MRCOOL DIY Hyper Heat 12,000 BTU 5th Gen Ductless Mini Split Heat Pump System - 23.5 SEER2, 230V (DIYHH-12-HP-WM-230D25-O)

MRCOOL SKU: DIYHH-12-HP-WM-230D25-O

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Sale price$2,532.00

Description

MRCOOL DIY 12K BTU 5th Gen Hyper Heat Single Zone Mini Split System - 230V

Install professional-quality heating and cooling yourself—no HVAC experience needed. The MRCOOL DIY 12K BTU Hyper Heat Mini Split gives you powerful climate control for 350-550 square feet with industry-leading 23.5 SEER2 efficiency that cuts your energy bills. Unlike standard heat pumps that quit in freezing weather, this system keeps heating efficiently down to -22°F.

Installation is genuinely simple. The 25-foot QuickConnect line set comes pre-charged with refrigerant, so you skip the vacuum pumps and expensive equipment—just connect, power on, and you're done. The DIYPRO cable replaces traditional conduit with weather-proof, pest-proof protection that won't get damaged.

Control your comfort your way. Adjust temperature with the wireless remote, SmartHVAC app, or voice commands through Alexa and Google Assistant. The Follow Me function optimizes temperature where you are, while features like Auto-Restart, programmable Timer, and Sleep Mode keep you comfortable automatically.

You're protected with exceptional warranty coverage. Enroll in MRCOOL Care Program for limited lifetime replacement warranty, or get standard 7-year compressor and 5-year parts coverage with quick online registration.

 

Perfect For:

  • DIY homeowners seeking professional results without contractor costs - Complete installation yourself using QuickConnect technology that eliminates vacuum pumps and refrigerant certification requirements.
  • Single rooms and spaces requiring dedicated climate control - Ideal for 350-550 sq. ft. areas including bedrooms, home offices, garages, workshops, and bonus rooms.
  • Cold climate regions demanding reliable winter heating - Hyper Heat technology maintains efficient heating performance down to -22°F when standard heat pumps fail.
  • Coastal properties requiring corrosion protection - Gold Fin condenser coating provides superior durability against salt air and harsh marine environments.

 

What Makes MRCOOL DIY Hyper Heat 12K the Ultimate DIY Solution

  • Genuine DIY Installation Without Professional Help - QuickConnect pre-charged line set and DIYPRO cable eliminate the need for specialized tools, training, or HVAC contractor expenses.
  • Extreme Cold Heating Capability - Hyper Heat technology delivers reliable heating down to -22°F outdoor temperatures when conventional heat pumps shut down.
  • Premium 23.5 SEER2 Efficiency - Industry-leading energy efficiency substantially reduces operating costs while maintaining powerful heating and cooling performance.
  • Complete Smart Home Integration - Control via wireless remote, SmartHVAC app, Amazon Alexa, or Google Assistant for ultimate convenience and flexibility.
  • Industry-Leading Warranty Protection - Limited lifetime replacement with Care Program enrollment, plus standard 7-year compressor and 5-year parts coverage.

 

Certifications & Warranty

  • Limited Lifetime Replacement Warranty - Available with MRCOOL Care Program enrollment providing ultimate long-term protection and peace of mind
  • 7-Year Compressor Warranty - Extended coverage on the system's most critical component ensuring reliable long-term operation
  • 5-Year Parts Warranty - Comprehensive protection on all system components with simple online product registration
  • Annual Care Kit Included - Provided with Care Program enrollment for ongoing maintenance and optimal system performance
  • Intertek Safety Certification - Listed to meet stringent safety and reliability standards for residential HVAC applications
  • 23.5 SEER2 Efficiency Rating - Premium energy performance for maximum utility savings and potential rebate qualification
  • R-454B Refrigerant Certified - Eco-conscious refrigerant with lower GWP than R-410A reducing environmental impact
  • Cold Climate Performance Rated - Hyper Heat technology certified for heating operation down to -22°F outdoor temperatures
  • Gold Fin Corrosion Resistant - Enhanced condenser coating ideal for coastal installations and harsh weather environments
  • Smart Home Compatible - Certified compatibility with Amazon Alexa and Google Assistant voice control platforms

What's Included

Everything you need is included with your MRCOOL Hyper Heat 12K BTU Mini Split System.

