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ACIQ 4 Ton 17.5 SEER2 Inverter Heat Pump System Extreme+ Series R454B

By ACiQ | SKU: ACIQ-48-HPD ACIQ-48-PAH | ID: 089631
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
$5,520.00 + FREE SHIPPING

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ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

ACiQ 4 Ton Inverter Heat Pump – Extreme Heat Series (Model ACiQ-48-HPD) The ACiQ-48-HPD is a high-performance 4-ton inverter heat pump designed to deliver efficient heating and cooling in extreme weather conditions. Featuring inverter technology, it adapts its BTU output based on demand, ensuring optimal comfort. With its Extreme Heat Technology, it can operate effectively down to -22°F saving you up to 75% on heating costs compared to traditional systems. Equipped with a smart learning condenser, this unit automatically adjusts to environmental conditions, providing maximum energy savings. Its durable gold fin coating and R454B refrigerant make it both eco-friendly and long-lasting.

ACiQ-48-HPD 4 Ton Extreme Series Central Inverter Heat Pump – Key Features

  • Inverter-Driven Performance: Uses inverter technology to convert AC power to DC, allowing the compressor to adjust its speed. This enables the heat pump to dynamically adjust its BTU output, ranging from 12,000–48,000 BTU for cooling and 12,000–50,000 BTU for heating. This self-adjusting system ensures optimal efficiency, regardless of outdoor weather conditions.

  • Smart Learning Condenser: Equipped with cutting-edge sensors, the condenser monitors various conditions, including indoor and outdoor air temperature, refrigerant temperature, duct pressure, and overall system performance. During the initial startup, the unit enters a learning mode that fine-tunes future operations, ensuring maximum energy efficiency and consistent performance.

  • Adaptive Sizing for Custom Comfort: The ACiQ-48-HPD automatically adjusts its size to meet your heating and cooling needs. Traditional heat pumps can result in discomfort when oversized for cooling, but this system adapts to avoid excess humidity and provide ideal cooling performance in the summer months without compromising efficiency.

  • Extreme Heat Technology for Cold Climates: Designed to handle extreme temperatures, the ACiQ-48-HPD can effectively heat spaces down to -22°F without relying heavily on backup electric heat. The heat pump provides 100% heating at 0°F and still offers 80% performance at -22°F, saving up to 75% on winter heating costs compared to traditional systems.

  • Wide Temperature Range: This inverter-driven heat pump offers efficient cooling from -22°F to 122°F and reliable heating from -22°F to 75°F. Whether you're facing intense heat or freezing cold, the ACiQ-48-HPD provides consistent and reliable performance year-round.

  • Sustainable R454B Refrigerant: Incorporates R454B refrigerant, a low global warming potential (GWP) alternative to older refrigerants, making this system an eco-friendly option for environmentally conscious consumers.

  • Gold Fin Condenser Coil Protection: The durable gold fin coating on the condenser coils increases the system's resistance to corrosion, ensuring long-lasting durability and improved performance, especially in coastal or humid environments.

  • Whisper-Quiet Operation: The ACiQ-48-HPD is engineered for quiet operation, even under heavy workloads. This makes it an excellent choice for homes and businesses where noise reduction is a key consideration.

  • Perfect for Ducted Applications: This system is designed for ducted applications, easily integrating with existing ductwork for seamless installation in both residential and commercial spaces.

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

The ACiQ-48-PAH Extreme+ is a high-efficiency 4-ton ducted air handler built for superior performance in any climate. Featuring a variable speed DC blower and advanced communicating technology, it works with your thermostat and inverter condenser to automatically adjust BTU output for maximum comfort and energy savings. Its slim-fit, multi-positional design allows for flexible installation, and compatibility with R454B refrigerant makes it a future-ready solution. Perfect for homeowners seeking high performance, easy installation and potential tax credit eligibility.

ACiQ-48-PAH Extreme+ 4 Ton Ducted Air Handler – Product Features

  • 4 Ton High-Efficiency Capacity – Delivers powerful central heating and cooling performance, ideal for larger homes and light commercial spaces.

  • Extreme+ Performance Technology – Equipped with advanced communicating capabilities, allowing the thermostat and inverter condenser to automatically optimize BTU output for maximum efficiency and comfort.

  • Variable Speed DC Blower Motor – Ensures quiet operation, enhanced indoor air quality, and superior energy efficiency by adjusting airflow based on demand.

  • Flexible Multi-Positional Design – Can be installed in upflow, downflow, or horizontal left/right configurations, offering installation flexibility to match any layout.

  • Slim-Fit Cabinet for Tight SpacesCompact design makes it easier to install in closets, attics, or narrow mechanical rooms.

  • Compatible with Any 24V Thermostat – Offers broad thermostat compatibility for easy integration with new or existing HVAC control systems.

  • Eco-Friendly Refrigerant Ready – Supports R454B refrigerant, a low-GWP, environmentally friendly option that meets future HVAC industry standards.

