Review
The Goodman 4-ton two-stage split system occupies the practical middle ground in residential air conditioning. At 16 SEER with ENERGY STAR certification, it outperforms base-model equipment without the premium pricing of high-end brands. The two-stage design and variable speed motor distinguish it from stripped-down competition. Contractors appreciate Goodman's reputation for straightforward installation and parts availability, while homeowners value the efficiency gains that typically offset equipment costs within 5-7 years.
Performance specifications tell a compelling story here. The unit delivers 48,000 cooling BTU with a scroll compressor operating in two stages, consuming less energy during partial-load conditions common in spring and fall. The variable-speed ECM blower motor maxes out at 2,040 CFM and automatically modulates to match demand. At 74 dB, noise levels stay acceptable for residential placement. The unit accepts 208, 230, or 240 volts single-phase power, making it compatible with most homes, though the 57-60 amp minimum breaker requirement may challenge older electrical panels.
Pros & Cons
Pros
- 16 SEER efficiency with ENERGY STAR certification reduces cooling costs by 20-30% vs. baseline models
- Two-stage compressor runs at 50% capacity for light loads, cutting energy waste and wear
- Variable speed ECM blower motor with 2,040 CFM maximum adapts airflow to demand
- Scroll compressor technology known for durability and quiet operation at 74 dB
- Sweat connections simplify installation compared to flare fittings on competing units
Cons
- 5-ton tonnage rating creates sizing mismatch with advertised 4-ton positioning, potentially oversizing smaller homes
- Requires 57-60 amp minimum breaker capacity, necessitating electrical panel upgrades in older homes
- 10-year warranty requires online registration, creating additional administrative burden at purchase
Who Should Buy
Best For
Homeowners in zones 3-5 seeking moderate efficiency gains with manageable budget, or contractors building spec homes where reliability and ease of installation matter. The two-stage operation and variable speed motor make it ideal for mixed-load climates with variable cooling demand.
Consider Alternatives If
Anyone with tight electrical service (less than 60-amp capacity) or needing premium 18+ SEER ratings should consider alternatives like higher-efficiency Lennox or Carrier models.
Installation
Installation requires standard split-system HVAC practices with sweat-connection fittings on both 3/8 inch liquid and 7/8 inch suction lines. The 58-inch height and 24.5-inch width fit standard outdoor pad footprints. Electrical installation demands dedicated 60-amp circuit with proper disconnect switch. Most licensed contractors complete installation in 4-6 hours. Goodman's detailed installation manual covers both standalone and heat pump configurations clearly.
Warranty & Reliability
Goodman provides 10 years parts coverage with online registration at purchase. Registration is essential, as unregistered units drop to standard limited warranty. Ten years covers manufacturing defects but excludes refrigerant and labor, which typically require service plans. This warranty ranks midrange against competitor offerings. For maximum protection, pair with a 10-year extended service plan covering labor and refrigerant.
Specifications
| SKU | HKSC20DB |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 48,000 |
| 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 |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| 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
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