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MRCOOL |
SKU: DIY-18-HP-WMAH-230D25-O

MRCOOL DIY 5th Gen 18K 18000 BTU Single Zone Ductless Mini Split Air Handler 230V - DIY-18-HP-WMAH-230D25-O

$931.00
Authorized MRCOOL Dealer
  • Efficient DIY installation
  • R-454B refrigerant for eco-friendly performance
  • Built-in WiFi, app control, and voice command support
  • Pre-Charged QuickConnect® line set
Ships in 1–2 business days · Estimated delivery 4–7 business days
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Description

MRCOOL DIY 5th Gen 18K 18000 BTU Ductless Mini Split Air Handler 230V

The 5th Generation MRCOOL® DIY® 18K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler is a powerful and efficient solution for heating and cooling spaces up to 800 sq. ft. Designed with a true DIY installation in mind, this system eliminates the need for special tools or professional assistance, making setup fast, simple, and cost-effective.

One of the standout features is the pre-charged 25-foot DIY® QuickConnect® line set, which comes pre-filled with R-454B refrigerant. This means there’s no need for vacuuming, cutting down on installation time and costs. Additionally, the included DIYPRO® cable removes the need for electrical conduit, providing added durability and protection against outdoor elements and wildlife.

Controlling your system is effortless with multiple options to fit your lifestyle. Adjust settings using the wireless remote, the SmartHVAC app for Apple and Android devices, or hands-free voice commands through Amazon Alexa and Google Assistant. Engineered for long-lasting performance, the Gold Fin® Condenser in the outdoor unit offers superior corrosion resistance, especially beneficial in coastal environments. For added comfort, the Follow Me function on the remote allows the air handler to monitor and adjust airflow based on the remote’s location, ensuring even temperature control. Dry Mode helps maintain a comfortable indoor environment by reducing excess humidity and condensation buildup. 

Backed by industry-leading warranties—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—the 5th Generation MRCOOL® DIY® is built for reliability. Enjoy smart features, easy installation, and dependable year-round comfort with this innovative ductless mini-split system.

Features

  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.

Specifications

SERIES

DIY 5th gen Single-Zone Mini-splits

MODEL

DIY-18-HP-WMAH-230D25-O

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 LOW (DBA)

19

DECIBEL RATING HIGH (DBA)

54.5

NUMBER OF SPEEDS

5

OSCILLATION

Yes

LIQUID LINE SIZE

1/4

SUCTION LINE SIZE

1/2

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

CA Residents: ⚠️ 

Warranty

This MRCOOL 5th Generation DIY® Series system includes a manufacturer limited warranty covering defects in materials and workmanship under normal use:

  • 5-Year Limited Parts Warranty

  • 7-Year Limited Compressor Warranty

Warranty applies to the original owner only, is non-transferable, and does not require registration. Labor, refrigerant, shipping, and installation costs are not covered.
For complete terms, exclusions, and claim procedures, please refer to the official MRCOOL warranty documentation.

Manuals & Documents

Installation Manual

MRCOOL Brochure

Remote Manual

Warranty Documents

Accessories Manual

MRCOOL DIY 5th Gen 18K 18000 BTU Single Zone Ductless Mini Split Air Handler 230V - DIY-18-HP-WMAH-230D25-O

MRCOOL DIY 5th Gen 18K 18000 BTU Single Zone Ductless Mini Split Air Handler 230V - DIY-18-HP-WMAH-230D25-O

$931.00
MRCOOL DIY 5th Gen 18K 18000 BTU Single Zone Ductless Mini Split Air Handler 230V - DIY-18-HP-WMAH-230D25-O

MRCOOL DIY 5th Gen 18K 18000 BTU Single Zone Ductless Mini Split Air Handler 230V - DIY-18-HP-WMAH-230D25-O

$931.00