Review
The Goodman 3-ton 18 SEER1 horizontal split system sits squarely in the contractor and homeowner sweet spot, offering genuine efficiency gains at pricing that won't shock budgets. At $89, this unit competes directly against mid-tier Bryant and Carrier offerings while delivering equivalent cooling capacity. The horizontal A-coil configuration makes it particularly useful for basement installations or tight attic spaces where vertical clearance limits options.
Performance specs reveal a competent piece of equipment built for real work. The 35,000 BTU cooling output handles typical 3-ton loads, while the 18 SEER1 rating qualifies for most state rebates. The variable-speed ECM blower motor caps out at 1,600 CFM and automatically modulates to match demand, reducing energy waste during partial-load operation. Two-stage compression adds efficiency at lower outdoor temperatures, though doesn't match variable-capacity systems in extremely mild climates.
Pros & Cons
Pros
- 18 SEER1 rating qualifies for Energy Star certification and most utility rebates, translating to measurable long-term savings
- Two-stage scroll compressor with variable-speed ECM motor provides better part-load efficiency than single-stage competitors
- 35,000 BTU cooling capacity properly sized for 3-ton applications in most residential climates
- Flexible electric backup heat options from 3kW to 15kW accommodate various heating needs and retrofit scenarios
- 10-year warranty with online registration covers components and compressor, standard for Goodman's value tier
Cons
- 71 dBA noise level runs louder than premium inverter-driven models, which can reach 60-65 dBA
- Two-stage compressor limits efficiency gains compared to newer variable-capacity designs in mild weather operation
- R410A refrigerant now being phased out by EPA, though systems remain serviceable for years
Who Should Buy
Best For
Homeowners in moderate climates replacing 15+ year old systems want efficient cooling without luxury pricing. Contractors building rental properties or managing large fleets appreciate the balance between performance and cost predictability.
Consider Alternatives If
Buyers in extreme-heat regions requiring maximum efficiency or those prioritizing whisper-quiet operation should evaluate higher-tier compressors with inverter technology.
Installation
Installation falls within standard residential scope, requiring 208/230V single-phase 60Hz power with minimum 21.9 amp and maximum 35 amp breaker sizing. The 228-pound unit fits standard A-coil cabinets, though the 35.5 by 35.5 inch footprint demands proper structural support. Sweat-type refrigerant connections with 3/8 inch liquid and 7/8 inch suction lines follow EPA best practices and minimize leak points.
Warranty & Reliability
Goodman backs this unit with 10 years parts and compressor coverage, activated through free online registration. This matches industry standards for equipment at this price tier. Coverage excludes user damage and improper installation, so professional setup protects your investment. Registration takes five minutes and provides documentation needed if service becomes necessary.
Specifications
| SKU | DSXC180361 |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 35,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 228.000000 |
| Feature | Spec |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1,600 |
| Electric Backup Heat Capabilities (Optional) | 3 Kilowatts, 5 Kilowatts, 6 Kilowatts, 8 Kilowatts, 10 Kilowatts, 15 Kilowatts |
| Max Breaker Size | 35 amps |
| Tonnage | 3 Ton |
| Height | 38.25" |
| Width | 35.5" |
| Depth | 35.5" |
| Resources | Goodman Specifications Goodman 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. |
| Configuration | Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Energy Star | Yes |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Min. Breaker Size | 21.9 amps |
| Valve Type | Sweat |
Frequently Asked Questions
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