MRCOOL® E Star DIY 4th Gen 9k BTU Ductless Mini-Split Air Handler 230V/60Hz
MODEL: DIY-09-HP-WMAH-230C25
Product Description
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 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:
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MRCOOL® 9K BTU 4th Gen Wall Mounted Air Handler (208-230V)
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Remote Control
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Mounting Plate
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MRCOOL® Warranty Documents
What You Need for a Complete System
This unit requires pairing with:
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Compatible MRCOOL® DIY® 4th Gen Multi-Zone Condenser
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Pre-Charged Quick Connect® Line Sets (sold separately)
Installation & Manuals
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.
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Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.
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Tracking details will be sent within 3–5 business days after placing your order.
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Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.
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Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.
👉 Click here for our full Shipping Policy
Return Policy
We want you to love your purchase from Cool Heat Direct. If you need to return an item:
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Contact us within 30 days of delivery.
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Items must be unused, uninstalled, and in their original packaging.
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A 35% restocking fee applies to all approved returns.
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Accessories such as line sets, wall mounts, and couplers are non-returnable.
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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.
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