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18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V

18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V – 37MPRAQ18AA3 / 45MPHAQ18XA3
18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V – 37MPRAQ18AA3 / 45MPHAQ18XA3 37MPRAQ18AA3 45MPHAQ18XA3 KSAIC0501230 KSAIF0701AAA KSACN1201AAA KSACN1401AAA 87762 EL1838-3 87762 / EL1838-3 87762 / EL1838-3 87762 / EL1838-3 MSK001 201814 366400 216741 366401 366402 230-B2L 230-B2L

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By

Carrier

In stock

Model

37MPRAQ18AA3 / 45MPHAQ18XA3

ID

213410

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Customize 18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V
18,000 BTU Carrier Single Zone Condenser - R454B
18,000 BTU Carrier Single Zone Condenser - R454B
18,000 BTU Carrier Single Zone Condenser - R454B   + $3,600.00
18,000 BTU Carrier Infinity Single Zone Mini Split Air Handler - R454B
18,000 BTU Carrier Infinity Single Zone Mini Split Air Handler - R454B
18,000 BTU Carrier Infinity Single Zone Mini Split Air Handler - R454B   + $1,550.00
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet
Equipment Pad
Installation Kit for Condensers
Carrier Wired Programmable Remote Thermostat
18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V – 37MPRAQ18AA3 / 45MPHAQ18XA3

$5,150.00

18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System - R454B | 230V

The 37MPRAQ18AA3 / 45MPHAQ18XA3 is a Carrier Infinity Series Mini-Split Heat Pump with built-in heaters, providing high-efficiency single-zone heating and cooling. Perfect for larger rooms or small apartments that require reliable comfort without ductwork.

Product Overview

  • Cooling Capacity: 18,000 BTU
  • Heating Capacity: 18,000 BTU
  • SEER2: Up to 25.8
  • Refrigerant: R454B

Key Features

  • Low Sound Levels: Quiet operation ensures comfort without noise disruption.
  • Durability: Heavy-gauge construction with anti-corrosive fin coating.
  • Built-in Heaters: Basepan and crankcase heaters improve performance in cold climates.
  • Self-Diagnostics: Error codes and diagnostic indicators simplify maintenance.
  • Fast Installation: Ductless design eliminates the need for ductwork, ensuring quick installation.

Warranty

Upon timely registration, eligible equipment may receive a 10-year limited parts warranty.

18,000 BTU Carrier Infinity Single Zone Mini Split Heat Pump Condenser - R454B | 230V

18,000 BTU Carrier Infinity Single Zone Mini Split Heat Pump Condenser - R454B | 230V

The 37MPRAQ18AA3 provides powerful, high-efficiency heating and cooling for larger rooms or open spaces. Engineered for reliability, it maintains comfort even in extreme climates while keeping energy use low.

Product Overview

  • Cooling Capacity: 18,000 BTU
  • Heating Capacity: 18,000 BTU
  • SEER2: Up to 28.0
  • Refrigerant: R454B

Key Features

  • Quiet Comfort: Low sound operation ideal for living areas.
  • Rugged Build: Galvanized steel construction with anti-corrosive treatment.
  • Winter Ready: Built-in basepan and crankcase heaters for cold weather performance.
  • Diagnostic System: LED error codes improve serviceability.
  • Fast Setup: Ductless installation minimizes disruption.

Warranty

Backed by a 10-year limited parts warranty upon registration.

18,000 BTU Carrier Infinity Single Zone or Multi Zone Wall Mount Mini Split Air Handler - R454B | 230V

18,000 BTU Carrier Infinity Single Zone or Multi Zone Wall Mount Mini Split Air Handler - R454B | 230V

The 45MPHAQ18XA3 is a powerful indoor unit built to deliver reliable comfort in larger rooms or open living areas. With efficient airflow, quiet operation, and multi-zone compatibility, it ensures consistent heating and cooling year-round.

