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ACiQ 1.5 Ton 19 SEER2 Central Heat Pump System Inverter Extreme Heat R454B

By ACiQ | SKU: ACIQ-18-HPD ACIQ-18-AHD | ID: 089640
No Sales Tax - in most states excluding California
Manufacturer Warranty Included
Satisfaction Guarantee - or return within 30 Days
Most Products In Stock - Call or Text (833) 658-3387 for availability
$3,516.00 + FREE SHIPPING

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ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

ACiQ 1.5 Ton Inverter Heat Pump – Extreme Heat Series (Model ACiQ-18-HPD) Engineered for harsh climates, the ACiQ-18-HPD delivers 12,000–19,000 BTUs of efficient, adaptive heating and cooling—even in extreme cold down to -22°F. With advanced inverter technology, a smart learning condenser, and self-adjusting output, this unit ensures year-round comfort while reducing energy costs. Featuring R454B refrigerant and a durable gold fin coil, it's built for quiet, reliable performance in ducted applications.

ACiQ-18-HPD 1.5 Ton Extreme Series Central Inverter Heat Pump – Key Features

  • Extreme Heat Inverter Technology: Converts AC to DC and adjusts compressor speed based on demand, providing 12,000–18,000 BTU cooling and up to 19,000 BTU heating. Delivers 100% heating at 0°F and maintains 80% output down to -22°F—outperforming standard heat pumps in cold climates.

  • Smart Learning Condenser: Features advanced sensors that monitor air temperature, duct pressure, and refrigerant data. During startup, the unit enters a learning mode to continuously optimize performance and energy usage.

  • Adaptive Sizing for Balanced Comfort: Inverter-driven performance allows the unit to adapt like a smaller system during mild weather, preventing overcooling and excess humidity—ideal for homes sized for heating but needing cooling comfort in summer.

  • Cold Climate Ready – Extreme Series: Designed to efficiently heat even in subzero temperatures. Unlike traditional systems that rely heavily on costly electric backup heat, this unit minimizes electric heat usage and saves up to 75% on winter heating bills.

  • High-Efficiency Heating & Cooling: Provides full-range operation with efficient cooling from -22°F to 122°F and dependable heating from -22°F to 75°F—perfect for extreme climates with wide seasonal swings.

  • Eco-Friendly R454B Refrigerant: Uses low-GWP R454B refrigerant, ensuring compliance with modern environmental regulations and reducing your carbon footprint.

  • Gold Fin Condenser Coil Coating: Durable and corrosion-resistant coating protects against weather and extends the life of your system, especially in coastal or humid regions.

  • Quiet Operation, Even at Peak Load: Engineered for low-noise performance even under full system demand, maintaining indoor peace and comfort.

  • Ducted Heat Pump Design: Built for seamless integration into traditional ducted HVAC systems, offering a high-efficiency upgrade without the need for major installation changes.

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

ACiQ 1.5 Ton Central Ducted Air Handler – Multi-Position (Model ACiQ-18-AHD) The ACiQ-18-AHD is a high-efficiency 1.5-ton central air handler designed for seamless integration with your HVAC system. Featuring a variable speed DC blower and advanced communicating technology, this air handler works in tandem with your inverter condenser to dynamically adjust BTU output, optimizing comfort and energy savings. Its multi-positional design (upflow, downflow, or horizontal) offers flexible installation options to suit any space, while compatibility with R454B refrigerant ensures eco-friendly operation. The air handler efficiently distributes both heated and cooled air throughout your home by connecting easily to your existing ductwork.

ACiQ-18-AHD 1.5 Ton Air Handler – Key Features

  • Variable Speed DC Blower: The ACiQ-18-AHD Air Handler is equipped with a variable speed DC blower, allowing for precise airflow control and improved comfort. The adjustable blower speed ensures efficient operation, adapting to changing heating or cooling demands.

  • Communicating Technology for Enhanced Efficiency: The air handler features communicating technology, enabling seamless integration with your inverter condenser. This allows the system to self-adjust BTU output optimizing both comfort and energy efficiency based on real-time conditions.

