Review
The Goodman 5-ton two-stage split system occupies the practical middle ground in residential HVAC. At 18 SEER, it outperforms entry-level units while remaining accessible to budget-conscious homeowners. The variable-speed ECM blower and two-stage compressor reflect real engineering choices that reduce runtime and energy waste. Goodman targets contractors and DIY-minded homeowners who understand that efficiency translates directly to monthly utility savings.
Real-world performance speaks clearly through the specs. The unit delivers 57,000 BTU cooling capacity running on R410A refrigerant, with a maximum CFM of 2,040 through a 23-inch by 20-inch filter. The two-stage condenser adjusts output based on demand, while the scroll compressor handles 68,200 BTU heating capacity when paired with supplemental electric heat options ranging from 5 to 20 kilowatts. That flexibility matters for both retrofit and new-build applications.
Pros & Cons
Pros
- 18 SEER efficiency rating delivers measurable operational savings compared to 13-14 SEER models
- Variable-speed ECM blower motor reduces cycling losses and improves dehumidification
- Two-stage compressor runs at partial capacity during mild weather, cutting energy consumption
- 57,000 BTU cooling capacity handles most residential 5-ton applications effectively
- 10-year warranty with online registration provides solid peace of mind coverage
Cons
- 74 dBA noise level runs louder than premium variable-speed competitors during full-capacity operation
- Not Energy Star certified, limiting appeal to efficiency-focused buyers
- Requires dual-breaker setup, 57-60 amps on circuit 1 and 50 amps on circuit 2, demanding electrical upgrades on older homes
Who Should Buy
Best For
Homeowners seeking a balance between upfront cost and long-term efficiency, especially those replacing 15+ year old single-stage systems. Contractors installing mid-market residential replacements where the two-stage design and variable-speed blower justify the step-up from basic single-stage equipment.
Consider Alternatives If
Buyers requiring Energy Star certification or those with electrical service limitations should explore other options.
Installation
Installation demands attention to electrical requirements. The unit requires 208, 230, or 240-volt single-phase service with two separate circuits, 57-60 amps for circuit 1 and 50 amps for circuit 2. Valve connections use standard 3/8-inch liquid and 7/8-inch suction sweat fittings. Detailed installation manuals and service documentation support contractor work, though older homes may need electrical service upgrades.
Warranty & Reliability
Goodman backs this unit with a 10-year warranty when you register online. Coverage addresses compressor and parts failures, a meaningful commitment in the mid-tier market. Registration takes minutes and unlocks the full protection period. This warranty level reflects reasonable confidence in the equipment without reaching the extended terms some premium brands offer.
Specifications
| SKU | HKSC20DB |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 57,000 |
| Heating BTU | 68,200 |
| Refrigerant | R410A |
| Electrical | 208 / 230 / 240 Volts / 1 Phase |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 74 |
| Weight (in lbs) | 9.000000 |
| Feature | Spec |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2,040 |
| Electric Backup Heat Capabilities (Optional) | 5 Kilowatts, 8 Kilowatts, 10 Kilowatts, 15 Kilowatts, 20 Kilowatts |
| Filter Size | 23" x 20" |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Max Breaker Size | Circuit 1: 60 amps / Circuit 2: 50 amps |
| Min. Breaker Size | Circuit 1: 57 amps / Circuit 2: 50 amps |
| Tonnage | 5 Ton |
| Fuel Type | Electric |
| Height | 38.25" |
| Width | 35.5" |
| Depth | 35.5" |
| Resources | Goodman Installation Manual Goodman Specifications Goodman Parts Manual Goodman Service Manual Goodman Kit Installation Manual 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. |
| Energy Star | No |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Valve Type | Sweat |
| Electric Heat | 20 Kilowatts |
| Phase | Single Phase |
Frequently Asked Questions
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