Product Overview

  • Cooling Capacity: 18,000 BTU
  • Heating Capacity: 18,000 BTU
  • Refrigerant: R454B
  • Application: Compatible with single-zone or multi-zone Carrier Infinity outdoor units

Key Features

  • Powerful Performance: Ideal for larger spaces or open layouts.
  • Low Sound Levels: Maintains comfort without unwanted noise.
  • Sturdy Construction: Built with long-lasting, high-quality components.
  • Even Comfort: Ensures consistent airflow throughout the area.
  • Flexible Installation: Works in both single and multi-zone Carrier Infinity systems.

Warranty

Backed by a 10-year limited parts warranty upon registration.

Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 15 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 30 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 50 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 25 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 35 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
E Lite Equipment Pad 18" x 38" x 3"

E Liteis a plastic pad designed as a mounting base for air conditioning condensers. The rugged design provides uniform and generous ribbing for optimum, self-leveling ground support without inserts. E Lite is injection molded from polypropylene, resulting in a pad that is lightweight, but not too light. A subtle texture prevents unit slide and presents a classic appearance, which is enhanced by rounded edges and a concrete gray color. Each pad is molded with its size in raised letters.

  • High recycled plastic content
  • Subtle texture resists unit slide
  • Unaffected by UV or weather
  • Uniform ribbing transfers load evenly
  • Drillable for securing unit
  • Lightweight, yet rugged

No Return Policy

All sales of this product are final and are non-refundable.

Wall Mount Bracket for Mini Split Systems

This wall mount bracket is perfect for outdoor mini split condensers. The length of the the wall bracket arms are 21" long. The condensing unit is mounted onto the L-shaped brackets and fastened using the bolts and anti-vibration washers provided.

Features:

  • 21" Arm Length
  • Weight capacity of 220 lbs per arm
  • Bolts and anti-vibration washers included

No Return Policy

All sales of this product are final and are non-refundable.

Condenser Risers - 4" x 18" - 2 Pack

Provides simple and secure mounting for small and large piping systems, ductwork runs, cable trays and smaller equipment such as condensers. Linear track offers adjustable mounting. Manufactured from exterior grade materials.

Features

  • Ideal for piping, duct runs, cable trays and condensers
  • Weather resistant PVC
  • Linear track holds 3/8" hex head bolts
  • Two 7/8" long bolts included
  • Weighs up to 397 Ib
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"

E Lite Condenser Pad and Risers

E Lite Condenser Pad

E Lite Condenser Pad is designed to provide solid support for air conditioning condensers. It's made from sturdy polypropylene, striking a balance between lightness and stability. Its robust design ensures a level ground without the need for extra components.

Key Features:

  • Reliable Support: Abundance of ridges for stable ground support.
  • Durable and Lightweight: Tough yet not excessively heavy, thanks to polypropylene construction.
  • Anti-Slip: The surface prevents slipping, and rounded edges enhance safety.
  • Simple Appearance: Gray color with size labels.
  • Versatile Use: Suitable for condensers, pipes, ducts, cables, and more.

E Lite Risers

E Lite Risers complement the Condenser Pad, allowing you to adjust your setup as needed. They are constructed from weather-resistant PVC for outdoor use.

Key Features:

  • Weather Resistance: Made from tough PVC for long-lasting performance.
  • Secure Setup: The track securely holds bolts in place.
  • Bolts Included: Each set comes with two bolts.
  • Strong Support: Capable of handling loads of up to 397 pounds.

E Lite Condenser Pad and Risers offer reliable support without any complications. They are built to last and deliver efficient performance. Consider E Lite for your support needs – it's a practical solution for your projects.

No Return Policy

All sales of this product are final and are non-refundable.

Installation Kit for Condensers - Accessory Set

Ensure a professional and secure installation for your condenser with this comprehensive installation kit. Designed to provide all the essential components needed for a smooth setup, this kit helps protect your system while ensuring proper electrical and refrigerant connections.

Key Features:

✔ All-in-One Kit: Includes key accessories for a professional-grade installation.
✔ Enhanced System Protection: Features a surge protector and disconnect safety switch for added safety.
✔ Reliable Electrical Connections: Comes with a whip and charging adapter to ensure proper power supply.
✔ Secure Wall Penetration: Telescoping wall sleeve protects and stabilizes refrigerant and electrical lines.
✔ HVAC Professional Recommended: Ideal for new installations and system replacements.

