Review
Goodman's 3 Ton 18 SEER heat pump system occupies a sweet spot in the mid-market HVAC landscape. Positioned below boutique brands but above budget-tier equipment, this variable-speed unit targets contractors and homeowners who want measurable efficiency gains without flagship pricing. The 18 SEER1 rating reflects genuine performance improvements over older R22 systems or basic single-stage equipment, making this a practical upgrade for most cooling-dominant regions with moderate heating needs.
The numbers tell a compelling efficiency story. An 18 SEER1 rating means annual energy consumption roughly 30 percent lower than baseline 13 SEER units. The variable-speed ECM blower and two-stage compressor create operational flexibility, ramping down during mild days and cycling off partially rather than running constantly at full capacity. Heating and cooling output both reach 35,000 BTU, with optional electric backup ranging from 3 kW to 15 kW depending on your climate zone. The scroll compressor and R410A refrigerant represent current industry standards.
Pros & Cons
Pros
- 18 SEER1 efficiency rating qualifies for Energy Star and most utility rebates, reducing long-term operating costs significantly
- Variable-speed ECM blower motor adjusts output automatically, improving comfort and reducing energy waste compared to single-speed units
- Two-stage compressor allows part-load operation in mild weather, using only the cooling capacity needed rather than full output
- Compact 21x21x30 inch footprint and relatively light 30-pound weight simplifies installation in tight spaces
- 10-year warranty with online registration provides solid protection for a mid-tier unit at this price point
Cons
- 72 dB noise level is audible and somewhat louder than premium variable-speed units, which may concern noise-sensitive homeowners
- 3.5 ton actual capacity versus 3 ton rating suggests possible oversizing for some applications, requiring careful load calculation
- Requires 21.9 amp minimum breaker despite 15 amp maximum rating creates unusual electrical specification that installers should verify carefully
Who Should Buy
Best For
Contractors and homeowners replacing 10-to-15-year-old AC systems in mixed climates where heating and cooling are both required. This unit works especially well in transitional climates where a heat pump provides primary heating with optional electric backup.
Consider Alternatives If
Those seeking whisper-quiet operation should look elsewhere, as the 72 dB output is noticeably louder than premium units. Premium brand loyalists may also want to explore their preferred manufacturer's equivalent.
Installation
Installation requires 208/230V single-phase power with a 21.9 amp minimum breaker, though specifications oddly list 15 amps maximum. Pre-charge linesets come in 50-foot lengths with 3/4-inch suction line insulation, standard for residential applications. The compact footprint and light 30-pound weight ease handling, but the unit's A-coil configuration demands proper upflow or downflow positioning matching your existing ductwork orientation.
Warranty & Reliability
Goodman backs this unit with a 10-year warranty when registered online, covering both parts and labor during this period. This is solid protection for a mid-tier system and shows the manufacturer's confidence in reliability. Warranty registration is straightforward and essential, as unregistered units receive reduced coverage periods.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 35,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 72 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Product Features | Two Stage Condenser |
| 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 | 15 amps |
| Min. Breaker Size | 21.9 amps |
| Tonnage | 3.5 Ton |
| Valve Type | Sweat |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF 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. |
| 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 |
| Configuration | Upflow / Downflow |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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