MRCOOL DIY 18,000 BTU 5th Gen Ductless Mini Split Heat Pump System - 22.5 SEER2, Energy Star, 230V (DIY-18-HP-WM-230D25-O)

MRCOOL SKU: DIY-18-HP-WM-230D25-O

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Description

MRCOOL DIY 18K BTU 22.5 SEER2 5th Gen Ductless Mini Split Heat Pump System - 230V

Transform your home's climate control with the 5th Generation MRCOOL DIY 18K Heat Pump System, now enhanced with R454B refrigerant. This eco-friendly innovation boosts energy efficiency, reduces greenhouse gas emissions, and offers a lower Global Warming Potential (GWP), making it a smart choice for homeowners seeking an environmentally conscious climate solution. Engineered for effortless DIY installation, this system requires no special tools or prior experience - simply connect the pre-charged 25-foot QuickConnect line set and activate your comfort.

The DIY 18K system is designed for spaces up to 750 sq ft with a powerful 22.5 SEER2 rating that delivers exceptional energy efficiency and lower utility bills. The included DIYPRO cable eliminates the need for electrical conduit, offering added durability against outdoor elements and wildlife. Control your system with complete flexibility using the wireless remote, SmartHVAC app for Apple and Android devices, or hands-free voice commands through Amazon Alexa and Google Assistant. The innovative Follow Me function tracks air temperature around your remote to ensure maximum comfort, while Dry Mode reduces humidity and excess condensation. The Gold Fin Condenser provides superior corrosion resistance, keeping your system performing reliably in any climate - especially coastal homes exposed to harsh conditions.

Backed by an industry-leading warranty including a Limited Lifetime warranty, 7-year compressor protection, and 5-year parts coverage, this system delivers lasting reliability and peace of mind.

Say goodbye to installation stress with MRCOOL DIY 18K, designed to deliver premium comfort while keeping your wallet intact. Experience advanced technology, simple installation, and year-round efficiency with confidence using MRCOOL DIY 5th Generation!

 

Ideal For:

  • Homeowners avoiding expensive professional installation costs - DIY installation eliminates service call fees while delivering professional-grade 22.5 SEER2 cooling and heating performance.
  • Tech-savvy DIY enthusiasts with medium-sized spaces - No special tools, no vacuuming, no certifications required—straightforward connection designed for anyone managing 750 sq ft comfort needs.
  • Property owners in coastal and humid climates - Gold Fin corrosion-resistant condenser protects equipment while delivering reliable year-round performance in challenging salty or damp environments.
  • Smart home automation seekers - Wi-Fi connectivity enables voice control via Alexa and Google Assistant, plus app-based scheduling and Follow Me comfort tracking for personalized control.

 

Why Customers Trust MRCOOL 18K 5th Gen Heat Pump System

  • Exceptional Energy Efficiency - 22.5 SEER2 rating delivers powerful cooling and heating while significantly reducing monthly utility bills and qualifying for energy rebates.
  • Truly Simple Installation - No special tools, no refrigerant vacuuming, no certifications required—pre-charged QuickConnect lines make setup fast and completely foolproof.
  • Innovative Comfort Features - Follow Me function adapts airflow temperature based on remote location, while Dry Mode dehumidifies for optimal indoor air quality and comfort.
  • Eco-Friendly Smart Technology - R454B refrigerant reduces environmental impact while SmartHVAC app and voice control provide convenient remote management and scheduling.
  • Lifetime Reliability Assurance - Limited Lifetime warranty plus 7-year compressor protection deliver confidence without expensive professional service dependencies.

 

Certifications & Warranty

  • Energy Star Compliant - Meets EPA energy efficiency standards for residential cooling and heating applications
  • 22.5 SEER2 Energy Rating - Superior energy efficiency for significant utility savings and rebate eligibility
  • Eco-Friendly R454B Refrigerant - Low Global Warming Potential with reduced greenhouse gas emissions
  • Gold Fin Corrosion Resistance - Protection against coastal salt air and high-humidity environments
  • SmartHVAC Wi-Fi Certified - Compatible with Amazon Alexa and Google Assistant voice control ecosystems
  • Limited Lifetime Warranty - Comprehensive coverage for peace of mind and long-term reliability
  • 7-Year Compressor Limited Warranty - Extended protection on the core heating and cooling component
  • 5-Year Parts Limited Warranty - Coverage on system components and internal systems
  • DIY Installation Supported - No professional installation required—warranty valid with proper registration
  • Online Registration Required - Simple registration activates full warranty coverage and extended protection benefits

What's Included

Everything you need is included with your MRCOOL DIY Mini Split.

