Review
The Goodman CAPF3636B6 positions itself as a solid middle-market choice, blending affordability with legitimate efficiency gains. This two-stage system delivers 80,000 BTU heating output and 24,000 BTU cooling capacity in an upflow configuration suitable for basement or closet installation. At $2,666, it undercuts premium brands while maintaining equipment-level specifications that matter: two-stage compression, variable-speed blower, and Energy Star certification. Goodman's reputation centers on no-frills durability rather than brand cachet, and this unit reflects that philosophy.
Performance metrics justify the efficiency claims. The 96% AFUE rating means nearly all fuel converts to usable heat, directly lowering winter gas bills. Cooling operates at 16 SEER, a respectable rating that qualifies for utility rebates in many markets. Two-stage operation lets the system run at partial capacity during mild weather, reducing on-off cycling and extending compressor life. The ECM variable-speed motor runs at 1,200 CFM maximum, modulating output based on demand rather than running full speed constantly. This approach improves humidity control and temperature consistency compared to single-stage units.
Pros & Cons
Pros
- 96% AFUE heating efficiency reduces natural gas bills significantly compared to older 80% units
- 16 SEER cooling rating qualifies for Energy Star and many regional rebates, lowering effective cost
- Two-stage compressor and burner stages allow part-load operation, reducing cycling and wear
- Variable-speed ECM blower motor adjusts airflow automatically, improving comfort and efficiency
- 10-year warranty with online registration covers parts and provides peace of mind on major failures
Cons
- Product title states 2 tons but specs show 3 tons, creating confusion about actual cooling capacity
- 71 dB noise level is moderately loud for residential settings, particularly during cooling cycles
- Requires PVC exhaust flue, limiting installation options in some older homes with masonry chimneys
Who Should Buy
Best For
Homeowners in regions with moderate to cold winters who heat with natural gas or propane and want measurable energy savings without boutique pricing. Contractors installing budget-conscious replacement systems where both heating and cooling matter equally.
Consider Alternatives If
Anyone needing quiet operation or living in homes that cannot accommodate PVC venting should explore alternatives.
Installation
Installation requires standard refrigerant connections using 3/8 inch liquid and 3/4 inch suction lines with sweat fittings. The unit needs 115V single-phase power with a 15.7 to 20 amp breaker, standard for most homes. PVC exhaust flue is mandatory, which eliminates compatibility with masonry chimneys. Upflow/horizontal orientation suits basements and utility closets. Professional installation is strongly recommended to ensure proper refrigerant charge and airflow matching.
Warranty & Reliability
The 10-year parts warranty activates upon online registration and covers compressor, coil, and other major components. This covers manufacturing defects but excludes normal wear, improper installation, or non-Goodman accessories. Registration takes minutes online and significantly increases your protection window. Ten years provides reasonable coverage in the HVAC industry, though some premium brands offer longer terms.
Specifications
| SKU | CAPF3636B6 |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 24,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 45.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 20 amps |
| Min. Breaker Size | 15.7 amps |
| Tonnage | 3 Ton |
| Valve Type | Sweat |
| Height | 26" |
| Width | 17.5" |
| 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 | 7368834 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| 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 | 3/4" |
| Style | A-Coil |
Frequently Asked Questions
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