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MRCOOL 18000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, 5th Gen DIY - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space

  • Based on 15 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Sep 15
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Style: 18K


Features

  • Air Conditioner: 5th Generation DIY mini split air conditioner equipped with both cooling and heating capabilities with 18,000 BTUs and coverage up to 800 square feet; Perfect for home, office, or commercial use
  • Easy DIY Installation: No special tools, equipment, or training are required, thanks to pre-charged 25-foot Quick Connect line sets, making installation a breeze and completing in just a few hours
  • Low Noise, Efficient Performance: Combo unit operates quietly and efficiently to keep you comfortable without high energy costs
  • Cooling & Heating Convenience: With both heating and cooling capabilities, this combo unit is great as an HVAC for all-year-round use; Sleek design and neutral color allow this modern indoor unit to blend into any interior space

Description

Upgrade your home comfort with the 5th generation MRCOOL DIY 18K BTU, 22.5 SEER ductless Heat Pump system. Perfect for spaces up to 800 sq. ft., this energy-efficient system provides year-round heating and cooling, offering the ideal climate for your home. With an impressive 22.5 SEER rating, it’s Energy Star certified, ensuring both exceptional performance and energy savings. The MRCOOL DIY system comes with an 18K condenser, 18K air handler, and a 25 ft. pre-charged line set with R-454A refrigerant, making installation quick and hassle-free. No special tools or professional help are needed—the easy-to-use quick-connect line set allows you to complete the setup on your own. Customize your comfort with multiple modes, including heat, cool, dry (dehumidification), and sleep. The innovative "Follow Me" feature automatically adjusts the temperature based on the remote control’s readings, ensuring the perfect environment. Plus, with the Smart HVAC app, you can control your system from anywhere, making it even more convenient to manage your home’s climate. Enjoy reliable, high-efficiency comfort with the MRCOOL DIY 5th Gen system—your ideal solution for easy installation, energy savings, and year-round comfort.

Brand: MRCOOL COMFORT MADE SIMPLE


Capacity: 1.5 tons


Cooling Power: 18000 british thermal units


Special Feature: Dehumidifier, Remote Controlled, Sleep Mode, WiFi Enabled


Product Dimensions: 10"D x 40"W x 14"H


Start year: 2021


Seasonal Energy Efficiency Ratio (SEER): 22.5


Color: White


Voltage: 230 volts


Noise Level: 46 db


Cooling Power: 18000 british thermal units


Additional Features: Dehumidifier, Remote Controlled, Sleep Mode, WiFi Enabled


Color: White


Noise: 46 db


Inverter Type: Has Inverter


Installation Type: Split System


Compressor Type: rotary_scroll


Air Conditioner Application: residential, commercial


Voltage: 230 volts


Wattage: 4600 watts


Item Dimensions D x W x H: 10"D x 40"W x 14"H


Item Weight: 140 pounds


Window Opening Maximum Width: 20 inches


Window Opening Minimum Width: 20 inches


Control Method: Remote, Voice


Controller Type: App Control, Remote Control, Voice Control


Operating Mode: Cooling


BEE Star Rating: 1 Star


Brand Name: MRCOOL COMFORT MADE SIMPLE


Start Year: 2021


Model Name: DIY 5TH Gen 18,000 BTU 22.5 SEER2 Energy Star Ductless Mini-Split


Model Number: DIY-18-HP-WM-230D25O


Included Components: 25ft Install Kit 230V


Global Trade Identification Number: 53


UPC: 840255588553


Manufacturer: MRCOOL


Item Type Name: DIY 5th gen Energy Star


Warranty Description: 5-year Parts and 7 year Compessor


Seasonal Energy Efficiency Ratio (SEER): 22.5


Annual Energy Consumption: 4600 watts


Capacity: 1.5 tons


Floor Area: 750 square_feet


Room Type: Residential Room


Form Factor: Mini-Split


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • MRCOOL 18k 5th gen is a great unit.
Style: 18K
I have installed 5 MRCOOL units in my house and they work great. This last unit I’m waiting for the rain to clear out so I can finish the condenser install.
Reviewed in the United States on May 8, 2026 by TBJR8257

  • Great product
Style: 18K
Works perfect!
Reviewed in the United States on May 2, 2026 by Michael Savoy

  • Could not ask for more!
Style: 18K
This thing is AMAZING! We run a small business out of one of our garages. This makes it so nice when the temperatures reach 100° or 20°. It is amazingly fast, extremely quiet, and just the right size for what we needed.
Reviewed in the United States on July 22, 2025 by Ann O'Bryan

  • Defective connector
Style: 18K
i followed instructions to the letter. When i got to literally the very last connection to be made to complete the installation the two mating connectors would not connect. I tried for over an hour to even swap ends of the line to the connector on the other end and no go. I have to uninstall everything I've done, box it back up and send it back to amazon. I ask for a replacement, and they said that was not possible. That I could get a gift card of cash back from the first method of payment. So, I will have to start over from stop one on this project. Very disappointed in MRCOOL. ... show more
Reviewed in the United States on April 29, 2026 by Mike

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