Review
The Goodman CAPF3743C6 positions itself as an accessible entry point for homeowners ready to escape the inefficiency of older furnace and AC combos. At $762, this 2-ton system combines heating and cooling into a single upflow unit suitable for modest-sized homes or well-insulated spaces. Goodman's brand recognition among contractors carries real weight, though the company competes aggressively on price rather than premium positioning. For budget-conscious buyers who prioritize efficiency without premium features, this system deserves serious consideration.
Performance specs tell a compelling efficiency story. The furnace delivers 80,000 BTU of heating at 97% AFUE, meaning nearly all fuel becomes usable heat rather than escaping through the exhaust. On cooling, the air conditioner produces 24,000 BTU with 16 SEER rating, qualifying for Energy Star certification. A modulating burner adjusts flame intensity to match heating demand, while the variable-speed ECM blower reduces fan energy consumption. The two-stage scroll compressor operates at reduced capacity during mild weather, extending lifespan and lowering cooling costs compared to single-stage designs.
Pros & Cons
Pros
- Modulating burner stages reduce energy waste by adjusting heat output based on demand, not just on/off cycling
- 97% AFUE heating efficiency means nearly all fuel converts to usable heat, saving on winter utility costs
- Variable-speed ECM blower matches airflow to actual needs, improving comfort and reducing electricity draw compared to single-speed motors
- 16 SEER cooling efficiency qualifies as Energy Star certified and reflects solid air conditioning performance
- Two-stage compressor runs at partial capacity during mild conditions, lowering runtime and extending equipment life
- PVC exhaust flue compatibility offers installation flexibility in modern homes avoiding venting code complications
Cons
- 3.5-ton condenser paired with 2-ton furnace creates capacity mismatch, reducing system efficiency and complicating diagnosis if performance issues arise
- 71 dBA operating noise is moderately loud and may be noticeable in quiet residential settings
- Tonnage discrepancy suggests incomplete system matching at time of manufacture or resale
Who Should Buy
Best For
Contractors seeking affordable replacement systems for 2-ton applications in single-stage homes, and homeowners in mild to moderate climates replacing 15+ year old equipment where efficiency improvements alone justify the upgrade.
Consider Alternatives If
Anyone in high-demand cooling climates should verify 2-ton capacity meets their actual load before purchasing, as undersizing causes short-cycling and poor comfort.
Installation
The system requires 208/230V single-phase 60 Hz electrical service with breaker capacity between 15.7 and 20 amps. PVC exhaust flue compatibility simplifies venting in newer homes and avoids metal B-vent restrictions. Refrigerant lines use standard 3/8-inch liquid and 7/8-inch suction sizing. Installation complexity remains moderate for certified HVAC professionals but demands proper refrigerant evacuation, charging, and electrical connection. The 30x21x21-inch footprint fits standard closets and utility spaces. Upflow configuration suits basement or crawlspace placement in most homes.
Warranty & Reliability
Goodman backs the system with 10-year coverage following online registration. This duration protects against compressor failure, heat exchanger defects, and control board problems. Registration is essential, as coverage defaults to fewer years without it. Ten-year terms are industry standard for mid-tier equipment. Extended warranties may be available through dealers but examine terms carefully, as some exclude labor costs and refrigerant.
Specifications
| SKU | CAPF3743C6 |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 24,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 63.000000 |
| Feature | Spec |
| AHRI Certificate Number | 7424266 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Configuration | Upflow / Downflow |
| Energy Star | Yes |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural 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. |
| 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 | 3.5 Ton |
| Valve Type | Sweat |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
Frequently Asked Questions
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