  • Rebate & Tax Credit Eligible – High-efficiency performance helps qualify for energy rebate programs and federal tax incentives, adding long-term savings potential.

Installation and Maintenance
The installation process for the ACiQ Extreme+ central ducted air handler is similar to that of other replacement air handlers. Your technician will handle electrical, refrigerant, thermostat, and communication connections, as well as link the air handler to the return and supply ductwork. This air handler is multi-positional (upflow, downflow, or horizontal) and features a narrower cabinet design, offering greater versatility and easier installation compared to other models. It is compatible with any 24v thermostat that supports two stages of heating. For colder days, supplemental electric heat kits are available as a backup heat source.

If maintenance is needed, the air handler’s intelligent control board will display fault codes to help diagnose any issues with the system.

Important Note: For proper function, the air handler must be installed with a condenser and other required installation equipment, which may incur additional costs if not included in the product bundle. Additionally, an electric heat kit is required for straight electric heating and is also available at an extra cost.


ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

Brand ACiQ SKU ACiQ-48-HPD
Refrigerant Charge 25' Weight (in lbs) 232.360000
Brand/Manufacturer ACiQ Replaces ACiQ-48-HPB
Product Features Inverter, Low Ambient Heating, Two Stage Condenser, Variable Speed Condenser
HSPF2 9.5 Cooling BTU 47,000 BTU
Heating BTU 50,000 BTU Maximum CFM 1601
Decibel Level (dBA) 65 Electric Heat Heat Pump
Refrigerant R454B SEER2 (Efficiency) 17.5
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 4 Ton
BTU/Tonnage 48,000 BTU / 4 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

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

Brand ACiQ SKU ACiQ-48-PAH
Weight (in lbs) 186.51 Cooling BTU 48,000 BTU
Maximum CFM 1601 Decibel Level (dBA) Up to 53 Decibels
Electric Backup Heat Capabilities (Optional) 5 Kilowatts, 8 Kilowatts, 10 Kilowatts, 15 Kilowatts, 20 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 14.5 / 10.0 Amps
Tonnage 4 Ton BTU/Tonnage 48,000 BTU/4 Ton
Mini Split Type Multi-Positional Zone Compatibility Single Zone
Connection Flared Height 56"
Width 24.5" Depth 21.5"
Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

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

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

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

ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

HPD Installation Manual

HPD Service Manual

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

PAH Installation Manual

PAH Owner's Manual

4 Ton HPD / PAH 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 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

ACiQ 4 Ton Inverter Heat Pump – Extreme Heat Series (Model ACiQ-48-HPD) The ACiQ-48-HPD is a high-performance 4-ton inverter heat pump designed to deliver efficient heating and cooling in extreme weather conditions. Featuring inverter technology, it adapts its BTU output based on demand, ensuring optimal comfort. With its Extreme Heat Technology, it can operate effectively down to -22°F saving you up to 75% on heating costs compared to traditional systems. Equipped with a smart learning condenser, this unit automatically adjusts to environmental conditions, providing maximum energy savings. Its durable gold fin coating and R454B refrigerant make it both eco-friendly and long-lasting.

ACiQ-48-HPD 4 Ton Extreme Series Central Inverter Heat Pump – Key Features

  • Inverter-Driven Performance: Uses inverter technology to convert AC power to DC, allowing the compressor to adjust its speed. This enables the heat pump to dynamically adjust its BTU output, ranging from 12,000–48,000 BTU for cooling and 12,000–50,000 BTU for heating. This self-adjusting system ensures optimal efficiency, regardless of outdoor weather conditions.

  • Smart Learning Condenser: Equipped with cutting-edge sensors, the condenser monitors various conditions, including indoor and outdoor air temperature, refrigerant temperature, duct pressure, and overall system performance. During the initial startup, the unit enters a learning mode that fine-tunes future operations, ensuring maximum energy efficiency and consistent performance.

  • Adaptive Sizing for Custom Comfort: The ACiQ-48-HPD automatically adjusts its size to meet your heating and cooling needs. Traditional heat pumps can result in discomfort when oversized for cooling, but this system adapts to avoid excess humidity and provide ideal cooling performance in the summer months without compromising efficiency.

  • Extreme Heat Technology for Cold Climates: Designed to handle extreme temperatures, the ACiQ-48-HPD can effectively heat spaces down to -22°F without relying heavily on backup electric heat. The heat pump provides 100% heating at 0°F and still offers 80% performance at -22°F, saving up to 75% on winter heating costs compared to traditional systems.

  • Wide Temperature Range: This inverter-driven heat pump offers efficient cooling from -22°F to 122°F and reliable heating from -22°F to 75°F. Whether you're facing intense heat or freezing cold, the ACiQ-48-HPD provides consistent and reliable performance year-round.

  • Sustainable R454B Refrigerant: Incorporates R454B refrigerant, a low global warming potential (GWP) alternative to older refrigerants, making this system an eco-friendly option for environmentally conscious consumers.

