Review
The Goodman 3-ton downflow gas furnace and air conditioner system delivers solid midrange performance at an accessible price point. This two-stage unit combines a 40,000 BTU furnace with a 35,000 BTU air conditioner, positioning itself as an efficient retrofit option for contractors and homeowners managing mixed heating and cooling demands. The variable-speed blower motor and dual-stage operation on both heating and cooling sides differentiate it from single-stage competitors in this price category.
Efficiency numbers tell the real story here. The furnace achieves 96% AFUE, meaning 96 cents of every heating dollar goes toward conditioning your home. The air conditioner reaches 18 SEER1 with a scroll compressor and two-stage cooling, pulling maximum cooling capacity when needed but running conservatively during partial-load conditions. Energy Star certification confirms these numbers meet federal efficiency standards. The 1,200 CFM maximum airflow with variable-speed ECM blower means the system adapts to your home's actual heating and cooling requirements rather than running full-bore constantly.
Pros & Cons
Pros
- 96% AFUE furnace efficiency with two-stage burners reduces heating costs significantly
- 18 SEER1 cooling efficiency and two-stage compressor lower summer utility bills
- Variable-speed ECM blower motor maximizes comfort while minimizing runtime energy consumption
- Two-stage operation on both heating and cooling enables precise temperature control
- PVC exhaust capability simplifies venting in retrofit installations where metal flues are unavailable
- 10-year warranty with online registration provides solid coverage for parts and labor confidence
Cons
- 35-amp maximum breaker requirement demands dedicated electrical service that older homes may lack
- 71 dB noise level is moderately loud for a condenser unit in noise-sensitive residential areas
- Product listing shows conflicting tonnage (3 ton in title but 5 ton in specs), creating potential confusion for sizing
Who Should Buy
Best For
Contractors installing replacement systems in homes with moderate heating and cooling demands will appreciate the two-stage efficiency and straightforward PVC venting. Homeowners in mixed climates seeking reasonable upfront costs combined with strong energy savings on both heating and cooling sides fit this system perfectly.
Consider Alternatives If
Buyers in extremely hot climates needing primarily cooling capacity or those in very cold regions prioritizing heating should evaluate higher-tonnage or single-fuel alternatives with specs more closely matched to their dominant season.
Installation
Downflow configuration suits basements and closeted installations where upward airflow isn't practical. Requires 115V single-phase 60Hz power with 21.3 to 35-amp breaker capacity, a detail critical for older electrical panels. PVC plastic exhaust venting simplifies retrofit jobs where metal flue runs are difficult. Sweat valve connections demand soldering competency. Suction line insulation at 3/4 inch thickness and 50-foot line length accommodation provide flexibility in equipment positioning relative to outdoor condensers.
Warranty & Reliability
Ten-year parts and labor warranty applies upon online registration, a standard but important step many homeowners skip. This coverage protects against compressor failure, heat exchanger problems, and most electrical components. Registration proof becomes crucial if warranty claims arise, so keep documentation after purchase. Coverage extends to properly installed systems only, meaning DIY installation voids protection.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 40,000 |
| Refrigerant | R410A or R22 |
| 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 | 5 Ton |
| Valve Type | Sweat |
| 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. |
| AHRI Certificate Number | 7368837 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1200 |
| Configuration | Upflow / Downflow |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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