MRCOOL Universal 36K BTU, 2-3 Ton, 18 - 20 SEER, R410A DC Inverter Air Handler - Multiposition (MDUI18024036)

MRCOOL Universal 36K BTU, 2-3 Ton, 18 - 20 SEER, R410A DC Inverter Air Handler - Multiposition (MDUI18024036)

SKU: MDUI18024036

Sale price$1,472.00 Regular price$1,999.00
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MRCOOL Universal 36K BTU, 2-3 Ton, 18 - 20 SEER, R410A DC Inverter Air Handler - Multiposition (MDUI18024036)

The 2 to 3 Ton MrCool Universal Air Handler is designed for maximum compatibility with the MrCool Universal 2 to 3 Ton Condenser. Properly paired, this air handler can deliver superior home comfort performance in summer, winter, and every season in between. It is ideal for homeowners who want to boost operating efficiency while reducing their dependence on increasingly expensive resources like heating oil. Plus, it is both a quiet and safe solution.



  • 2 Ton Mode: 20 SEER, 3 Ton Mode: 18 SEER
  • Ultra Wide Operating Temperature Range
  • Quick Connect, Flared, & Sweat fittings allow for universal installation
  • Multi-positional installation (compatible with upflow and horizontal applications)
  • Accommodates up to a 10kW Backup Heat Strip
  • Factory Charged R410
  • ETL and AHRI certified


Dimensions  21.3-in L x 21.3-in W x 48.2-in H
Air Flow Direction Horizontal, Upflow
Configuration Floor Mounted
Blower Motor High Efficiency
Cooling Capacity 2 Ton, 2.5 Ton, 3 Ton
Electrical Phase 1-Phase
Heat Strip Compatibility Up to 10 kW
Line Set Connection Type Quick Connect, Flared, or Sweat
Liquid Line Size 3/8 inch
Max Overcurrent Protection 15 amps
Product Height (in) 48.25
Product Length (in) 21.3
Product Width (in) 21.3
Series Universal
Suction Line Size 3/4 inch
System Application Type Central Split Systems
Voltage 240
Warranty 10 Year Parts
Weight (lbs) 156.50
Color  Gray
CFM  900
Fan Speeds

Variable Speed

Inner Package





169.80 lb

EER 12.5


Shipping & Returns

*Shipping Policy

  • Shipping is Free
  • Large appliances ship via Freight Curbside shipment. Meaning the carrier will drop off your item on your property not inside your home. The courier company will call ahead of time to schedule a drop off date
  • For the full details, visit our Shipping Page

Return/Refund Policy
  • 30-Day Return Policy
  • If your order arrives damaged, we will exchange you for a new one. Damage must be reported within 24 hours. 
  • For more details, visit our Return Policy Page


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Customer Reviews

Based on 27 reviews
Peter K. (Phoenix, AZ)
Pretty Easy Install and Works Great!

Installed my own central HP system. It was a bit of work but nothing beyond a person with basic mechanical and electrical skills. It took me a while because I had to remove the existing electric forced air furnace from a pretty tight place. Some custom sheet metal work and a bit of custom electrical too. Worked perfectly when powered up and I actually like the thermostat provided, although I wish it was clearer how to set up a temperature set-back schedule. Pre-charged refrigerant piping was something new and I liked that too. The best thing is that my electric utility forked out $4,000 and that paid for the unit!

WesD (Chicago, IL)
Installed and working great

Installed with ceiling cassettes... Quiet and keeping us cool so far !

Scott S. (Saint Paul, MN)
Excellent price, great service

No muss, no fuss. 1 call about extended warranty which I declined. Otherwise just straight forward drop shipment to curb, on time and as expected. All items in perfect shape, no breaks or rips in boxes.
The items (Mr. Cool 27k 3 head 9k/9k/12k DIY) installed great, easy to follow instructions. 1 wall insert was slightly cracked due to no packing material in the line box, but I it taped up and it inserted fine. Could have used more custom sized lines for fitting but otherwise very happy with product.

Ian N. (Los Angeles, CA)
Easy to install. Works great

Needed a 2-zone for my garage and room we built above the garage. I originally thought I would have to buy 2 separate mini splits, but the HOD rep explained I could get a multi zone set up.
I got the mrcool 2-zone. Was easy to to install. Works great at both cooling and heating.
I recommend Home Outlet Direct to all my friends, thank you for the help.

Chris W. (Miami, FL)
Love my new mini split

Ordered a MRCOOL mini split from Home Outlet Direct. I purchased a 3 zone set up, so it could cool 3 rooms in my home. All items arrived quickly. Easy to install as well and working great. Overall I had a great experience and would recommend Home Outlet Direct

Why buy a MRCOOL from Home Outlet Direct?

- We are an authorized MRCOOL dealer

- Industry leading sales and customer service

- Thousands of happy customers

Real Customers. Real Results.

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