MRCOOL Olympus Mini Split - 18K BTU, 20 SEER, Ductless Air Conditioner and Heat Pump Condenser with Ceiling Cassette Air Handler

MRCOOL Olympus Mini Split - 18K BTU, 20 SEER, Ductless Air Conditioner and Heat Pump Condenser with Ceiling Cassette Air Handler

SKU: MSO1-18K-C18

Sale price$2,121.00 Regular price$2,799.00
Save 24%

Air Handler Type Ceiling
Air Handler BTUs

Choose Line Set Lengths:

Air Handler 1 - 18K - Line Set:

Estimated delivery:
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  • 30-Day Return Policy⁺


MRCOOL Olympus Mini Split - 18K BTU, 20 SEER, Ductless Air Conditioner and Heat Pump Condenser with Ceiling Cassette Air Handler

The MRCOOL Olympus Mini Split bundle includes everything you need to heat and cool one room.

Bundle Includes:

  1. MRCOOL Olympus Hyper Heat 18K BTU, 20 SEER, Ductless Mini Split Air Conditioner and Heat Pump Condenser (O-HH-18-HP-C-230)

  2. MRCOOL Olympus 18K BTU, 1.5 Ton, Ductless Mini-Split Ceiling Cassette Air Handler (CASSETTE18HP-230)

MRCOOL Olympus Air Conditioner and Heat Pump Condenser

  • Power - 18K BTUs
  • Zones - Cool and heat one room in your home
  • SEER - SEER efficiency rating of up to 20
  • Installation by a licensed professional required where applicable
  • 7-Year Compressor, 5-Year Parts and 1-Year Remote warranty when registered and when installed by a licensed professional
  • High efficient 20 SEER 10.30 HSPF performance
  • R-410A environmentally friendly refrigerant
  • Energy Star certified: estimated national average annual operating cooling cost is 107 dollars based on AHRI certificate #204783917
  • Inverter variable speed compressor The new Olympus Hyper Heat systems include our SmartHVAC WiFi Control Module with improved setup and enhanced functionality for Apple and Android smart devices. Works with Amazon Alexa. Works with Google Assistant.

MRCOOL Ceiling Cassette Air Handler - 18K BTU - Quantity 1

  • Cannot be controlled with smartphone app.
  • Downflow air direction.
  • Variable speed.
  • 1.5 ton cooling capacity.
  • Flared line set connection.
  • 5 year parts warranty.
  • Power supply: 208-230 volts/60 Hz, 1-Phase.
  • Minimum circuit: 1.9 amps; maximum fuse: 15 amps.
  • Piping size liquidside/gasside: 1/4-in to 1/2 inch.
  • Energy Star, ETL Listed, AHRI Certified.


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Sale price$98.00 Regular price$149.00



14.29 in D x 27.64 in H x 33.27 in W


208-230 V



Cooling Capacity


Heating Capacity


Refrigerant Type


Max Lineset Length

98.42 ft


18K Air Handler

Product Dimensions

22.44 in L x 22.44 in W x 10.24 in H



Cooling Capacity

18000 BTU/H

Heating Capacity

18000 BTU/H




Install Manual


Owner Manual

Remote Manual

Warranty Doc

Air Handler


User Manual 

Remote Manual

Mini Split FAQ

What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq Ft.)*
Up to 375 Sq. ft
12K BTU Up to 500 Sq. ft
18K BTU Up to 750 Sq. ft
24k BTU Up to 1000 Sq. ft
36k BTU  Up to 1500 Sq. ft

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

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


Customer Reviews

Based on 23 reviews
Peter K. (Phoenix, US)
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, US)
Installed and working great

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

Nat R. (Odessa, US)
4 ton condensing unit

Very good delivery service installed and works like a Should

walter w. (Port Neches, US)
Old r22 unit, same capacity, worked better in temperature extremes

Product came packaged well, undamaged. Installation was difficult, followed instructions for suction line above coil on bilevel installation with coil above condenser. 108 inside house on startup, 103 ambient. First start, high pressure 500, low pressure 170, supply air temp 66 degrees. Very worried at first, but after house cooed down, everything within parameters. Researched 410a refrigerant, found out it looses efficiency exponentially during temperature extremes. My old r22 unit would supply 54 degree supply air in comparable operating conditions. EPA, government, a/c manufactures all lying to American public

justin N. (New York, US)
Well built

First time ever installing Mr cool unit was built very good it has a dc converted fan motor,came with a salt shelf type coating om inside of unit over all very impressed 5star system

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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