  • Gold Fin Condenser Coil Protection: The durable gold fin coating on the condenser coils increases the system's resistance to corrosion, ensuring long-lasting durability and improved performance, especially in coastal or humid environments.

  • Whisper-Quiet Operation: The ACiQ-48-HPD is engineered for quiet operation, even under heavy workloads. This makes it an excellent choice for homes and businesses where noise reduction is a key consideration.

  • Perfect for Ducted Applications: This system is designed for ducted applications, easily integrating with existing ductwork for seamless installation in both residential and commercial spaces.

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

The ACiQ-48-PAH Extreme+ is a high-efficiency 4-ton ducted air handler built for superior performance in any climate. Featuring a variable speed DC blower and advanced communicating technology, it works with your thermostat and inverter condenser to automatically adjust BTU output for maximum comfort and energy savings. Its slim-fit, multi-positional design allows for flexible installation, and compatibility with R454B refrigerant makes it a future-ready solution. Perfect for homeowners seeking high performance, easy installation and potential tax credit eligibility.

ACiQ-48-PAH Extreme+ 4 Ton Ducted Air Handler – Product Features

  • 4 Ton High-Efficiency Capacity – Delivers powerful central heating and cooling performance, ideal for larger homes and light commercial spaces.

  • Extreme+ Performance Technology – Equipped with advanced communicating capabilities, allowing the thermostat and inverter condenser to automatically optimize BTU output for maximum efficiency and comfort.

  • Variable Speed DC Blower Motor – Ensures quiet operation, enhanced indoor air quality, and superior energy efficiency by adjusting airflow based on demand.

  • Flexible Multi-Positional Design – Can be installed in upflow, downflow, or horizontal left/right configurations, offering installation flexibility to match any layout.

  • Slim-Fit Cabinet for Tight SpacesCompact design makes it easier to install in closets, attics, or narrow mechanical rooms.

  • Compatible with Any 24V Thermostat – Offers broad thermostat compatibility for easy integration with new or existing HVAC control systems.

  • Eco-Friendly Refrigerant Ready – Supports R454B refrigerant, a low-GWP, environmentally friendly option that meets future HVAC industry standards.

  • Rebate & Tax Credit Eligible – High-efficiency performance helps qualify for energy rebate programs and federal tax incentives, adding long-term savings potential.

Installation and Maintenance
The installation process for the ACiQ Extreme+ central ducted air handler is similar to that of other replacement air handlers. Your technician will handle electrical, refrigerant, thermostat, and communication connections, as well as link the air handler to the return and supply ductwork. This air handler is multi-positional (upflow, downflow, or horizontal) and features a narrower cabinet design, offering greater versatility and easier installation compared to other models. It is compatible with any 24v thermostat that supports two stages of heating. For colder days, supplemental electric heat kits are available as a backup heat source.

If maintenance is needed, the air handler’s intelligent control board will display fault codes to help diagnose any issues with the system.

Important Note: For proper function, the air handler must be installed with a condenser and other required installation equipment, which may incur additional costs if not included in the product bundle. Additionally, an electric heat kit is required for straight electric heating and is also available at an extra cost.


ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

Brand ACiQ SKU ACiQ-48-HPD
Refrigerant Charge 25' Weight (in lbs) 232.360000
Brand/Manufacturer ACiQ Replaces ACiQ-48-HPB
Product Features Inverter, Low Ambient Heating, Two Stage Condenser, Variable Speed Condenser
HSPF2 9.5 Cooling BTU 47,000 BTU
Heating BTU 50,000 BTU Maximum CFM 1601
Decibel Level (dBA) 65 Electric Heat Heat Pump
Refrigerant R454B SEER2 (Efficiency) 17.5
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 4 Ton
BTU/Tonnage 48,000 BTU / 4 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

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

Brand ACiQ SKU ACiQ-48-PAH
Weight (in lbs) 186.51 Cooling BTU 48,000 BTU
Maximum CFM 1601 Decibel Level (dBA) Up to 53 Decibels
Electric Backup Heat Capabilities (Optional) 5 Kilowatts, 8 Kilowatts, 10 Kilowatts, 15 Kilowatts, 20 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 14.5 / 10.0 Amps
Tonnage 4 Ton BTU/Tonnage 48,000 BTU/4 Ton
Mini Split Type Multi-Positional Zone Compatibility Single Zone
Connection Flared Height 56"
Width 24.5" Depth 21.5"
Warranty 12 Years Compressor and 7 Years Parts with Online Registration

ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

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

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

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

ACiQ 4 Ton 17.5 SEER2 Central Heat Pump Inverter Extreme Heat Series R454B ACIQ-48-HPD

HPD Installation Manual

HPD Service Manual

ACiQ 4 Ton Extreme+ Ducted Air Handler Multi-Position 21.5" Cabinet R454B ACIQ-48-PAH

PAH Installation Manual

PAH Owner's Manual

4 Ton HPD / PAH 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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