  • Efficient Air Distribution: Designed for central ducted applications, the ACiQ-18-AHD efficiently distributes heated and cooled air throughout your home. It can be easily integrated with your existing ductwork for a smooth installation process and consistent, reliable air flow.

  • 18,000 BTU Capacity (1.5 Ton): With an 18,000 BTU (1.5 ton) capacity, this air handler is ideal for medium-sized residential spaces, providing ample heating and cooling for homes of varying sizes.

  • Multi-Positional Installation: The ACiQ-18-AHD offers flexible installation options with its multi-positional design. It can be installed in upflow, downflow, or horizontal left/right orientations, ensuring compatibility with different home layouts and space configurations.

  • 24V Thermostat Compatibility: This air handler is compatible with any 24V thermostat, providing you with the freedom to choose the best thermostat for your home’s temperature control needs.

  • R454B Refrigerant Compatibility: The ACiQ-18-AHD is compatible with the R454B refrigerant, a more energy-efficient and environmentally-friendly refrigerant option that helps reduce your carbon footprint.

Installation and Maintenance

Installing the ACiQ central ducted air handler is similar to replacing a standard air handler. A qualified technician will handle all necessary electrical, refrigerant, thermostat, and communication connections, and integrate the unit with your existing return and supply ductwork.

Designed for flexibility, this multi-positional air handler can be installed in upflow, downflow, or horizontal configurations. It’s compatible with any 24v thermostat that supports two-stage heating. For added comfort during colder months, optional supplemental electric heat kits are available as a backup heat source.

Routine maintenance is made simple with an intelligent control board that displays fault codes, helping quickly identify any issues within the system.

Please Note:
This air handler must be installed alongside a compatible condenser and other essential components, which may be sold separately if not included in your product bundle. If you intend to use straight electric heating, a compatible electric heat kit is required and available at an additional cost.


ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

Brand ACiQ SKU ACIQ-18-HPD
Refrigerant Charge 25' Weight (lbs) 109.130000
Brand/Manufacturer ACiQ Replaces ACIQ-18-HPB
Product Features Inverter, Low Ambient Heating, Two Stage Condenser, Variable Speed Condenser
HSPF2 9.7 Cooling BTU 18,000 BTU
Heating BTU 19,000 BTU Maximum CFM 618
Decibel Level (dBA) 59 Electric Heat Heat Pump
Refrigerant R454B SEER2 (Efficiency) 19
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 20 Amps
Min. Breaker Size 17 Amps Tonnage 1.5 Ton
BTU/Tonnage 18,000 BTU/1.5 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 26.5" Width 35"
Depth 13.5" Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

Brand ACiQ SKU ACIQ-18-AHD
Weight 83.770000 Manufacturer ACiQ
Replaces ACIQ-18-AHB Cooling BTU 18,000 BTU
Maximum CFM 618 Decibel Level (dBA) Up to 44 Decibels
Electric Backup Heat Capabilities (Optional) 5 Kilowatts, 10 Kilowatts
Configuration Multi-Positional Refrigerant R454B
Liquid Line 3/8" Suction Line 3/4"
Electrical 208/230V 1 Phase 60 Hz Max Breaker Size 15 Amps
Min. Breaker Size 5.5 Amps / 4.0 Amps Tonnage 1.5 Ton
BTU/Tonnage 18,000 BTU/1.5 Ton Mini Split Type Multi-Positional
Zone Compatibility Single Zone Connection Flared
Height 45" Width 17.5"
Depth 21" Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

Warranty Type Parts Compressor
Standard Warranty 5 year parts 7 year parts
Registered Warranty 7 year parts 12 year parts

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

Warranty Type Parts Compressor
Standard Warranty 5 year parts 7 year parts
Registered Warranty 7 year parts 12 year parts

ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

HPD Installation Manual

HPD Service Manual

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

AHD Installation Manual

AHD Owner's Manual

1.5 Ton HPD / AHD Submittal

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

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very reliable company and great prices

Bought a few units from this company and they were very friendly and easy to work with. Either matched prices or beat the price and had fast shipping also.

