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MRCOOL 18,000 BTU DIY 5th Gen Hyper Heat 21.2 SEER2 Single Zone Wall Mount Mini Split Heat Pump System w/ 25' Line Set - R454B | 230V

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Model

DIYHH-18-HP-WM-230D25-O

ID

221935

Was $3,266.10
Your Low Price $3,173.00
 
  • Do-It-Yourself Installation
  • Strong Warranty
  • Ductless Solution
  • Perfect for a room up to 800 sqft
  • Wi-Fi & Smartphone App Capabilities
  • Includes 25ft Line Set
Customize MRCOOL 18,000 BTU DIY 5th Gen Hyper Heat 21.2 SEER2 Single Zone Wall Mount Mini Split Heat Pump System w/ 25' Line Set - R454B | 230V
18,000 BTU MRCOOL Single Zone Condenser - R454B
18,000 BTU MRCOOL Single Zone Condenser - R454B   + $2,242.00
18,000 BTU MRCOOL DIY 5th Gen Wall Mount Air Handler - R454B
18,000 BTU MRCOOL DIY 5th Gen Wall Mount Air Handler - R454B   + $931.00
Installation Kit for Condensers
21" Wall Mount Bracket
MRCOOL 5th Gen 18K BTU Hyper Heat Ductless Mini Split Heat Pump System with Line set 230V - DIYHH-18-HP-WM-230D25-O

$3,173.00

MRCOOL DIY 18,000 BTU 5th Gen Hyper Heat SEER 21.2 Single Zone Wall Mount Mini Split Heat Pump System - R454B | 230V

The MRCOOL® DIY® 5th Generation Hyper Heat 18,000 BTU Single Zone Mini Split system delivers powerful, high-efficiency heating and cooling with unmatched DIY® installation simplicity. Designed for larger residential spaces up to 800 square feet, this system combines cold-climate Hyper Heat performance, advanced DC inverter technology, and smart controls to provide dependable year-round comfort.

Product Overview

  • Cooling Capacity: 18,000 BTU
  • Heating Capacity: 18,000 BTU
  • Maximum Coverage Area: Up to 800 sq. ft.
  • Refrigerant: R-454B (environmentally friendly, low-GWP)
  • Application: Ideal for single-zone residential spaces
  • Operational Temperature Range: -22°F to 122°F

Key Features

  • Hyper Heat Technology: Provides reliable heating even in extreme sub-zero outdoor temperatures.
  • High Efficiency: SEER2 21.2, EER2 12.5, HSPF2-4 11.0, HSPF2-5 8.5.
  • DC Inverter Technology: Automatically adjusts output for consistent comfort and reduced energy usage.
  • Quiet Operation: Indoor sound levels as low as 20.5 dB(A) in silent mode.
  • Energy Star Certified: Meets Energy Star® V6.1 and Cold Climate requirements.

Installation & Requirements

  • DIY® Installation: No HVAC license, vacuum pump, or specialized tools required.
  • Quick Connect® Line Set: 25-foot pre-charged line set included.
  • Voltage: 208/230V, single-phase, 60Hz.
  • Minimum Circuit Ampacity: 19A (outdoor).
  • Maximum Fuse Size: 25A.
  • Piping Size: 1/4" liquid line, 1/2" gas line.
  • DIYPRO® Armored Cable: Included to eliminate the need for electrical conduit.

Comfort & Smart Controls

  • Multiple Control Options: Included remote, smartphone app, and voice control.
  • SmartHVAC App: Compatible with iOS and Android devices.
  • Digital Assistant Ready: Supports Amazon Alexa and Google Assistant.
  • Follow Me® Function: Uses the remote’s temperature sensor to maintain personalized comfort.
  • Auto Mode: Automatically balances comfort and energy efficiency.

Advanced Operating Functions

  • Turbo Mode: Quickly reaches desired indoor temperature.
  • Programmable Timer: Optimizes comfort based on occupancy schedules.
  • Auto Restart: Automatically resumes operation after power interruptions.
  • Leakage Detection: Alerts users to potential refrigerant issues.
  • Low Ambient Cooling: Maintains cooling performance in colder outdoor conditions.

Construction & Design

  • Wall-Mounted Air Handler: Sleek, modern profile suitable for residential interiors.
  • Louver Position Memory: Restores the previous airflow position after shutdown.
  • Gold Fin® Coating: Corrosion-resistant design ideal for inland and coastal installations.
  • Indoor Dimensions: 42.52 x 8.90 x 13.19 inches.
  • Indoor Weight: 35.49 lbs (net).

Warranty

Includes manufacturer warranty coverage. When registered by the original owner and enrolled annually in the MRCOOL® Care Program, extended compressor and full unit replacement benefits may apply. Standard warranty applies if registration requirements are not met.

18,000 BTU MRCOOL Single Zone Condenser - R454B

The MRCOOL DIY 18K BTU Hyper Heat 21.2 SEER Ductless Heat Pump Single Zone Mini Split Condenser

The MRCOOL DIY 12K BTU Hyper Heat 23.5 SEER Ductless Heat Pump Single Zone Mini Split Condenser makes home climate control easier than ever. Designed for effortless installation, this system requires no special tools or professional experience and is ideal for spaces up to 800 sq. ft. With a pre-charged 25-foot QuickConnect line set filled with R-454B refrigerant, setup is simple and eliminates the need for vacuuming.