  • MRCOOL 18k DIY 5th Generation Mini-split Air Handler 230v
  • MRCOOL 18k DIY 5th Generation Mini-Split Condenser 230v
  • SmartHVAC Wi-Fi Control Module (integrated)
  • Wireless Remote Control with Follow Me Function
  • Pre-charged 25-foot QuickConnect Line Set
  • DIYPRO Protective Cable (no electrical conduit required)
  • Mounting Brackets and Hardware
  • Installation Guide and Support Resources
  • Cable Connectors and Protective Materials


MRCOOL DIY 18K Heat Pump System 230V Features

  • 18,000 BTU with 22.5 SEER2 Rating - Powerful cooling and heating for spaces up to 750 sq ft with exceptional energy efficiency and reduced utility costs.
  • 5th Generation R454B Refrigerant - Advanced eco-friendly refrigerant reduces environmental impact while enhancing system efficiency and reliability.
  • Patented QuickConnect Pre-Charged Line Set - Includes 25-foot pre-charged line set with correct R454B refrigerant amount—no vacuuming, no special tools, just simple connections.
  • No Professional Installation Required - True DIY design eliminates expensive service calls while maintaining professional-grade performance and reliability.
  • SmartHVAC Wi-Fi Control Module - Integrated connectivity for iOS/Android app access, Amazon Alexa, and Google Assistant voice commands from anywhere.
  • Follow Me Function - Wireless remote tracks air temperature around your location and automatically adjusts airflow for consistent personalized comfort.
  • Dry Mode (Dehumidify) - Advanced dehumidification removes excess humidity and condensation buildup for healthier indoor environments and improved air quality.
  • Gold Fin Condenser Coating - Corrosion-resistant protection ideal for coastal, humid, and challenging environmental conditions for extended equipment lifespan.
  • DIYPRO Protective Cable - Eliminates need for electrical conduit, offering added durability against outdoor elements and wildlife protection.
  • Multiple Operating Modes - COOL, HEAT, AUTO, DRY, and SLEEP modes provide flexibility for year-round comfort and energy optimization.

MRCOOL DIY-18-HP-C-230D25-O Condenser Specs

BRAND NAME MRCOOL
SERIES DIY 5th gen Single-Zone Mini-splits
MODEL DIY-18-HP-C-230D25-O
GTIN 840255586962
UPC 840255586962
UNIT TYPE Mini-Split
EQUIPMENT TYPE Condenser
SHORT DESCRIPTION MRCOOL 18k DIY 5th Generation Mini-Split Condenser 230v
SEER2 22.5
EER2 13.7
HSPF2-4 11.5
HSPF2-5 8.5
TONNAGE 1.5
COOLING CAPACITY (BTU) 18000
HEATING CAPACITY (BTU) 18000
VOLTAGE (V) 208-230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 20
MIN CIRCUIT AMPACITY (A) 18
ZONE CAPACITY 1
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 44.8
DECIBEL RATING (DBA) 58.5
INVERTER DC
MAX LINESET LENGTH (FT) 98.4
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE 1/2
COMPRESSOR MOTOR TYPE ROTARY
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
UL LISTED Yes
ETL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY Extended Limited Lifetime*
BASE PARTS WARRANTY 5
BASE COMPRESSOR WARRANTY 7
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
NET DEPTH (IN) 13.46
NET HEIGHT (IN) 26.5
NET WIDTH (IN) 35.04
NET WEIGHT (LBS) 93.48
GROSS DEPTH (IN) 18.11
GROSS HEIGHT (IN) 29.53
GROSS WIDTH (IN) 40.55
GROSS WEIGHT (LBS) 114.2

MRCOOL DIY-18-HP-WMAH-230D25-O Air Handler Specs

BRAND NAME MRCOOL
SERIES DIY 5th gen Single-Zone Mini-splits
MODEL DIY-18-HP-WMAH-230D25-O
GTIN 840255587044
UPC 840255587044
UNIT TYPE Mini-Split
EQUIPMENT TYPE Air Handler
SHORT DESCRIPTION MRCOOL 18k DIY 5th Generation Mini-split Air Handler 230v
TONNAGE 1.5
VOLTAGE (V) 208-230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 15
MIN CIRCUIT AMPACITY (A) 3
MOUNT TYPE Wall
COLOR White
MAX COVERAGE AREA 800 sqft
DECIBEL RATING (DBA) 19 (Low) - 54.5 (High)
NUMBER OF SPEEDS 5
OSCILLATION Yes
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE 3/8
FILTER TYPE Reusable
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
REMOTE CONTROL INCLUDED Yes
UL LISTED Yes
ETL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY Extended Limited Lifetime*
BASE PARTS WARRANTY 5
BASE COMPRESSOR WARRANTY 7
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
NET DEPTH (IN) 8.9
NET HEIGHT (IN) 13.19
NET WIDTH (IN) 42.52
NET WEIGHT (LBS) 35.49
GROSS DEPTH (IN) 17.68
GROSS HEIGHT (IN) 14.29
GROSS WIDTH (IN) 46.73
GROSS WEIGHT (LBS) 49.6

Understanding your MRCOOL warranty coverage ensures long-term system performance and protection. All warranties are non-transferable and valid only at the original installation address.

