❄️ MRCOOL® DIY® 5th Gen 18K BTU Ductless Mini-Split Heat Pump System
All-Season Comfort, Without the Hassle — For Up to 800 Sq. Ft.
🔧 DIY Installation. Professional Performance.
Tired of high energy bills, uneven temperatures, or loud, clunky AC units? The 5th Generation MRCOOL® DIY® 18K BTU Mini-Split delivers powerful, whisper-quiet heating and cooling without ductwork or expensive installers. Whether you're cooling a garage, workshop, bedroom, or studio space, this unit offers the comfort you want—with the freedom you need.
🚫 Say Goodbye To:
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Hot & Cold Spots: These air conditioners have zoned, direct airflow for consistent comfort
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Sky-High Utility Bills: Mr Cool's inverter technology allows for premium energy savings
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Bulky Window Units or Loud Central Systems: Mr Cool units have a quiet, sleek, and modern design
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Costly HVAC Installs: These mini splits are designed for true DIY setup with no special tools required
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Limited Control: Control your climate your way—with remote, smartphone app, or voice commands
✅ Say Hello To:
🧊 Powerful, Efficient Comfort
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Cools and heats spaces up to 800 sq. ft.
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18,000 BTU cooling and heating capacity
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SEER2 22.5 | HSPF2 11.5 for exceptional year-round efficiency
🛠️ DIY-Friendly Setup
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Includes 25-foot QuickConnect® line set, pre-charged with R-454B refrigerant
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No vacuuming or special tools needed
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DIYPRO® cable replaces bulky electrical conduit and resists weather, pests, and wear
📱 Smart Controls, Maximum Flexibility
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Control via remote, SmartHVAC app (iOS & Android), or voice commands with Alexa or Google Assistant
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Follow Me® mode adjusts based on where the remote is in the room
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Auto Restart remembers your settings during power outages
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Timer, Dry Mode, and Auto Mode help maintain perfect comfort and efficiency
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Anti-mildew mode prevents moisture buildup inside the unit
💨 Quiet, Comfortable Operation
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Indoor unit runs as low as 19 dBA – nearly silent
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5 fan speeds and oscillation for customizable airflow
🌊 Built to Last
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Gold Fin® corrosion-resistant condenser – perfect for coastal or high-humidity environments
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Backed by an industry-leading warranty:
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Limited Lifetime on compressor
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7 years on compressor
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5 years on parts
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📏 Product Specifications
Air Handler
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Mount Type: Wall-mounted
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Voltage: 208/230V
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Coverage Area: Up to 800 sq. ft.
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Noise Level: 19 – 54.5 dBA
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Filter: Reusable
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ENERGY STAR® Certified: Yes
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Dimensions: 42.52” W × 13.19” H × 8.9” D
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Weight: 35.49 lbs
Compressor (Outdoor Unit)
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Compressor Type: DC Inverter Rotary
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Cooling & Heating Capacity: 18,000 BTU
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Max Line Set Length: 98.4 ft
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Refrigerant: R-454B (44.8 oz)
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SEER2: 22.5
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Noise Level: 58.5 dBA
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ENERGY STAR® Certified: Yes
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Dimensions: 35.04” W × 26.5” H × 13.46” D
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Weight: 93.48 lbs
🏡 Who Is This System Perfect For?
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Homeowners looking to upgrade comfort in smaller to mid-size rooms
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DIYers wanting a stress-free, cost-effective solution
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Anyone renovating a guest room, office, or basement space
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Remote workers who need a quiet and efficient climate control solution
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Families wanting individualized comfort zones without running central HVAC
📦 What’s Included:
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(1) MRCOOL® 18K BTU Indoor Air Handler
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(1) MRCOOL® 18K BTU Outdoor Condenser
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(1) 25-foot QuickConnect® Line Set (Pre-charged)
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DIYPRO® Electrical Cable
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Remote Control
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Installation Accessories & Manuals
🛒 Upgrade your comfort, not your stress.
Order the MRCOOL® DIY® 18K BTU Mini-Split today and take full control of your home’s climate—no ducts, no headaches, no compromises.
Product Specifications
Air Handler Specifications:
| Feature | Specification |
|---|---|
| Tonnage | 1.5 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 3 |
| Mount Type | Wall |
| Color | White |
| Max Coverage Area | 800 sq. ft. |
| Decibel Rating Low (dBA) | 19 |
| Decibel Rating High (dBA) | 54.5 |
| Number of Speeds | 5 |
| Oscillation | Yes |
| 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 |
| Quiet 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 |
| ETL Listed | Yes |
| ENERGY STAR Certified | Yes |
| AHRI Certified | Yes |
| Registered Warranty | Extended Limited Lifetime* |
| Base Parts Warranty (Years) | 5 |
| Base Compressor Warranty (Years) | 7 |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Aerosol | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Net Depth (in) | 8.9 |
| Net Height (in) | 13.19 |
| Net Width (in) | 42.52 |
| Net Weight (lbs) | 35.49 |
| Gross Depth (in) | 17.68 |
| Gross Height (in) | 14.29 |
| Gross Width (in) | 46.73 |
| Gross Weight (lbs) | 49.6 |
| Feature | Specification |
|---|---|
| SEER2 | 22.5 |
| EER2 | 13.7 |
| HSPF2-4 | 11.5 |
| HSPF2-5 | 8.5 |
| Tonnage | 1.5 |
| Cooling Capacity (BTU) | 18,000 |
| Heating Capacity (BTU) | 18,000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 20 |
| Min Circuit Ampacity (A) | 18 |
| Color | White |
| Zone Capacity | 1 |
| Refrigerant Type | R-454B |
| Refrigerant Volume (oz) | 44.8 |
| Decibel Rating (dBA) | 58.5 |
| Inverter | DC |
| Line Set Length (ft) | 25 |
| Max Line Set Length (ft) | 98.4 |
| Liquid Line Size | 1/4" |
| Suction Line Size | 1/2" |
| Compressor Motor Type | Rotary |
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | No |
| Fan Only Option | Yes |
| Quiet Mode | Yes |
| Auto Cool | Yes |
| WiFi Compatibility | Yes |
| App Compatibility | Yes |
| Works with iOS | Yes |
| Works with Android | Yes |
| UL Listed | Yes |
| ETL Listed | Yes |
| ENERGY STAR Certified | Yes |
| AHRI Certified | Yes |
| Registered Warranty | Extended Limited Lifetime* |
| Base Parts Warranty (Years) | 5 |
| Base Compressor Warranty (Years) | 7 |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Aerosol | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Net Depth (in) | 13.46 |
| Net Height (in) | 26.5 |
| Net Width (in) | 35.04 |
| Net Weight (lbs) | 93.48 |
| Gross Depth (in) | 18.11 |
| Gross Height (in) | 29.53 |
| Gross Width (in) | 40.55 |
| Gross Weight (lbs) | 114.2 |