What’s Included:

  • 1/2" x 6' Electrical Whip – SKU: 84136
  • 60A Non-Fused Disconnect – SKU: 83335
  • Surge Protector – SKU: ICM517
  • CPS Charging Adapter – SKU: 87-AD87
  • Telescoping Wall Sleeve – SKU: NFP-75

Equip your condenser with everything needed for a safe, durable, and professional installation. Order your Condenser Installation Kit today!

Carrier Wired Programmable Remote Thermostat

Carrier KSACN1401AAA Wired Programmable Remote - R454B

Designed for Carrier and compatible ductless HVAC systems, including Comfortmaker, Midea, and Tempstar, the KSACN1401AAA offers precise control with a user-friendly interface. Features include:

  • 7-day programmable scheduling
  • LCD display with room temperature monitoring
  • Child lock and malfunction code display
  • Infrared sensor for temperature sensing
  • 4-way wire layout design for easy installation

Dimensions: 4.72 in. x 4.72 in. x 0.81 in. (120 x 120 x 20.6 mm). Back plate: 4.57 in. x 4.57 in. (116 x 116 mm).

Compatible with R454B refrigerant systems. Ideal for residential and light commercial applications.

Carrier Wired Programmable Remote

Carrier KSACN1201AAA Wired Programmable Remote - R454B

Designed for Carrier and compatible ductless HVAC systems, including Comfortmaker, Midea, and Tempstar, the KSACN1201AAA offers precise control with a user-friendly interface. Features include:

  • 7-day programmable scheduling
  • LCD display with room temperature monitoring
  • Child lock and malfunction code display
  • Infrared sensor for temperature sensing
  • 4-way wire layout design for easy installation

Dimensions: 4.72 in. x 4.72 in. x 0.81 in. (120 x 120 x 20.6 mm). Back plate: 4.57 in. x 4.57 in. (116 x 116 mm).

Compatible with R454B refrigerant systems. Ideal for residential and light commercial applications.

Carrier Wi-Fi Interface Kit

Carrier KSAIF0701AAA Wi-Fi Interface Kit

Designed for Carrier and compatible ductless HVAC systems, including Comfortmaker, Midea, and Tempstar, the KSAIF0701AAA enables remote control of your system via Wi-Fi with an easy-to-use interface. Features include:

  • Wi-Fi connectivity for remote control using Carrier CliMate app
  • Plug-and-play installation with indoor unit control board
  • Supports highwall, cassette, and console units
  • Over-the-air firmware updates
  • Secure and reliable wireless communication

Dimensions: 3.9 in. x 2.3 in. x 1.1 in. (99 x 58 x 28 mm)

Compatible with various Carrier ductless HVAC systems. Ideal for residential and light commercial applications.

Carrier 24V Interface Kit

Carrier KSAIF0701AAA Wi-Fi Interface Kit - R454B

Designed for Carrier and compatible ductless HVAC systems, including Comfortmaker, Midea, and Tempstar, the KSAIF0701AAA enables remote control of your system via Wi-Fi with an easy-to-use interface. Features include:

  • Wi-Fi connectivity for remote control using Carrier CliMate app
  • Plug-and-play installation with indoor unit control board
  • Supports highwall, cassette, and console units
  • Over-the-air firmware updates
  • Secure and reliable wireless communication

Dimensions: 3.9 in. x 2.3 in. x 1.1 in. (99 x 58 x 28 mm)

Compatible with various Carrier ductless HVAC systems. Ideal for residential and light commercial applications.

