MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Air Handler 230V/60Hz

MODEL: DIY-24-HP-WMAH-230C25

Whole-Home Comfort for Spaces Up to 1,000 sq. ft.

The MRCOOL® DIY 4th Gen 24K BTU Wall Mounted Air Handler is your go-to solution for powerful, energy-efficient climate control in large spaces. Engineered to pair seamlessly with MRCOOL® DIY condensers, this unit delivers up to 20.5 SEER performance and comfortably handles rooms up to 1,000 sq. ft. Whether you're cooling a wide living area or heating a spacious home office, this ENERGY STAR® certified unit does it all—quietly and efficiently.

With multiple operating modes (COOL, HEAT, AUTO, DRY, and SLEEP), this smart air handler adapts to your needs year-round. Control it hands-free via Alexa or Google Assistant, or stay connected anywhere with the SmartHVAC® app for iOS and Android.

Installation is a breeze with the included mounting plate and compatibility with MRCOOL®’s patented Pre-Charged Quick Connect® Line Sets—preloaded with R-410A refrigerant and ready to connect without vacuuming or specialty tools.

Why You’ll Love It

✅ Cools & Heats Large Areas — Ideal for open living rooms, master bedrooms, basements, or small apartments (up to 1,000 sq. ft.)

✅ True DIY Setup — Installs quickly with MRCOOL® Pre-Charged Quick Connect® Line Sets

✅ Energy Efficient — Up to 20.5 SEER rating for lower energy bills and optimal comfort

✅ Smart Home Ready — Control via SmartHVAC® app, Alexa, or Google Assistant

✅ Ultra-Quiet Operation — Operates as low as 33 dBA

✅ Safety-First — Includes DIY Pro™ Cable for safe, outdoor-rated wiring

✅ Industry-Leading Warranty — Lifetime Compressor (with registration), 7-Year Compressor, 5-Year Parts

Specifications

Specifications at a Glance

Attribute	Details
Cooling Capacity (BTU)	23,000
Heating Capacity (BTU)	25,000
Max Coverage Area	Up to 1,000 sq. ft.
Voltage	208–230V
SEER	Up to 20.5
Mount Type	Wall
Refrigerant Type	R-410A
Decibel Rating (dBA)	33 (Low) – 48.5 (High)
Blower Motor RPM	1200 / 1000 / 700
Liquid Line Size	3/8”
Suction Line Size	5/8”
Max Line Set Length	98.42 ft
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)	42.52” x 13.19” x 8.90”
Net Weight	35.27 lbs

What’s Included:

• MRCOOL® 24K BTU 4th Gen Wall Mounted Air Handler (208-230V)

• Remote Control

• Mounting Plate

• SmartHVAC® Module

• 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.