MRCOOL® E Star DIY 4th Gen 9k BTU Ductless Mini-Split Air Handler 230V/60Hz

MODEL: DIY-09-HP-WMAH-230C25

Efficient, DIY-Friendly Comfort for Spaces up to 375 sq. ft.

The MRCOOL® DIY 4th Gen 9,000 BTU Ductless Wall Mounted Air Handler offers powerful, energy-efficient climate control with a SEER rating of 22. Designed for easy installation and seamless compatibility with MRCOOL® Pre-Charged Quick Connect® Line Sets, it delivers hassle-free heating and cooling without requiring a professional installer.

Perfect for bedrooms, home offices, or small living areas, this ENERGY STAR® certified unit offers versatile modes — COOL, HEAT, AUTO, DRY, SLEEP, and a whisper-quiet fan option — for personalized year-round comfort.

SmartHVAC® Wi-Fi connectivity lets you manage settings remotely through the SmartHVAC® app, Amazon Alexa, or Google Assistant. A compact, lightweight design ensures easy wall mounting with the included DIY Pro™ Cable for added wiring protection.

Backed by a Limited Lifetime Compressor Warranty (with registration), this air handler pairs premium features with total peace of mind.

Why You’ll Love It

✅ Cools & Heats up to 375 sq. ft. — Perfect for bedrooms, offices, and compact living areas

✅ True DIY Installation — Use with Pre-Charged Quick Connect® Line Sets; no vacuuming or licensed tech needed

✅ ENERGY STAR® Certified — Energy-efficient SEER 22 performance

✅ Smart Wi-Fi Control — Works with SmartHVAC® app, Alexa, and Google Assistant

✅ Ultra-Quiet Operation — Runs at just 25–40 dBA

✅ Versatile Modes — COOL, HEAT, AUTO, DRY, SLEEP, and fan-only settings

✅ DIY Pro™ Cable — Enhanced outdoor wiring protection

✅ Best-in-Class Warranty — Limited Lifetime Compressor (with registration), 7-Year Compressor, 5-Year Parts

Specifications

Specifications at a Glance

Attribute	Details
Cooling/Heating Capacity (BTU)	9,000
Voltage	208-230V
Phase	1
Cycle	60 Hz
Max Fuse Breaker (A)	15
Min Circuit Ampacity (A)	3
Mount Type	Wall
Coverage Area	Up to 375 sq. ft.
SEER	22
Refrigerant Type	R-410A
Decibel Range (dBA)	25–40
Liquid Line Size	1/4”
Suction Line Size	1/2”
Blower Motor RPM	1050 / 850 / 650
Wi-Fi Enabled	Yes
App Compatibility	iOS & Android
Remote Control Included	Yes
ENERGY STAR® Certified	Yes
Warranty	Lifetime Compressor (with registration), 7-Year Compressor, 5-Year Parts
Net Dimensions (WxHxD)	31.57” x 11.69” x 7.44”
Net Weight	23.81 lbs

What’s Included:

• MRCOOL® 9K BTU 4th Gen Wall Mounted Air Handler (208-230V)

• Remote Control

• Mounting Plate

• MRCOOL® Warranty Documents

What You Need for a Complete System

This unit requires pairing with:

• Compatible MRCOOL® DIY® 4th Gen Multi-Zone Condenser
  

• Pre-Charged Quick Connect® Line Sets (sold separately)
  

Installation

Installation & Manuals 

Product Brochure

Installation Manual

Remote Control Manual

Warranty Document

Service Manual

Shipping & Returns

Shipping Policy 

At Cool Heat Direct, we offer free curbside delivery on all MRCOOL product orders via FedEx Ground, FedEx Freight, or trusted carriers depending on order size.

• Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.

• Tracking details will be sent within 3–5 business days after placing your order.

• Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.

• Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.

Return Policy 

We want you to love your purchase from Cool Heat Direct. If you need to return an item:

• Contact us within 30 days of delivery.

• Items must be unused, uninstalled, and in their original packaging.

• A 35% restocking fee applies to all approved returns.

• Accessories such as line sets, wall mounts, and couplers are non-returnable.

• Return shipping is the customer’s responsibility unless the item is damaged or defective on arrival.

To start a return, please email us at support@coolheatdirect.com with your order number and reason for return.