Key Features

The included DIYPRO cable enhances durability, replacing traditional electrical conduit to protect against weather, animals, and yardwork damage.
  • DIY Installation: Includes a 25-foot pre-charged Fast Connection® line set, allowing for easy setup without the need for professional tools or training.
  • Smart Controls: Compatible with the SmartHVAC Controller App, enabling remote operation via smartphone and voice control through Amazon Alexa and Google Assistant.
  • Energy Efficiency: Achieves a SEER2 rating of 21.2 and an HSPF2-4 rating of 10, providing cost-effective performance throughout the year.
  • Quiet Operation: Operates at a low noise level of 56.5 dB(A), ensuring a peaceful environment.
  • Low Ambient Cooling: Capable of cooling in outdoor temperatures as low as -22°F, making it suitable for server rooms and greenhouses.
  • Additional Features: Includes Follow Me® function, Sleep Mode, Auto Mode, Timer Mode, and refrigerant leakage detection for enhanced comfort and safety.

Warranty

  • Parts Warranty: 5 Years
  • Compressor Warranty: 7 Year
18,000 BTU MRCOOL DIY 5th Gen Wall Mount Air Handler - R454B

MRCOOL 18k DIY 5th Generation Mini-Split Air Handler 230V

The MRCOOL DIY 18k BTU 5th Generation Air Handler is part of an advanced ductless mini-split system that delivers powerful and energy-efficient climate control for any space. Designed for easy installation by homeowners, this unit combines performance, convenience, and smart features to redefine home comfort.

This 230V air handler is compatible with MRCOOL DIY Quick Connect line sets, allowing for fast, tool-free installation without the need for specialized HVAC skills or certifications. With its sleek, modern design and enhanced technology, it’s ideal for spaces up to 750 square feet.

Key Features

  • DIY Quick Connect Installation
  • 18,000 BTU Capacity: Effectively heats and cools medium to large rooms with consistent comfort and efficiency.
  • Smart HVAC Features: Includes compatibility with the MRCOOL SmartHVAC app, Amazon Alexa, and Google Assistant for convenient voice or app control.
  • Auto Restart & Leakage Detection: Automatically restarts after power outages and alerts for refrigerant leaks to protect your system.
  • Low Ambient Cooling: Operates efficiently in cooling mode down to 5°F outdoor temperatures, making it suitable year-round.
  • Quiet Operation: Minimizes indoor noise levels for a more comfortable and peaceful environment.
  • Sleep Mode & Timer Function: Improves nighttime comfort and allows programmable operation tailored to your schedule.

Technical Highlights

  • Model: DIY-18-HP-WMAH-230D25-O
  • Power Supply: 208/230V, 60Hz, 1 Phase
  • Air Flow (H/M/L): 706/618/530 CFM
  • Sound Levels (H/M/L): 47/43/38 dB(A)
  • Mounting Type: Wall Mounted
  • Coverage Area: Up to 750 sq. ft.

With the MRCOOL DIY 5th Gen 18k Air Handler, homeowners can enjoy professional-grade performance and high-efficiency comfort without the cost and complexity of traditional installation. This unit is an ideal upgrade for those looking to enhance their space with reliable, smart, and user-friendly climate control.

Installation Kit for Condensers

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.

What’s Included:

  • 3/4" x 6' Electrical Whip – SKU: 84138
  • 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!

21" Wall Mount Bracket

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.

Equipment Pad and Risers Kit

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.

More Information
MRCOOL 18,000 BTU 5th Gen Hyper Heat Single Zone Mini Split Heat Pump Condenser - R454B | 230V
FeatureSpec
SKUDIYHH-18-HP-C-230D25-O
Weight (in lbs)83.11
AHRI Certificate Number216032552
Brand/ManufacturerMRCOOL
UPC840255588096
Cooling BTU18000 BTU
Heating BTU18000 BTU
Energy StarYes
RefrigerantR454B
HSPF211
SEER2 (Efficiency)21.2
EER212.5
Liquid Line1/4"
Suction Line1/2"
Electrical230V 1 Phase 60 Hz
Max Breaker Size25 Amps
Min. Breaker Size19 Amps
BTU/Tonnage18,000 BTU/1.5 Ton
Min/Max Outdoor Temp for Heating-22°F - 122°F
Min/Max Outdoor Temp for Cooling-22°F -122°F
Zone CompatibilitySingle Zone
Height26.5"
Width35.04"
Depth13.46"
Warranty7 Year Compressor / 5 Years Parts Warranty with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
MRCOOL 18,000 BTU DIY 5th Generation Single Zone Wall Mount Mini Split Air Handler - R454B | 230V
FeatureSpec
SKUDIY-18-HP-WMAH-230D25-O
Weight (in lbs)35.49
Brand/ManufacturerMRCOOL
ReplacesDIY-18-HP-WMAH-230C25
UPC810063868512
ControllerIncluded
Cooling BTU18,000 BTU
Heating BTU18,000 BTU
Maximum CFM706 Turbo / 618 Hi / 530 Med / 430 Lo CFM (Airflow)
Decibel Level (dBA)19.0 - 54.5 dBA
RefrigerantR454B
Liquid Line1/4"
Suction Line1/2"
Electrical208/230V | 1 Phase | 60Hz
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilitySingle Zone
Height13.19"
Width42.52"
Depth8.9"
Warranty7 Year Compressor / 5 Years Parts Warranty with Online Registration
Resources You will need Adobe Acrobat Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Installation Kit for Condensers - Accessory Set
FeatureSpec
SKUMSK001
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
21" Wall Mount Bracket for Mini Split Systems
FeatureSpec
SKU230-B2L
Weight (in lbs)9.2
Brand/ManufacturerOnline Supply
UPC0095247127436
Length40"
Height3"
Width6"
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
FeatureSpec
SKU87762 / EL1838-3
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
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Why Choose MRCOOL?

MRCOOL mini split systems combine innovative design with advanced manufacturing to deliver efficient, reliable comfort wherever you need it. Built with cutting-edge technology, these systems ensure optimal performance and flexibility for any space.

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