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ACiQ 3.5 Ton Inverter Heat Pump – Extreme Heat Series (Model ACiQ-42-HPD) Built for demanding climates, the ACiQ-42-HPD delivers 12,000–50,000 BTUs of adaptive heating and cooling, with 100% heat output at 0°F and 80% at -22°F. Inverter technology, a smart learning condenser, and adaptive sizing ensure energy-efficient comfort year-round. Designed for ducted applications, this unit features eco-friendly R454B refrigerant, quiet performance, and a durable gold fin coil—making it a reliable choice even under extreme conditions.
Inverter-Driven Flexibility: Harnesses inverter technology to convert AC power to DC, enabling the compressor to adjust its speed. This allows the system to self-adjust BTU output based on demand—providing between 12,000–42,000 BTU for cooling and 12,000–50,000 BTU for heating, ensuring energy-efficient operation in varying weather conditions.
Smart Learning Condenser: Equipped with advanced sensors that monitor indoor and outdoor temperatures, duct pressure, refrigerant temperature, and overall system performance. Upon startup, the system enters a learning mode, optimizing future operations for energy savings and peak efficiency.
Adaptive Sizing for Custom Comfort: The ACiQ-42-HPD adjusts its capacity based on heating demands, providing ideal performance year-round. Unlike standard heat pumps, it prevents discomfort during hot months by automatically reducing the system's output for superior cooling performance with minimal humidity.
Extreme Heat Technology for Cold Climates: The ACiQ-42-HPD is engineered for extreme cold temperatures, providing reliable heating down to -22°F. It maintains 100% heat output at 0°F and 80% at -22°F, allowing the system to extract maximum heat even during subzero conditions—saving up to 75% on cold-weather heating costs compared to systems that rely on electric backup heat.
Versatile Year-Round Performance: This heat pump operates efficiently in both heating and cooling modes from -22°F to 122°F. Whether it's hot or cold outside, the system adjusts its output to maintain a comfortable indoor environment.
Environmentally Conscious R454B Refrigerant: Uses R454B refrigerant, which has a low global warming potential (GWP), making it a more sustainable and eco-friendly option for homes and businesses.
Gold Fin Condenser Coil Protection: The corrosion-resistant gold fin coating on the condenser coils helps increase the system's longevity and performance, particularly in areas with high humidity or corrosive environments like coastal regions.
Quiet and Reliable Operation: Designed for whisper-quiet operation, even during high-demand workloads, making it an ideal choice for both residential and commercial spaces where noise reduction is a priority.
Ducted System Compatibility: Easily integrates with existing ducted systems for seamless installation, providing an efficient solution to upgrade from older, less efficient heating and cooling units.
Brand | ACiQ | SKU | ACiQ-42-HPD |
Refrigerant Charge | 25' | Weight (in lbs) | 232.360000 |
Brand/Manufacturer | ACiQ | Replaces | ACiQ-42-HPB |
Product Features | Inverter, Low Ambient Heating, Two Stage Condenser, Variable Speed Condenser | ||
HSPF2 | 9.5 | Cooling BTU | 42,000 BTU |
Heating BTU | 50,000 BTU | Maximum CFM | 3037 |
Decibel Level (dBA) | 65 | Electric Heat | Heat Pump |
Refrigerant | R454B | SEER2 (Efficiency) | 16.7 |
Condenser Stages | Variable Speed | Compressor Type | Rotary |
Liquid Valve Size | 3/8" | Suction Valve Size | 3/4" |
Electrical | 208/230V 1 Phase 60 Hz | Max Breaker Size | 40 Amps |
Min. Breaker Size | 38 Amps | Tonnage | 3.5 Ton |
BTU/Tonnage | 42,000 BTU / 3.5 Ton | Min/Max Outdoor Temp for Heating | -22°F - 75°F |
Min/Max Outdoor Temp for Cooling | -22°F - 122°F | Ambient Temperature Range | -22°F - 122°F |
Height | 38.4" | Width | 38.6" |
Depth | 16.3" | Warranty | 12 Years Compressor and 7 Years Parts with Online Registration |
Warranty Type | Parts | Compressor |
Standard Warranty | 5 year parts | 7 year parts |
Registered Warranty | 7 year parts | 12 year parts |
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I bought this lift for my home garage since I’m always working on cars as a hobby. Installation was straightforward with a buddy’s help. The build quality feels like commercial shop grade.
We’ve had this unit for several months now and it’s been nothing but reliable. It easily lifts our larger SUVs and trucks, and the rolling jack is a nice bonus for versatility.
The safety locks are secure, the platform is stable, and customers are impressed. Easily one of the best investments for my business this year.
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I run a busy repair shop, and this Katool alignment lift has been a great addition. Smooth operation, reliable locking system, and it saves us tons of time on alignments.