HOT ! MRCOOL® DIY® Series 5th Gen OuttaSight® 18K BTU 230V One-Way Ceiling Cassette

High-Capacity 18K Ceiling Comfort with a Clean, Flush Finish

The MRCOOL® DIY® Series 5th Gen OuttaSight® 18K BTU One-Way Ceiling Cassette delivers dependable heating and cooling for spaces up to 800 sq. ft. while keeping walls and floors clear. It installs flush between 16\" ceiling joists and connects to MRCOOL DIY systems using pre-charged Quick Connect® line sets—no vacuuming or specialized HVAC tools required.

Important Notes

• Designed for use with MRCOOL® DIY® multi-zone condensers only

• Pre-charged with R-454B refrigerant

Low-profile and easy to hide

Low-profile installation that disappears into your space while delivering dependable heating and cooling.

Key Features and Benefits

• 
  18,000 BTU Heating & Cooling - Sized for larger rooms up to 800 sq. ft., including open living areas, studios, and offices.


• 
  Flush One-Way Ceiling Design - Fits cleanly between 16\" joists (including I-joists) to maintain a modern, low-profile look.


• 
  DIY Installation Compatibility - Pairs with MRCOOL® DIY® Quick Connect® line sets pre-charged with R-454B, eliminating vacuum pumps and licensed HVAC requirements.


• 
  Quiet Operation - Designed for low sound output, suitable for bedrooms and shared spaces.


• 
  Flexible Control Options - Control via included remote, SmartHVAC app, or voice commands using Amazon Alexa and Google Assistant.


• 
  Reusable Filtration with Easy Access - Elevation function lowers the panel for straightforward filter cleaning and routine maintenance.


• 
  Long-Term Warranty Coverage - Backed by 5-year parts, 7-year compressor, and limited lifetime compressor warranty with registration.

System Specifications

• 
  Cooling Capacity (BTU): 18,000


• 
  Heating Capacity (BTU): 18,000


• 
  Voltage Requirements: 208–230


• 
  Phase: 1


• 
  Cycle: 60


• 
  Max Fuse Breaker (A): 15


• 
  Min Circuit Ampacity (A): 3


• 
  Rated Load: 1.2


• 
  Decibel Rating (dBA): 41.5


• 
  Decibel Rating (Low) (dBA): 26


• 
  Decibel Rating (High) (dBA): 44


• 
  CFM: 400 / 352 / 300 / 207 / 207


• 
  Blower Motor RPM: 1344 / 1184 / 1024


• 
  Filter Type: Reusable


• 
  Fan Only Option: Yes


• 
  Quiet Mode: 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


• 
  Registered Warranty: Limited Lifetime Compressor


• 
  Base Warranty: 5-Year Parts / 7-Year Compressor


• 
  Base Parts Warranty: 5-Year Parts


• 
  Registered Compressor Warranty: Limited Lifetime Compressor


• 
  Base Compressor Warranty: 7-Year Compressor


• 
  Has Batteries: Yes


• 
  Contains Electronics: Yes


• 
  Contains Chemicals: Yes


• 
  Contains Aerosol: Yes


• 
  Contains Compressed Gas: Yes


• 
  Proposition 65 Warning: Yes


• 
  Restricted States: GU; PR; VI


• 
  Net Depth (in): 13.19


• 
  Net Height (in): 8.98


• 
  Net Width (in): 50.31


• 
  Net Weight (lbs): 45


• 
  Gross Depth (in): 22.48


• 
  Gross Height (in): 22.64


• 
  Gross Width (in): 57.60


• 
  Gross Weight (lbs): 88

Frequently Asked Questions