Review
The Goodman 3.5 ton combo system represents a solid middle-ground choice in the HVAC market, balancing heating strength with modern cooling efficiency. At 120,000 BTU heating capacity and 42,000 BTU cooling output, it addresses homes where winter demands are substantial. The system arrives ENERGY STAR certified, which signals competent engineering across both heating and cooling components. Online Supply positions this unit as an accessible option for contractors seeking reliable equipment without premium pricing.
Performance metrics are compelling on the heating side, with 96% AFUE furnace efficiency ranking among the best available for gas furnaces. The 16 SEER air conditioning rating is respectable but not exceptional, hitting mainstream efficiency targets rather than ultra-high-end performance. Variable-speed ECM blower technology allows the furnace to ramp output intelligently, reducing energy waste during partial-load operation. Two-stage burner design gives the heating system similar flexibility, adapting to outdoor temperature swings rather than simply cycling on and off.
Pros & Cons
Pros
- 96% AFUE furnace efficiency means minimal gas waste, saving $200-400 annually on heating costs versus older units
- 16 SEER air conditioner qualifies for Energy Star certification and delivers solid cooling for 42,000 BTU capacity
- Two-stage burner and variable-speed ECM blower allow the system to modulate down for quieter, more efficient part-load operation
- 120,000 BTU heating output handles larger homes or properties with significant heating demands
- Scroll compressor is proven reliable technology with fewer moving parts than alternatives
Cons
- Product listing shows confusing specs, listing both 3.5 ton and 5 ton tonnage which creates uncertainty about actual cooling capacity
- Single-stage condenser means the AC cannot modulate cooling, only cycles on and off, reducing efficiency during mild weather
- 73 dB noise level is moderately loud, comparable to a vacuum cleaner, which may be noticeable in quieter neighborhoods
Who Should Buy
Best For
Contractors and homeowners in northern climates where heating dominates the annual energy load should prioritize this system. It's particularly suited for homes needing robust winter performance without sacrificing modern cooling standards.
Consider Alternatives If
Buyers in mild climates where cooling is the primary concern should look at higher SEER systems instead, as the 16 SEER rating, while good, is mid-range rather than premium.
Installation
This system uses standard refrigerant connections with 3/8 inch liquid line and 7/8 inch suction valve sizing. The PVC or plastic exhaust flue requirement simplifies venting compared to masonry chimneys. Electrical demands are moderate at 115V, single-phase, 60 Hz, requiring a 23.5 to 40-amp breaker. A-coil configuration fits standard furnace closets, though 30 inch height should be verified against space constraints.
Warranty & Reliability
Goodman provides 10-year coverage when you register the unit online, a standard industry practice that requires minimal effort. This covers manufacturing defects but not installation errors or neglected maintenance. Online registration through the manufacturer is required, so maintain your proof of purchase and follow manufacturer guidance for activating warranty protection.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 120,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| 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 | 40 amps |
| Min. Breaker Size | 23.5 amps |
| Tonnage | 5 Ton |
| Height | 30" |
| Width | 24.5" |
| 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. |
| AHRI Certificate Number | 7368842 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.