The MRCOOL® Advantage 5th Generation 18,000 BTU Mini-Split Heat Pump offers reliable, high-efficiency heating and cooling for rooms up to 800 sq. ft. Designed for year-round comfort, this ductless system features a WiFi-compatible indoor air handler and a corrosion-resistant outdoor condenser with Gold Fin® protection. It uses next-generation R-454B refrigerant, which provides significant environmental benefits with 80% lower Global Warming Potential than traditional R-410A.

With a SEER2 rating of 19.2 and HSPF2-4 rating of 9.6, this unit balances performance and energy savings. Remote access is available through the MRCOOL® SmartHVAC app and via voice control with Google Assistant and Amazon Alexa. The included remote features Follow Me® technology, sensing your location for a personalized comfort experience.

Additional features include quiet operation, built-in leak detection, timer mode, and advanced diagnostics. A professional HVAC technician must install the system to maintain warranty coverage and ensure proper performance.

Key Features

• Smart Control Integration – Built-in WiFi supports Amazon Alexa, Google Assistant, and the MRCOOL® SmartHVAC app.
  

• High Efficiency – Rated at 19.2 SEER2 and 9.6 HSPF2-4 for strong year-round energy savings.
  

• Follow Me® Function – Remote control detects your location to deliver custom comfort where you are.
  

• Quiet Operation – Indoor operation as low as 19 dB(A), ideal for bedrooms and offices.
  

• Eco-Friendly Refrigerant – R-454B refrigerant has 80% lower GWP compared to R-410A.
  

• Gold Fin® Condenser Protection – Resists corrosion in humid or coastal environments.
  

• Low Ambient Operation – Operates in temperatures as low as 5°F for both heating and cooling.
  

• Built-In Diagnostics – Includes timer mode and refrigerant leak detection for efficient, safe performance.
  
  Professional Installation Required – Must be installed by a licensed HVAC professional.
  

• Warranty Coverage – 1-year parts and remote, 2-year compressor; optional lifetime compressor coverage with MRCOOL® Care.

Specifications

• Brand: MRCOOL®
  

• Series: Advantage 5th Generation
  

• Product Type: Single-Zone Ductless Mini-Split Heat Pump
  

• Voltage: 230V, 1 Phase, 60 Hz
  

• Cooling Capacity: 18,000 BTU
  

• Heating Capacity: 18,800 BTU
  

• SEER2 Rating: 19.2
  

• EER2 Rating: 10.8
  

• HSPF2-4 Rating: 9.6
  

• HSPF2-5 Rating: 7.5
  

• Coverage Area: Up to 800 sq. ft.
  

• Zone Capacity: 1
  

• Outdoor Operating Temperature (Cooling): 5°F – 122°F
  

• Outdoor Operating Temperature (Heating): 5°F – 86°F
  

• Refrigerant Type: R-454B
  

• Refrigerant Volume: 40.57 oz
  

• Liquid Line Size: 1/4"
  

• Suction Line Size: 1/4"
  

• Max Line Set Length: 98.4 ft.
  

• Indoor Noise Level (Hi/Mi/Lo): 50.5 / 45 / 36 / 24 / 19 dB(A)
  

• Outdoor Noise Level: 56.0 dB(A)
  

• Compressor Type: Rotary
  

• Inverter: DC
  

• Condenser Dimensions: 31.69" W x 12.99" D x 21.81" H
  

• Air Handler Dimensions: 37.99" W x 8.46" D x 12.56" H
  

• Condenser Weight: 72.31 lbs
  

• Air Handler Weight: 24.47 lbs
  

• Max Fuse Breaker: 20A
  

• Min Circuit Ampacity: 15A
  

• Wifi Compatibility: Yes
  

• App Compatibility: Yes
  

• Works with iOS: Yes
  

• Works with Android: Yes
  

• Remote Control Included: Yes
  

• Fan Only Option: Yes
  

• Quiet Mode: Yes
  

• Auto Cool: Yes
  

• Certifications: UL Listed, CSA Listed, ETL Listed, AHRI Certified
  

• Warranty: 1-Year Parts, 2-Year Compressor, 1-Year Remote; Optional Lifetime Compressor Coverage with MRCOOL® Care Program

BTU Size Chart

Which BTU rating should I choose?

• The appropriate BTU rating depends on the size of the space you need to heat or cool.
• A higher BTU indicates greater heating and cooling capacity, allowing the air handler to effectively condition larger areas.

*Ceiling height, insulation quality, and local climate can all affect the actual coverage area. For instance, an uninsulated space will need more BTUs to maintain comfort compared to a well-insulated room.

Shipping & Returns

Shipping Policy

• Free Shipping on All Orders – We provide free standard delivery on all orders within the contiguous U.S.

• Ground Shipping for Smaller Items – Accessories and lighter products ship via standard ground carriers such as FedEx, UPS, or similar.

• Freight Delivery – Large items (HVAC/Heaters) ship via LTL freight. Drivers deliver to the curbside only; they cannot bring items into your home or garage.

• Tracking Information – Tracking is typically provided within 1 business day once your order ships.

• Carrier Updates – Once tracking is issued, allow 1–2 business days for the carrier to populate shipment details.

• More Information – Full details can be found on our Shipping Policy page.

Return Policy

• 30-Day Return Window – Return requests must be submitted within 30 days of delivery; requests after this period cannot be accepted.

• Inspect Upon Delivery – Visible damage must be noted on the driver's paperwork. Report all damage within 24 hours to qualify for a replacement.

• Return Condition Requirements – Items must be unused, uninstalled, and in original packaging, including all boxes, crates, or pallets.

• Restocking Fees – Restocking fees of 25–35% apply to most brands; see full policy for details.

• Non-Returnable Items – Accessories, small components (remotes, line sets), and custom-finish items are non-returnable.

• Full Details – See our Return & Refund Policy page for complete guidelines.