More Information
18,000 BTU Carrier Infinity Single Zone Mini Split Heat Pump Condenser - R454B | 230V
SKU37MPRAQ18AA3
Weight130.290000
AHRI Certificate Number215413144
ManufacturerCarrier
HSPF216.2
Cooling BTU18000
Heating BTU20000
Maximum CFM2235.29
Decibel Level (dBA)61.5
RefrigerantR454B
SEER225.8
Liquid Line3/8in
Suction Line5/8in
Electrical208-230V | 60 HZ | 1 Phase
Max Breaker Size25A
BTU/Tonnage18,000 BTU/1.5 Ton
Zone CompatibilitySingle Zone
Height34.84"
Width37.24"
Depth16.14"
WarrantyResidential Warranty: 10 Year Limited on Parts with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
18,000 BTU Carrier Infinity Single Zone or Multi Zone Wall Mount Mini Split Air Handler - R454B | 230V
SKU45MPHAQ18XA3
Weight43.650000
ManufacturerCarrier
HSPF216.2
Cooling BTU18000
Heating BTU20000
Maximum CFM 317.8 - 812.3
Decibel Level (dBA)16 - 43.5
RefrigerantR454B
SEER225.8
Liquid Line3/8in
Suction Line5/8in
Electrical208-230V | 60 HZ | 1 Phase
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilitySingle Zone
Height13.98"
Width48.43"
Depth10.83"
WarrantyResidential Warranty: 10 Year Limited on Parts with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet
SKU201814
Weight15.000000
ManufacturerOnline Supply
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet
SKU216741
Weight30.000000
ManufacturerOnline Supply
Length30'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet
SKU366402
Weight45.000000
ManufacturerOnline Supply
Length50'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet
SKU366400
Weight25.000000
ManufacturerOnline Supply
Length25'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet
SKU366401
Weight35.000000
ManufacturerOnline Supply
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad 18" x 38" x 3"
SKUEL1838-3
Weight16.000000
ManufacturerOnline Supply
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Wall Mount Bracket for Mini Split Systems
SKU230-B2L
Weight9.200000
ManufacturerOnline Supply
Length40"
Height3"
Width6"
Safety InformationPROPOSITION 65 WARNING
Condenser Risers - 4" x 18" - 2 Pack
SKU87762
Weight5.000000
ManufacturerOnline Supply
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
SKU87762 / EL1838-3
Weight25.000000
ManufacturerOnline Supply
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Installation Kit for Condensers - Accessory Set
SKUMSK001
Weight15.000000
ManufacturerOnline Supply
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Carrier KSACN1401AAA Wired Programmable Remote - R454B
SKUKSACN1401AAA
Weight2.000000
ManufacturerCarrier
RefrigerantR454B
Indoor Units15 + 15 + 18
Height2
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Carrier KSACN1201AAA Wired Programmable Remote - R454B
SKUKSACN1201AAA
Weight3.000000
ManufacturerCarrier
RefrigerantR454B
Indoor Units15 + 15 + 18
Carrier KSAIF0701AAA Wi-Fi Interface Kit
SKUKSAIF0701AAA
Weight1.000000
ManufacturerCarrier
RefrigerantR454B
Indoor Units15 + 15 + 18
Carrier KSAIC0501230 24V Interface Kit - R454B
SKUKSAIC0501230
Weight4.000000
ManufacturerCarrier
RefrigerantR454B
Indoor Units15 + 15 + 18
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You're reviewing:18,000 BTU Carrier Infinity 25.8 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V
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Customer Questions
What happens if it arrives damaged?
If you are present during drop-off and you see obvious signs of damage or rough handling in transit - please ask the driver to wait while you inspect the equipment. If it is damaged badly enough that you believe it can not function, you have the right to refuse the damaged portion of the shipment. If you discover the damage after the driver has left, take photos of the damage and send them to customerservice@hvacdirect.com. Please refer to your order number in the email. This starts the process and one of our representatives will be in touch with you promptly.
How can I find an installer?
It’s easier than you think – the key is to find an independent contractor or small company as opposed to a larger HVAC service. A one or two person outfit will do the work more quickly and cheaply than a bigger company, too. Yelp.com, Thumbtack.com, and Porch.com are websites are designed to help you connect with a professional in your area. You could also place a call to the last professional who did work on your home and see if they have any recommendations.
Who makes Carrier mini splits?
Carrier mini splits come from one of the most recognized names in HVAC, offering reliable, energy-efficient solutions for year-round comfort.
Can I install a Carrier mini split myself, or do I need a professional?
Carrier mini splits require professional installation. A licensed HVAC contractor ensures proper sizing, refrigerant handling, and warranty protection.
What kind of warranty comes with a Carrier mini split?
Most Carrier mini splits include a 10-year limited parts warranty when registered, giving you long-term peace of mind. Warranty terms may vary by model and installer.
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