What's in this package
Every piece below is included in your system price — matched to optimize efficiency, power and compatibility. Tap a piece to see its full description, specs and manuals.
The MRCOOL® OLYMPUS E-STAR® 18k Series condenser delivers reliable heating and cooling for areas up to 800 square feet, making it an excellent choice for bedrooms, home offices, garages, and other mid-sized spaces. Its compact design allows for straightforward installation, even in tighter or less conventional areas. With built-in Wi-Fi and the MRCOOL® Smart HVAC app, you can effortlessly control temperature, fan speed, and other settings from your smartphone or tablet, no matter where you are.
Prefer more traditional control? Use the included remote control for quick, easy access to the system’s settings. Designed for energy efficiency, this unit features impressive SEER2 and EER2 ratings of 23.5 and 12.7, respectively, along with a HSPF2-4 rating of 10.8. These ratings help keep your energy costs low while maintaining consistent comfort.
Additionally, the outdoor fan operates at a quiet 58 dB, ensuring minimal disruption in your living space. The air handler uses R-454B refrigerant, an eco-conscious solution that provides excellent performance while reducing environmental impact. This system is also compatible with voice control via Amazon Alexa and Google Assistant, allowing for hands-free adjustments.
The MRCOOL® OLYMPUS E-STAR® 18k Series comes with a limited lifetime warranty, 7-year compressor coverage, and a 5-year parts warranty, guaranteeing long-lasting reliability, innovative technology, and peace of mind.
Features
- Installation by a licensed professional required where applicable 7-Year Compresser, 5-Year Parts warranty when registered and installed by a licensed professional R-454B environmentally friendly friendly refrigerant Energy Star Certified
Works With
- O-18-HP-WMAH-230C-O
- DUCT-18HP-230B-O
- CASSETTE18HP-230C-O
- Net Dimensions (In)
- 13.46 D x 26.5 H x 35.04 W
- Net Weight (Lbs)
- 99.87
- Gross Depth (In)
- 15.67
- Gross Height (In)
- 29.13
- Gross Width (In)
- 39.17
- Gross Weight (Lbs)
- 107.8
- Color
- White
- Max Coverage Area
- Up to 800
- Inverter
- DC
- Metering Device
- EXV + Throttle Valve
- SEER2
- Up to 21.4
- EER2
- Up to 12.5
- HSPF2-4
- 11
- HSPF2-5
- 8.5
- Tonnage
- 1.5
- Cooling Capacity (Btu)
- 18000
- Heating Capacity (Btu)
- 18000
- Cycle
- 60
- Compressor Motor Type
- Rotary
- Condenser Fan Motor Rpm
- 780/700/550
- Decibel Rating (Dba)
- 59
- Voltage (V)
- 208/230
- Phase
- 1
- Max Fuse Breaker (A)
- 20
- Min Circuit Ampacity (A)
- 19
- Refrigerant Type
- R-454B
- Refrigerant Volume (Oz)
- 55.38
- Max Lineset Length (Ft)
- 98.4
- Lineset Fitting Type
- Flare
- Liquid Line Size
- 1/4
- Suction Line Size
- 1/2
- Ul Listed
- Yes
- Csa Listed
- Yes
- Etl Listed
- Yes
- Energy Star Certified
- Yes
- Ahri Certified
- Yes
- Has Batteries
- Yes
- Contains Electronics
- Yes
- Contains Chemicals
- Yes
- Contains Compressed Gas
- Yes
- Proposition 65 Warning
- Yes
- Restricted States
- GU, PR, VI
- Base Warranty
- 5-Year Parts/7-Year Compressor
- Base Parts Warranty
- 5-Year
- Base Compressor Warranty
- 7-Year
- Base Remote Warranty
- 5 Year
- Registered Labor Warranty
- None
- Base Labor Warranty
- None
Enjoy peace of mind and reliable comfort with the MRCOOL® OLYMPUS ESTAR® 18k Series air handler, designed to efficiently heat and cool areas up to 800 square feet—making it an ideal choice for large rooms, offices, garages, and more. Thanks to its compact design, installation is fast and straightforward. Control your comfort from anywhere with the MRCOOL® Smart HVAC app, which allows Wi-Fi connectivity for remote access via your smartphone or tablet.
