Product overview
ACiQ 18,000 BTU 1.5 Ton 25 SEER2 Multi Zone Condenser Extreme Series | Inverter - R454B
Summary
The ACiQ Extreme Series ACIQ-18Z-HH-M3C is a premium multi-zone heat pump condenser featuring Extreme Heat technology for superior low-temperature performance. With an outstanding 25 SEER2 rating and 10.4 HSPF2, this 18,000 BTU (1.5 Ton) inverter system delivers exceptional efficiency in both heating and cooling modes.
This heavy-duty unit operates in extreme temperatures from -22°F to 122°F, with integrated base pan heater and Gold Fin coil protection for maximum durability. Designed to support up to 3 indoor air handlers (maximum 22,500 BTU total capacity), it provides zoned comfort with different temperature settings for each space.
The advanced inverter technology constantly adjusts performance for optimal efficiency and quiet operation (61.5 dB), while the rotary compressor ensures reliable performance in demanding conditions.
Important
Professional installation required - not a DIY unit. Registration required within 60 days for full warranty. Minimum two air handlers must be connected for operation. Installation kit not included.
What's Included
- Extreme Series Outdoor Condenser Unit [SKU: ACIQ-18Z-HH-M3C]
- Installation Manual
- Owner's Manual
- Manufacturer Warranty Information
Key Features:
- Extreme Heat Technology (-22°F operation)
- 25 SEER2 / 10.4 HSPF2 Efficiency
- Multi-Zone Operation (Up to 3 indoor units)
- Integrated Base Pan Heater
- Gold Fin Condenser Coil Protection
- Quiet Operation (61.5 dB)
- Energy Star Certified
- 208/230V Power Supply
- R454B Refrigerant
- Rotary Compressor
- Low Ambient Heating
- Rebate Available
Technical Information
Model Number: ACIQ-18Z-HH-M3C
| System Type | Multi-zone heat pump (2-3 zones) |
| Cooling Capacity | 19,000 BTU |
| Heating Capacity | 20,000 BTU |
| Tonnage | 1.5 Ton |
| Power Source | 208/230V, 1Ph, 60Hz |
| SEER2 Rating | 25 |
| SEER Rating | 21-22 |
| HSPF2 Rating | 10.4 |
| EER | 12.5 |
| Refrigerant | R454B |
| Refrigerant Charge | 73.8 oz |
| Operating Temp Range | -22°F to 122°F |
| Noise Level | 61.5 dB(A) |
| Line Set Connections | 3/8" suction (3), 1/4" liquid (3) |
| Electrical Requirements | 17.5-20A breaker |
| Dimensions (WxDxH) | 42.91x19.68x34.84 in |
| Weight | 148.15 lbs |
| Compressor Type | Rotary |
| Electric Heat | Heat Pump |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Multi Zone |
| AHRI Certificate | 216032361 |
| Energy Star Certified | Yes |
Warranty
- 12 year compressor limited warranty (with registration)
- 7 year parts limited warranty (with registration)
- Professional installation required
- View Full Warranty Details
Compatible Systems
This Extreme Series condenser supports up to 3 ACiQ indoor units with total capacity up to 22,500 BTU. Compatible with:
- ACiQ Wall Mounted Air Handlers (9K, 12K, 18K BTU)
- ACiQ Ceiling Cassette Units
- ACiQ Slim Duct Units
Zone Combination Examples
| 2-ZONE SYSTEMS | 3-ZONE SYSTEMS |
| 9K + 9K (18K) | 9K + 9K + 9K (27K)* |
| 9K + 12K (21K) | 9K + 9K + 12K (30K)* |
| 12K + 12K (24K)* | 9K + 12K + 12K (33K)* |
*Note: Maximum recommended total connected capacity is 22,500 BTU (1.25 × outdoor unit capacity). "K" = 1,000 BTU
Certifications
Energy Star Certified | AHRI Certified | EPA Refrigerant Compliant
Manuals & Downloads
- Installation and Owner's Manual
- Product Submittal Data
- Warranty Information
- Heat Performance Chart
- AHRI Certificate - Ducted Indoor Units
- AHRI Certificate - Non-Ducted Indoor Units
Safety Information: PROPOSITION 65 WARNING
In-stock systems ship fast and free with curbside freight delivery, typically arriving in 4–10 days. Please inspect each box at delivery and note any damage on the receipt before signing — it keeps any freight claim quick and simple.
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At a glance
Tech specs
| Condenser capacity | 18K BTU |
|---|---|
| Zones / rooms | 2 Zones |
| Mount type | Wall |
| Installation | DIY |
| Brand | ACiQ |
Sizing in doubt? Our HVAC experts confirm capacity for your rooms before you order — free. Ask us about utility rebates for high-efficiency heat pumps in your area.
