Review
Goodman's 4-ton variable-speed split system lands squarely in the practical midrange of modern air conditioning. With an 18 SEER2 rating, Energy Star certification, and two-stage cooling design, it appeals to homeowners seeking better efficiency than baseline units without venturing into premium pricing. The variable-speed ECM motor and scroll compressor indicate Goodman's focus on balancing performance with operational cost over the unit's lifespan.
This condenser delivers 47,000 BTU of cooling capacity with the flexibility to modulate between stages, meaning it runs at roughly 50-75 percent output on moderate days. The variable-speed blower maxes out at 2,040 CFM but ramps down when full cooling isn't needed, reducing energy waste. At 72 dB, it's acceptably quiet for most residential yards, though not silent. The 18 SEER2 efficiency translates to roughly 15-20 percent lower annual cooling costs compared to 14 SEER units in temperate climates.
Pros & Cons
Pros
- 18 SEER2 efficiency rating qualifies for Energy Star, delivering measurable lower electric bills year-round
- Variable-speed ECM blower motor adapts to demand, reducing unnecessary runtime and noise at part load
- Two-stage compressor allows 50-75 percent capacity operation for milder days, further boosting efficiency
- 10-year warranty with online registration covers major components and parts replacement
- Scroll compressor design offers proven reliability and quieter operation than rotary alternatives
Cons
- Tonnage spec discrepancy in documentation, listed as both 4 and 5 tons, creating confusion at purchase
- 72 dB noise level is moderate, not best-in-class for noise-sensitive installations or bedroom proximity
- Requires dual circuit breaker setup (60 and 50 amp minimum), adding electrical complexity and cost
Who Should Buy
Best For
Homeowners in mild-to-moderate climates replacing 10-plus year old air conditioners and willing to invest in efficiency should prioritize this unit. Contractors valuing Goodman's parts availability and technical support will find this a reliable, cost-effective solution for residential replacements.
Consider Alternatives If
Budget buyers needing absolute cheapest installed cost or those in extreme heat zones requiring consistent maximum cooling capacity should explore higher-tonnage or higher-SEER alternatives.
Installation
Installation requires standard 208, 230, or 240-volt single-phase power with dual circuit protection: 57-60 amps for circuit one and 50 amps for circuit two. The unit measures 58 inches tall, 24.5 inches wide, and 21 inches deep, fitting most standard outdoor condenser pads. Sweat-type valve connections (3/8-inch liquid, 7/8-inch suction lines) demand proper brazing skills or professional installation to avoid refrigerant leaks and performance loss.
Warranty & Reliability
Goodman backs this unit with 10 years of parts and labor coverage when registered online, a solid protection period that covers compressor, condenser coil, and blower motor failures. Registration is straightforward and required to activate full coverage. For buyers planning to stay in their home 8-10 years or longer, this warranty meaningfully reduces replacement risk and repair costs.
Specifications
| SKU | HKSC20DB |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 47,000 |
| Heating BTU | 68,200 |
| Refrigerant | R410A |
| Electrical | 208 / 230 / 240 Volts / 1 Phase |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 72 |
| Weight (in lbs) | 9.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 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 |
| Valve Type | Sweat |
| Height | 58" |
| Width | 24.5" |
| Depth | 21" |
| 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. |
| 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" |
| Fuel Type | Electric |
| Electric Heat | 20 Kilowatts |
| Phase | Single Phase |
Frequently Asked Questions
Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.