For added convenience, the unit also includes a wireless remote control, giving you flexible options to manage your indoor climate with ease. Engineered for energy efficiency, this system features a SEER2 rating of 23.5, EER2 of 12.7, and HSPF2-4 of 10.8, helping you lower your utility costs while staying comfortable year-round. With multiple fan speed settings and whisper-quiet operation at just 49 dB, it delivers powerful performance with minimal noise. Now using R-454B refrigerant, a more eco-friendly choice, this unit supports environmentally conscious living without sacrificing performance.
Enjoy seamless control options, including the smartHVAC app, wireless remote, and voice control compatibility with Amazon Alexa and Google Assistant, giving you personalized comfort at your fingertips.
Backed by an industry-leading warranty—including a limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty—the MRCOOL® OLYMPUS ESTAR® 18k Series air handler offers dependable performance, smart technology, and lasting comfort throughout the seasons.
Works With
- O-ES-18-HP-C-230C-O1
- MULTI4-27HP230C-O
- MULTI5-36HP230C-O
- MULTI6-48HP230C-O
- Net Dimensions (In)
- 9.69 D x 12.64 H x 40.31 W
- Net Weight (Lbs)
- 27.34
- Gross Depth (In)
- 12.8
- Gross Height (In)
- 15.75
- Gross Width (In)
- 43.11
- Gross Weight (Lbs)
- 36.6
- Mount Type
- Wall
- Color
- White
- Max Coverage Area
- Up to 800
- Number Of Speeds
- 5 (Variable)
- Oscillation
- Yes
- Tonnage
- 1.5
- Cycle
- 60
- Blower Motor Speeds
- 635.7/500.3/359/294.3/294.3
- Blower Motor Rpm
- 1190/994/896
- Decibel Rating (Dba)
- 49.5/45/38/31.5/19.5
- Decibel Rating Low (Dba)
- 19.5
- Decibel Rating High (Dba)
- 49.5
- Voltage (V)
- 208/230
- Phase
- 1
- Max Fuse Breaker (A)
- 15
- Min Circuit Ampacity (A)
- 3
- Refrigerant Type
- R-454B
- Lineset Fitting Type
- Flare
- Liquid Line Size
- 1/4
- Suction Line Size
- 1/2
- Filter Type
- Reusable
- Auxiliary Heater Included
- No
- Auxiliary Heater Available
- No
- Fan Only Option
- Yes
- Sleep Mode
- Yes
- Auto Cool
- Yes
- Wifi Compatibility
- Yes
- App Compatibility
- Yes
- Works With Ios
- Yes
- Works With Android
- Yes
- Remote Control Included
- Yes
- UL Listed
- Yes
- CSA Listed
- Yes
- ETL Listed
- Yes
- Has Batteries
- Yes
- Contains Electronics
- Yes
- Contains Chemicals
- Yes
- Contains Compressed Gas
- Yes
- Proposition 65 Warning
- Yes
- Restricted States
- GU, PR, VI
- Base Warranty
- 5-Year Parts
- Base Parts Warranty
- 5-Year
- Base Remote Warranty
- 5 Year
- Registered Labor Warranty
- None
- Base Labor Warranty
- None
MRCOOL Mini Split BTU Guide
Drawn to scale — 1 square = 2 × 2 ft
Customer Reviews
I needed to replace another unit that a previous contractor didn't do any part of that installation correctly, and the condensation line was leaking inside the house, running down the wall since that installation!! The indoor coil was 1-1/2" out of level, the line set wasn't wrapped, the electrical was tapped into the same circuit as the garage light and outlets...it was a mess.
It took me more time to demo the old unit out than to install the one I bought from you.
Thank you.
Very pleased with the price, delivery, ease of installation, and above all during this heatwave it is working excellently.
I ordered a 2 zone unit for the bedrooms in our home. It took a few months to arrive (manufacturer issue, nothing to do with HOD, and we were contacted on more than one occasion with an order update which was much appreciated!), but when it did arrive was very easy to install. Both the heat and AC function work perfectly, and our family is very happy!
I ordered a HVAC system and it arrived in a timely manner and with no apparent issues. I thought the system was defective once installed but it was the installers fault who wired it wrong. My only issue would be the fee (30% I believe) to return a defective item within the 30 day return policy. If it is defective the customer shouldn't have to pay a fee to return an item that is not operating as designed. Other than that this is a good company.
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!
