
- 10-year warranty with online registration covers parts and labor on major components
- PVC exhaust flue compatibility reduces installation costs compared to traditional metal venting
Cons
- Single-stage burner and condenser limit part-load efficiency in moderate weather
- 42,000 BTU heating output may require supplemental heat in harsh climates above 50 degrees north
- SEER rating of 14 is adequate but trails high-efficiency units rated 18-22 SEER
- Plastic PVC venting requires careful installation to prevent condensation issues in cold climates
Who Should Buy
Best For
Homeowners and contractors in moderate climate zones (IECC zones 4-5) who prioritize upfront cost savings over maximum energy efficiency. This system works particularly well for rentals, new construction with tight budgets, or replacement scenarios where the existing ductwork is already sized for 3.5-ton capacity.
Consider Alternatives If
High-efficiency seekers in very cold climates should explore higher SEER/AFUE units, and homeowners in areas with frequent part-load operation may benefit from variable-capacity alternatives.
Installation
This downflow configuration suits basement or attic installation in homes with space constraints. The system requires 208/230V single-phase power with breaker sizing between 22.4 and 35 amps, standard for most residential panels. Flue location on the right side accommodates common PVC venting to exterior walls. The scroll compressor and multi-speed motor are established technologies with familiar service procedures. R410A refrigerant lines use 3/8-inch liquid and 1-1/8-inch suction sizes with pre-insulated 50-foot line sets, streamlining installation time.
Warranty & Reliability
Goodman backs this unit with a 10-year parts and labor warranty when registered online. Coverage applies to compressor, heat exchanger, and blower components. This warranty is standard for the budget segment but trails high-end manufacturers offering 10-year or limited lifetime coverage on compressors. Registration is simple and documentation comes with the unit.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 42,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 92% |
| Blower Motor | Multi Speed |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil 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. |
| Product Features | Rebate Available |
| 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 | 35 amps |
| Min. Breaker Size | 22.4 amps |
| Tonnage | 3.5 Ton |
| Valve Type | Sweat |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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