Warranty Coverage by Series

DIY Series 5th Generation Mini-Splits

Models: DIY-09-HP through DIY-36-HP, DIYCASSETTE, DIY-MULTI series

  • Parts: 5 years from proof of purchase
  • Compressor: 7 years from proof of purchase
  • Remote Control: Included in parts warranty
  • Extended Lifetime Warranty: Available with MRCOOL Care Kit Program enrollment (fee required)
  • Installation: Professional installer NOT required when using MRCOOL Quick Connect Pre-Charged Line Set

Advantage Series Mini-Splits

Models: A-09-HP through A-36-HP series

  • Parts: 1 year from proof of purchase
  • Compressor: 2 years from proof of purchase
  • Extended Lifetime Warranty: Available with MRCOOL Care Kit Program enrollment (fee required)

    Must register within 180 days of purchase
    Covers compressor failure only with one-time condenser replacement
    Requires ongoing Care Kit Program maintenance
Easy Pro Series Mini-Splits

Models: EZPRO-09-HP through EZPRO-24-HP series

  • Parts: 1 year from proof of purchase
  • Compressor: 2 years from proof of purchase
  • Extended Lifetime Warranty: Available with MRCOOL Care Kit Program enrollment (fee required)

Central Ducted Systems

Models: CENTRAL-18-HP through CENTRAL-60-HP, MVP Series

  • Parts: 10 years from installation date
  • Compressor: 10 years from installation date
  • Labor: 10 years (installer responsible for first 90 days)
  • Installation: Professional installer NOT required when using MRCOOL Quick Connect Pre-Charged Line Set

Universal Series Split Systems

Models: UHP series, UAH series Air Handlers

  • Parts: 10 years from proof of purchase
  • Compressor: 10 years from proof of purchase
  • Labor: 2 years limited (begins 91 days after purchase, covers diagnostic and repair costs)
  • Installation: Professional installer required

Inverter Package Series

Models: GCSHPM series, GCSCAM series

  • Parts: 10 years from installation date
  • Labor: 5 years limited (manufacturing defects only, begins 91 days after installation)
  • Installation: Professional installation required

Olympus Series Mini-Splits

Models: MDUO, MDUCO, MDUI series

Owner-Occupied Residences:

  • Parts: 5 years standard, 10 years with registration within 60 days
  • Compressor: 5 years standard, 10 years with registration within 60 days

Commercial Applications:

  • Parts & Compressor: 5 years with registration within 60 days
  • Installation: Professional installer required

Key Warranty Conditions

Product Registration:

  • Register at mrcool.com/warranty to activate extended coverage (where applicable)
  • Registration deadlines vary by series (30-180 days from purchase)

Installation Requirements:

  • Must comply with all federal, state, and local electrical codes
  • Must follow MRCOOL installation instructions
  • Must use new, compatible, MRCOOL-approved components
  • Warranty voids if installed with used or incompatible parts

Warranty Does NOT Cover:

  • Labor, diagnostic, shipping, or installation costs (except where labor warranty applies)
  • Normal maintenance (filter cleaning, lubrication, coil cleaning)
  • Refrigerant costs or energy consumption
  • Damage from improper installation, natural disasters, or electrical issues
  • Units moved from original installation address
  • Units installed outside USA and Canada

How to File a Warranty Claim

Contact MRCOOL:

For Labor Claims (Universal/Inverter Package Series within first 2 years):

  • Phone: (844) 518-2040

Required Documentation:

  • Proof of purchase
  • Product registration confirmation (if applicable)
  • Diagnostic testing results (professional HVAC technician may be required)
  • Defective parts must be returned when requested

For complete warranty terms and conditions, visit mrcool.com/warranty

Replacement parts are covered for the remainder of the original warranty period or 30 days, whichever is longer. Some states do not allow exclusion of incidental or consequential damages. This warranty gives you specific legal rights that may vary by state or province.

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MRCOOL DIY 18,000 BTU 5th Gen Ductless Mini Split Heat Pump System - 22.5 SEER2, Energy Star, 230V (DIY-18-HP-WM-230D25-O) Reviews

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