  • DIY 5th Gen - R454B - 12K Hyper Heat BTU 230V Condenser w/ 25ft Install Kit
  • MRCOOL 12k Hyper Heat DIY 5th Generation Mini-Split Air Handler 230v
  • 25 ft Pre-Charged R-454B QuickConnect Line Set
  • Remote Control


MRCOOL DIY Hyper Heat 12K BTU Single Zone Mini Split System Features

  • True DIY Installation Design - Engineered for straightforward setup without prior HVAC experience or specialized professional equipment required.
  • 25-Foot QuickConnect Line Set - Pre-charged with R-454B refrigerant eliminating vacuum pumps and refrigerant handling for hassle-free installation.
  • Eco-Friendly R-454B Refrigerant - Lower Global Warming Potential than R-410A reduces environmental impact while enhancing system efficiency.
  • Weather-Resistant DIYPRO Cable - Replaces traditional electrical conduit with superior protection against weather, pests, and outdoor damage.
  • Multiple Control Options - Wireless remote, SmartHVAC app (iOS/Android), Amazon Alexa, and Google Assistant voice control for ultimate flexibility.
  • Follow Me Temperature Optimization - Adjusts climate control based on remote location ensuring comfort exactly where you are in the room.
  • Humidity Control Dry Mode - Reduces excess moisture and regulates humidity levels for improved indoor air quality and comfort.
  • Gold Fin Corrosion Protection - Specialized condenser coating delivers enhanced durability in coastal and harsh weather environments.
  • Auto-Restart Function - Automatically resumes previous settings after power outages maintaining continuous comfort without manual intervention.
  • Programmable Timer - Schedule operation to match your daily routine for optimized energy efficiency and convenience.
  • Sleep Mode Efficiency - Adjusts temperatures gradually during sleeping hours maximizing comfort while reducing energy consumption.
  • Hyper Heat Performance - Maintains efficient heating operation down to -22°F outdoor temperatures for extreme cold climate reliability.
  • 23.5 SEER2 Energy Rating - Premium efficiency rating delivers substantial energy savings and potential utility rebate eligibility.
  • Dual Air Handler Compatibility - Works with sleek wall-mounted units or low-profile OuttaSight Ceiling Cassette for flexible installation aesthetics.

MRCOOL DIYHH-12-HP-C-230D25-O Condenser Specs

BRAND NAME MRCOOL
SERIES DIY Hyper Heat
MODEL DIYHH-12-HP-C-230D25-O
GTIN 840255588102
UPC 840255588102
UNIT TYPE Mini-Split
EQUIPMENT TYPE Condenser
SHORT DESCRIPTION DIY 5th Gen - R454B - 12K Hyper Heat BTU 230V Condenser w/ 25ft Install Kit
CFM 1471.5
TONNAGE 1
COOLING CAPACITY (BTU) 12000
HEATING CAPACITY (BTU) 12000
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MAX FUSE BREAKER (A) 15
MIN CIRCUIT AMPACITY (A) 15
COLOR White
MAX COVERAGE AREA 550
DECIBEL RATING (DBA) 56.5
DECIBEL RATING LOW (DBA) 21.5
INVERTER Yes
LIQUID LINE SIZE 1/4
SUCTION LINE SIZE 3/8
COMPRESSOR MOTOR TYPE Rotary
CONDENSER FAN MOTOR RPM 780/680/580
METERING DEVICE EEV
UL LISTED Yes
CSA CERTIFIED Yes
ETL CERTIFIED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY 7-Years Compressor, 5-Years Parts
BASE PARTS WARRANTY 5 Years
BASE WARRANTY 5-Years Parts
BASE COMPRESSOR WARRANTY 7 Years
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
WORKS WITH DIYCASSETTE12HP-230D25-O DIY-12-HP-WMAH-230D25-O
SEER2 23.5
EER2 12.8
HSPF2-4 10
HSPF2-5 8
REFRIGERANT TYPE R-454B
REFRIGERANT VOLUME (OZ) 32.1
MIN AMBIENT COOL (F) -22
MIN AMBIENT HEAT (F) -22
LINESET INCLUDED Yes
LINE SET LENGTH 25ft
MAX LINESET LENGTH (FT) 75
RESTRICTED STATES GU;PR;VI
NET DEPTH (IN) 12.99
NET HEIGHT (IN) 21.81
NET WIDTH (IN) 31.69
NET WEIGHT (LBS) 72.31
GROSS DEPTH (IN) 14.57
GROSS HEIGHT (IN) 24.21
GROSS WIDTH (IN) 36.02
GROSS WEIGHT (LBS) 79.59

MRCOOL DIY-12-HP-WMAH-230D25-O Air Handler Specs

BRAND NAME MRCOOL
SERIES DIY 5th gen Multi-Zone Mini-splits
MODEL DIY-12-HP-WMAH-230D25-O
GTIN 840255587037
UPC 840255587037
SHORT DESCRIPTION MRCOOL 12k DIY 5th Generation Mini-Split Air Handler 230v
VOLTAGE (V) 208/230
PHASE 1
CYCLE 60
MOUNT TYPE Wall
COLOR White
MAX COVERAGE AREA 550 sqft
OSCILLATION Yes
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
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) 7.44
NET HEIGHT (IN) 11.63
NET WIDTH (IN) 31.57
NET WEIGHT (LBS) 24.47
GROSS DEPTH (IN) 16.34
GROSS HEIGHT (IN) 14.37
GROSS WIDTH (IN) 36.02
GROSS WEIGHT (LBS) 35.05

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 Hyper Heat 12,000 BTU 5th Gen Ductless Mini Split Heat Pump System - 23.5 SEER2, 230V (DIYHH-12-HP-WM-230D25-O) Reviews

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