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Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
MRCOOL DIY® 5th Gen E Star 18,000 BTU Multi Zone Mini Split Air Handler 230V (DIY-18-HP-WMAH-230D25-O)

MRCOOL DIY® 5th Gen E Star 18,000 BTU Multi Zone Mini Split Air Handler 230V (DIY-18-HP-WMAH-230D25-O)

by MRCOOL
SKU DIY-18-HP-WMAH-230D25-O
Save 15% Save 15%
$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$931.00
$931.00 - $931.00
$931.00
  • Authorized online dealer
  • Transparent pricing. Any delivery cost is confirmed before processing*
  • Typical delivery 4 to 7 business days on standard shipments*
  • Price Match Guarantee. We beat verified prices
  • 30 day returns on eligible items
  • Manufacturer warranty included
  • No sales tax in most states*

Questions? Text or call +1 (307) 248-7227

*Exclusions apply. Freight, oversized items, made-to-order items, or remote delivery may require additional delivery time and cost confirmation. See Shipping and Returns.

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Price Match Guarantee at OffGrid Lux

At OffGrid Lux, we're committed to offering you the best prices online. That's why we have a Price Match Guarantee in place. If you find a lower price for the same product elsewhere, we'll match or beat it to ensure you get the best value.

For full details on our Price Match Guarantee, including eligibility criteria and how to request a price match, please click here to view our complete policy.

Shipping & Order Policy at OffGrid Lux

When you place an order, we confirm stock availability before charging your card. Orders typically process within 1-2 business days, and shipping is fast—most orders arrive within 4-7 days. We use reliable third-party carriers and provide tracking information promptly.

For more details, click here to view our full Shipping Policy.

Refunds & Returns at OffGrid Lux

We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.

For more info, check out our full Returns & Refunds Policy here.

The 5th Generation MRCOOL® DIY® 18k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler delivers powerful, energy-efficient heating and cooling for spaces up to 800 sq. ft. Designed for easy, tool-free installation, this system requires no professional experience, specialized tools, or costly service calls—making it a fast and affordable comfort solution for homeowners.

This model features the rugged DIYPRO® cable, which eliminates the need for traditional electrical conduit while offering added durability and protection against outdoor elements, animals, and harsh weather conditions. Installation is not only simplified but also built to last. You can manage your comfort your way. Use the included wireless remote, connect through the SmartHVAC app available on iOS and Android devices, or control the system using voice commands via Amazon Alexa and Google Assistant. The Gold Fin® condenser coating enhances corrosion resistance, making the unit a great fit for coastal or high-humidity areas.

The system also includes advanced comfort features. Follow Me® technology senses the temperature around the remote and adjusts airflow accordingly, ensuring consistent comfort where you are. Dry Mode reduces humidity for better air quality and comfort. To protect your investment, MRCOOL® offers a strong 7-year compressor and 5-year parts warranty, and is also eligible for the MRCOOL® Care Program. Experience hassle-free installation, advanced features, and reliable year-round comfort with the MRCOOL® DIY® 18k Mini-Split Air Handler.

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.

Dimensions

8.9" D x 13.19" H x 42.52" W

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

Remote Control Included

Yes

UL Listed

Yes

ETL Listed

Yes
Energy Star Certified

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 Weight (Lbs)

35.49

Gross Depth (In)

17.68

Gross Height (In)

14.29

Gross Width (In)

46.73

Gross Weight (Lbs)

49.6
Brochure
Install Manual
Remote Manual
Warranty
Accessory Manual
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Excellent Customer Service

Questions? Give us a call +1(307) 248-722

Let customers speak for us

from 43 reviews
The staff at off grid luxury were great at keeping me updated on my order

The staff at off grid luxury were great at keeping me updated on my order.

Michael Hope

Very good

Jean
Eahora Electric Bike Juliet Pro II Dual 2200W Motor 220 Mile Range
Best

Best forever

IM
Milky Day Electric Cream Separator Milky Fj 350 EAR (115V)
Great Shopping Experience I had a great experience shopping with Offgrid Lux

Great Shopping Experience

I had a great experience shopping with Offgrid Lux. The product was exactly as described, the quality was excellent, and everything arrived in good condition. The ordering process was easy and the service was professional. I’m very happy with my purchase and would definitely shop with Offgrid Lux again. Highly recommended!

IM

Great communication and so far it’s great

Tom Davison
PECRON F3000LFP Portable Power Station 3600W 3072Wh
fast shipping

fast shipping, great prices compared to other websites!!!

Anonymous
on the ball

From day one when I ordered a eahora romeo 2 2025 off grid lux has been in constant contact . From shipping the bike to after care I haven't had issues at all . They even called me to check on an issue I had and I actually spoke to a person , who was great by the way . Customer service has fallen to the big internet conglomerates but I didn't feel that way with the purchase , they have really tried to take care of me and answered every question I've asked , even ones that are stated on the site . Im happy I went with them .I hope I can purchase other stuff in the future here .
The products won't be flawless but their customer service is . Thanks again Greg

greg decedue
Eahora Romeo Pro II 2025 Ebike 52V Dual 2000W Motors 200 Miles
If you are professional or a weekend smoker

If you are professional or a weekend smoker.this is a most have. One bit of advise learn the air

Eric Lister
Damaged upon arrival, stellar customer service

Mototec Raider, paid for assembly, arrived with flat tire, dangling cracked headlight, scratched and scuffed. Customer service very responsive and able to resolve issues and make it right. They answer the phone and actually talk to you!
Recommended!

Edmund Siragusa
Extra battery for Ecotric Leopard

I bought an extra battery to increase my ebike range. Of all the sites I looked at, I was sure this one would fit my battery mount because it was labeled correctly. Not true of other sites. They shipped quickly and the battery was packed properly. Good business--would easily buy from this site again.

Mitchell Stocker
Received product in a timely

Received product in a timely fashion

Daniel Marck
Amazing ribs

Well built and easy to operate and clean. Effortless cooking and amazing pork ribs.

Anonymous
Old Country BBQ Pits Insulated Gravity Fed Charcoal Smoker GF-L-34X40
Excellent customer service

The whole process from ordering through receipt with Off Grid Lux was seamless. They responded quickly to our initial questions and helped us decide on the best product to suit our needs. There was a small hiccup with the shipment delivery (the fault of the carrier) and Odd Grid Lux contacted the carrier immediately and had our issue resolved. We researched many vendors before deciding on Off Grid Lux and their pricing and customer service cannot be beat.

J. Pierson
Arkpax Ark Portable Power Station | 1500Wh | 1800W | IP67 Rated Water-Resistant and Dustproof

Love it

Curry
MotoTec Raven 60v 30ah 2500w Lithium Electric Scooter
Great company and was a little hesitant at first!

Was a little nervous at first but Christian was GREAT. Company honored everything stated, customer service top notch and Fantastic communication. Need to give them a try to see how they can service and help you!

Mike s.

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