MRCOOL DIY 18,000 BTU 16 SEER Ductless Mini-Split Heat Pump w/ WiFi

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  • MRCOOL 2nd Gen DIY Ductless Mini Split Installation Guide

Regular Price: $1,574.95

Special Price $1,457.00

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Model: DIY-18-HP-C-230A / DIY-18-HP-WMAH-230A
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The MRCOOL DIY series heat pump is the only ductless mini-split system on the market explicitly designed for amateur installation. You do not need any special tools or training to install this high efficiency heat pump. The line sets are precharged with R410A refrigerant with quick hook-up electrical connections and allows just about anyone to install a MRCOOL DIY mini-split system in their home in only a few short hours. If you want great air comfort without paying an arm and a leg for installation, you want an easy-to-use MRCOOL DIY series ductless heat pump system.

  • You can install this innovative ductless system without special tools, equipment, or training.
  • The system constantly monitors interior air temperature in order to deliver the maximum possible comfort.
  • Precharged 410 Quick Connect Line sets. These unique line sets are a cinch to get working. You’ll probably do it in less than 15 minutes.
  • We made Sleep Mode easy to program to save money, and let you sleep a little easier.
  • Power outage? Don’t worry, the MRCOOL DIY auto restart will have the unit running again in no time at all.
  • Live on the coast? Don’t worry, the condenser is built to resist long term corrosion.
  • When the MRCOOL DIY detects low coolant an alarm will sound to alert you to the problem. This will prevent damage to the compressor while you maintain high air comfort.
  • Horizontal louver will automatically move to the same position as you set last time the unit was turned on.
  • Two way draining connections further simplify installation and add flexibility.
  • Unlike any other ductless heat pump on the market, the MRCOOL DIY series mini-split system is specifically designed for easy, simple installation.
  • Most people can’t do their own electrical work, and that’s why the quick electrical connections on the MRCOOL DIY is a feature many will appreciate.
  • MRCOOL DIY temperature compensation technology helps keep you comfortable in any weather conditions.
  • Refrigerant leakage detection ensures your system remains operating efficiently without degradation due to undetected corrosion.
  • One of the most difficult aspects of typical heat pump installation is dealing with the refrigerant inside the coils. The MRCOOL DIY Series comes with precharged line sets avoiding one major obstacle to amateur installation in a single stroke.


Additional Information

SKUDIY-18-HP-C-230A / DIY-18-HP-WMAH-230A
Cooling BTU18,000 BTU
Heating BTU18,000 BTU
Liquid Line1/4"
Suction Line1/2"
Electrical230 V. 1 Phase 60 Hz
Max Breaker Size20 amps
Nominal Capacity1.5 Ton
HeightIndoor Unit: 12.56" Outdoor Unit: 21.81"
WidthIndoor Unit: 38" Outdoor Unit: 31.5"
DepthIndoor Unit: 8.46" Outdoor Unit: 13.11"
Weight (in lbs)120.0000
Warranty7 Years on Compressor and 5 Years Limited Warranty with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.



1 Customer review(s)
Great diy a/c
Easy to install! Great a/c
Review by Michael / (Posted on 3/23/2017)

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Product Q & A

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August 01, 2017Mark asked:

Length of line set? Can longer line sets be purchased?

The line set on this unit is 25 feet long. Unfortunately the line set cannot be made longer or shorter. Thanks!

April 17, 2017Ben asked:

How much square feet does this unit cover?

This unit will cover up to 750 sq ft of space. Thanks!

April 10, 2017Kyle asked:

How does the indoor fan modulate its speed? Also, how is the defrost managed?

It does modulate fan speed. Unless you turn the power off entirely the fan will run even once your temperature set point is met. It will run very slowly and silently and the outdoor compressor will be off. The indoor fan always runs when on to gather the ambient temperature of the room. It runs at a fraction of an amp. As for defrost it will turn on the cooling mode at very low fan with the air vane deflecting the slight cool away from the conditioned space until the outdoor coils are melted.

March 27, 2017Crystal asked:

Can two sets of line be paired together for longer installation

Unfortunately, you cannot use more than one line set. Thanks!

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