Review
The ACiQ 3.5 Ton 14 SEER air conditioner with vertical 21-inch uncased coil fills a specific niche in the residential HVAC market. This is a straightforward, no-frills condenser designed for retrofit applications where space constraints make traditional horizontal coil mounting impractical. ACiQ positions this unit as a value-conscious alternative to name-brand equipment, targeting contractors who need reliable cooling without premium pricing.
Performance specs tell a practical story here. The unit delivers 42,000 BTU of cooling capacity with a SEER rating of 14, placing it solidly in the mid-efficiency range. It runs on 208 or 230V single-phase power at 60 Hz, requiring a 22 to 35 amp breaker depending on circuit configuration. The scroll compressor operates single-stage, meaning it cycles on and off rather than modulating capacity, which simplifies operation but reduces efficiency during partial-load conditions common in spring and fall.
Pros & Cons
Pros
- Vertical 21-inch uncased coil design fits tight attic and closet spaces where standard horizontal coils won't work
- 42,000 BTU cooling capacity at 14 SEER efficiency meets Energy Star standards for mid-range residential applications
- Single-stage scroll compressor is proven, reliable, and requires less complex refrigerant tubing than variable-stage units
- 208/230V single-phase electrical requirement works with standard residential wiring, no three-phase conversion needed
- 10-year compressor warranty with online registration provides solid coverage for homeowner peace of mind
Cons
- 73 dB noise level is noticeably louder than many modern units, especially during peak cooling season
- Single-stage compressor runs at full capacity constantly rather than modulating, reducing efficiency during partial-load conditions
- Not Energy Star certified, meaning it misses out on utility rebates available in some regions
Who Should Buy
Best For
Contractors upgrading older systems in homes with limited mechanical space, particularly those with tight attics or utility closets where a vertical coil orientation is essential. Also suitable for homeowners in moderate climates where 14 SEER efficiency provides good value without premium pricing.
Consider Alternatives If
Skip this unit if you need Energy Star certification for rebate eligibility, live in a noise-sensitive area, or want variable-capacity cooling for better part-load efficiency.
Installation
Installation complexity is moderate. The vertical 21-inch coil design requires downflow or upflow mounting in confined spaces, which actually speeds installation compared to traditional horizontal arrangements. The 3/8-inch liquid line and 7/8-inch suction line use standard refrigerant tubing with 3/8-inch insulation. Most experienced contractors can complete rough-in and final connections within standard labor windows. Pre-charged coil requires careful handling to avoid refrigerant loss.
Warranty & Reliability
Goodman backs this unit with a 10-year compressor warranty when you register online, which is competitive for equipment at this price point. The warranty covers parts and labor on the scroll compressor and internal components. Full system coverage details depend on your installer's workmanship warranty. Registration is straightforward but required to activate the longer term.
Specifications
| SKU | ACIQ-4X-EHPD-UPG |
| Brand/Manufacturer | ACiQ |
| Cooling BTU | 42,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 120.000000 |
| Feature | Spec |
| Energy Star | No |
| SEER1 (Efficiency) | 14 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 22 amps |
| Tonnage | 4 Ton to 5 Ton |
| Height | 28" |
| Width | 20" |
| Depth | 20 1/8" |
| Resources | CAUF Installation Manual CAUF 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. |
| Configuration | Upflow / Downflow |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
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