Excellent company to purchase from

I wasn’t to sure about if this company could deliver it quickly but it arrived within a week. No issues. I needed this one for parts as my first one that I installed a year ago had the ecm go out on the blower fan. Parts are hard to come by for this Chinese brand. I think the ecm went out due to condensation in the main supply plenum dripping onto fan motor. I do like this ac unit but hope the fan lasts longer than a year. I covered the fan ecm with flex seal tape.

Goodman 5 Ton System

Excellent value, customer sales support (a human called to confirm online order... greatly appreciated!), fast shipping. Very happy customer.

A + Company

Great price, communication and service I will be buying another furnace from them Fantastic !

Sale representative Lopez was very experienced and professional. I would recommend this company to any one and I am looking forward to work with Lopez again.


ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

ACiQ 1.5 Ton Inverter Heat Pump – Extreme Heat Series (Model ACiQ-18-HPD) Engineered for harsh climates, the ACiQ-18-HPD delivers 12,000–19,000 BTUs of efficient, adaptive heating and cooling—even in extreme cold down to -22°F. With advanced inverter technology, a smart learning condenser, and self-adjusting output, this unit ensures year-round comfort while reducing energy costs. Featuring R454B refrigerant and a durable gold fin coil, it's built for quiet, reliable performance in ducted applications.

ACiQ-18-HPD 1.5 Ton Extreme Series Central Inverter Heat Pump – Key Features

  • Extreme Heat Inverter Technology: Converts AC to DC and adjusts compressor speed based on demand, providing 12,000–18,000 BTU cooling and up to 19,000 BTU heating. Delivers 100% heating at 0°F and maintains 80% output down to -22°F—outperforming standard heat pumps in cold climates.

  • Smart Learning Condenser: Features advanced sensors that monitor air temperature, duct pressure, and refrigerant data. During startup, the unit enters a learning mode to continuously optimize performance and energy usage.

  • Adaptive Sizing for Balanced Comfort: Inverter-driven performance allows the unit to adapt like a smaller system during mild weather, preventing overcooling and excess humidity—ideal for homes sized for heating but needing cooling comfort in summer.

  • Cold Climate Ready – Extreme Series: Designed to efficiently heat even in subzero temperatures. Unlike traditional systems that rely heavily on costly electric backup heat, this unit minimizes electric heat usage and saves up to 75% on winter heating bills.

  • High-Efficiency Heating & Cooling: Provides full-range operation with efficient cooling from -22°F to 122°F and dependable heating from -22°F to 75°F—perfect for extreme climates with wide seasonal swings.

  • Eco-Friendly R454B Refrigerant: Uses low-GWP R454B refrigerant, ensuring compliance with modern environmental regulations and reducing your carbon footprint.

  • Gold Fin Condenser Coil Coating: Durable and corrosion-resistant coating protects against weather and extends the life of your system, especially in coastal or humid regions.

  • Quiet Operation, Even at Peak Load: Engineered for low-noise performance even under full system demand, maintaining indoor peace and comfort.

  • Ducted Heat Pump Design: Built for seamless integration into traditional ducted HVAC systems, offering a high-efficiency upgrade without the need for major installation changes.

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

ACiQ 1.5 Ton Central Ducted Air Handler – Multi-Position (Model ACiQ-18-AHD) The ACiQ-18-AHD is a high-efficiency 1.5-ton central air handler designed for seamless integration with your HVAC system. Featuring a variable speed DC blower and advanced communicating technology, this air handler works in tandem with your inverter condenser to dynamically adjust BTU output, optimizing comfort and energy savings. Its multi-positional design (upflow, downflow, or horizontal) offers flexible installation options to suit any space, while compatibility with R454B refrigerant ensures eco-friendly operation. The air handler efficiently distributes both heated and cooled air throughout your home by connecting easily to your existing ductwork.

ACiQ-18-AHD 1.5 Ton Air Handler – Key Features

  • Variable Speed DC Blower: The ACiQ-18-AHD Air Handler is equipped with a variable speed DC blower, allowing for precise airflow control and improved comfort. The adjustable blower speed ensures efficient operation, adapting to changing heating or cooling demands.

  • Communicating Technology for Enhanced Efficiency: The air handler features communicating technology, enabling seamless integration with your inverter condenser. This allows the system to self-adjust BTU output optimizing both comfort and energy efficiency based on real-time conditions.

