Review
The Goodman CAPT3743D4 occupies the practical middle ground of residential HVAC equipment, offering contractors and homeowners proven components at a price point that doesn't demand system sacrifices. Rated at 3 tons for cooling and 3.5 tons heating capacity with 120,000 BTU input, this upflow-configured unit targets single-family homes and light commercial applications where budget discipline and reliable performance matter equally.
The furnace delivers 96% AFUE efficiency through two-stage burner design, cutting heating losses to just 4%, while the air conditioning side produces 36,000 BTU cooling at two-stage capacity. The variable-speed ECM blower motor ranges from idle to 2000 CFM maximum, adapting to load conditions rather than cycling at full power. Using R410A refrigerant and a scroll compressor, the system generates 70.4 dB at full operation, comparable to standard residential equipment without acoustic treatment.
Pros & Cons
Pros
- 96% AFUE furnace efficiency beats industry baseline by significant margin, reducing heating costs measurably
- Two-stage burner and condenser provide part-load efficiency for milder weather operation
- Variable-speed ECM blower motor adjusts airflow from 0-2000 CFM, improving comfort and reducing runtime waste
- Energy Star certified system qualifies for utility rebates that can offset initial cost
- Upflow/horizontal configuration adapts to basement, closet, or attic installations
Cons
- SEER rating listed as 16 appears to conflict with title specification of 15 SEER, creating clarity issues
- 70.4 dB noise level puts it slightly above quieter competitors during compressor operation
- Scroll compressor and R410A refrigerant are standard but not cutting-edge technology
Who Should Buy
Best For
Contractors outfitting rental properties, new construction, or replacement projects in zones 4-6 will appreciate this system's balance of efficiency and affordability. Homeowners with moderate cooling loads in temperate climates get dependable performance without oversizing equipment or overpaying for premium features.
Consider Alternatives If
Skip this unit if you need a high-efficiency air conditioning system for extreme heat climates, as the cooling efficiency and tonnage may underperform in zones 1-3 or for larger homes exceeding 2500 square feet.
Installation
Installation suits standard upflow/horizontal ducting in basements, closets, or utility spaces. The unit requires 208/230V single-phase power at 21.8-35 amps, plastic PVC exhaust flue compatible with modern code requirements, and standard sweat valve connections using 3/8-inch liquid and 7/8-inch suction lines. Technicians familiar with Goodman equipment will navigate setup efficiently.
Warranty & Reliability
Goodman backs this system with a 10-year parts warranty upon online registration, protecting against compressor, heat exchanger, and component failures. This coverage matches competitor offerings at similar price points and provides meaningful security for owners planning 10-15 year equipment lifecycles. Registration is straightforward and essential to activate full benefits.
Specifications
| SKU | CAPT3743D4 |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 36,000 |
| Heating BTU | 120,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 70.4 |
| Weight (in lbs) | 75.000000 |
| Feature | Spec |
| 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 |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 24.5" |
| Depth | 21" |
| Resources | CAPT Installation Manual CAPT 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 | 35 amps |
| Min. Breaker Size | 21.8 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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