MRCOOL DIY 18,000 BTU 16 SEER Ductless Mini-Split Heat Pump w/ WiFi
Model: DIY-18-HP-C-230A / DIY-18-HP-WMAH-230A

Regular Price: $1,624.95

Special Price $1,528.00

This product has been discontinued

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

By: MRCOOL Model: DIY-18-HP-C-230A / DIY-18-HP-WMAH-230A ID: 2303

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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; MRCOOL Air Conditioning. 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. MRCOOL heat pump reviews are some of the best.

  • 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 25' 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

SKU DIY-18-HP-C-230A / DIY-18-HP-WMAH-230A
Manufacturer MRCOOL
Addl Features install this innovative ductless system easily.
Addl Features The system constantly monitors interior air temperature
Addl Features Precharged 410 Quick Connect Line sets.
Addl Features Sleep Mode easy to program to save money
Addl Features Horizontal louver will automatically keep the last position
Cooling BTU 18,000 BTU
Heating BTU 18,000 BTU
Refrigerant R410A
Liquid Line 1/4"
Suction Line 1/2"
Electrical 230 V. 1 Phase 60 Hz
Max Breaker Size 20 amps
Min. Breaker Size 15 amps
Tonnage 1.5 Ton
Mini-Split Type Wall Mounted
Height Indoor Unit: 12.56" Outdoor Unit: 21.81"
Width Indoor Unit: 38" Outdoor Unit: 31.5"
Depth Indoor Unit: 8.46" Outdoor Unit: 13.11"
Weight (in lbs) 120.0000
Warranty 7 Years on Compressor and 5 Years Limited Warranty with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information PROPOSITION 65 WARNING


6 Customer review(s)
Very pleased.
Actually installed unit 15 months ago so have been through a winter and summer cycle. I'm very pleased with unit - very quiet and does a good job of heating / cooling my detached 2 car plus garage / workshop. Only difficulity is maintaining Wi- Fi connection, and that is more likely due to location - detached garage with Wi-Fi extender.
Review by Russ / (Posted on 11/20/2018)
Easy install works great. Does defrost mode when really cold quite often
Review by Ken / (Posted on 11/12/2018)
Highly recommend
Easy to install. Good to have two sets of hands for the interior unit but do able alone. My electric bill went down using the 24000 btu unit instead of two small window AC units. And it does a much better job. The heat works well and is also much cheaper than running my oil furnace.
Review by Brandon / (Posted on 10/22/2018)
Don't hesitate
Very easy installation less than 2hrs by myself even going to town for electrical wire.installed unit ran electrical wire, connected copper lines,turned on end of story hadn't touched it since settings temp.can not hardly hear unit running very quiet.i will be installing more units throughout my house.i live in the south and it's handling the heat well
Review by Tim / (Posted on 10/10/2017)
Like it
Very good product. The AC works wonderful just waiting on heating season to see its full potential
Review by Don / (Posted on 9/25/2017)
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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February 07, 2019Tracy asked:

Will it heat with temperatures at or below 0F?

These units can produce heat to around 5 degrees. Thanks!

July 07, 2018Mike asked:

Are shorter than 25 ft line sets available ?

Unfortunately there are not shorter line sets. What most customers do with the excess is roll the line set together and tie it to the condenser. Thanks!

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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