  • Efficient Air Distribution: Designed for central ducted applications, the ACiQ-18-AHD efficiently distributes heated and cooled air throughout your home. It can be easily integrated with your existing ductwork for a smooth installation process and consistent, reliable air flow.

  • 18,000 BTU Capacity (1.5 Ton): With an 18,000 BTU (1.5 ton) capacity, this air handler is ideal for medium-sized residential spaces, providing ample heating and cooling for homes of varying sizes.

  • Multi-Positional Installation: The ACiQ-18-AHD offers flexible installation options with its multi-positional design. It can be installed in upflow, downflow, or horizontal left/right orientations, ensuring compatibility with different home layouts and space configurations.

  • 24V Thermostat Compatibility: This air handler is compatible with any 24V thermostat, providing you with the freedom to choose the best thermostat for your home’s temperature control needs.

  • R454B Refrigerant Compatibility: The ACiQ-18-AHD is compatible with the R454B refrigerant, a more energy-efficient and environmentally-friendly refrigerant option that helps reduce your carbon footprint.

Installation and Maintenance

Installing the ACiQ central ducted air handler is similar to replacing a standard air handler. A qualified technician will handle all necessary electrical, refrigerant, thermostat, and communication connections, and integrate the unit with your existing return and supply ductwork.

Designed for flexibility, this multi-positional air handler can be installed in upflow, downflow, or horizontal configurations. It’s compatible with any 24v thermostat that supports two-stage heating. For added comfort during colder months, optional supplemental electric heat kits are available as a backup heat source.

Routine maintenance is made simple with an intelligent control board that displays fault codes, helping quickly identify any issues within the system.

Please Note:
This air handler must be installed alongside a compatible condenser and other essential components, which may be sold separately if not included in your product bundle. If you intend to use straight electric heating, a compatible electric heat kit is required and available at an additional cost.


ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

Brand ACiQ SKU ACIQ-18-HPD
Refrigerant Charge 25' Weight (lbs) 109.130000
Brand/Manufacturer ACiQ Replaces ACIQ-18-HPB
Product Features Inverter, Low Ambient Heating, Two Stage Condenser, Variable Speed Condenser
HSPF2 9.7 Cooling BTU 18,000 BTU
Heating BTU 19,000 BTU Maximum CFM 618
Decibel Level (dBA) 59 Electric Heat Heat Pump
Refrigerant R454B SEER2 (Efficiency) 19
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 20 Amps
Min. Breaker Size 17 Amps Tonnage 1.5 Ton
BTU/Tonnage 18,000 BTU/1.5 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 26.5" Width 35"
Depth 13.5" Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

Brand ACiQ SKU ACIQ-18-AHD
Weight 83.770000 Manufacturer ACiQ
Replaces ACIQ-18-AHB Cooling BTU 18,000 BTU
Maximum CFM 618 Decibel Level (dBA) Up to 44 Decibels
Electric Backup Heat Capabilities (Optional) 5 Kilowatts, 10 Kilowatts
Configuration Multi-Positional Refrigerant R454B
Liquid Line 3/8" Suction Line 3/4"
Electrical 208/230V 1 Phase 60 Hz Max Breaker Size 15 Amps
Min. Breaker Size 5.5 Amps / 4.0 Amps Tonnage 1.5 Ton
BTU/Tonnage 18,000 BTU/1.5 Ton Mini Split Type Multi-Positional
Zone Compatibility Single Zone Connection Flared
Height 45" Width 17.5"
Depth 21" Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

Warranty Type Parts Compressor
Standard Warranty 5 year parts 7 year parts
Registered Warranty 7 year parts 12 year parts

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

Warranty Type Parts Compressor
Standard Warranty 5 year parts 7 year parts
Registered Warranty 7 year parts 12 year parts

ACiQ 1.5 Ton 19 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-18-HPD

HPD Installation Manual

HPD Service Manual

ACiQ 1.5 Ton Central Ducted Air Handler Multi-Position 17.5" Cabinet R454B ACIQ-18-AHD

AHD Installation Manual

AHD Owner's Manual

1.5 Ton HPD / AHD Submittal

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

Customer Reviews

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