Designed with professionals in mind, the MRCOOL® Advantage 5th Generation 9,000 BTU Ductless Mini-Split delivers powerful, energy-efficient comfort for spaces up to 400 sq. ft. Ideal for bedrooms, offices, or nurseries, this system features a WiFi-enabled indoor air handler and a corrosion-resistant outdoor condenser for quiet, high-performance operation.

This system comes equipped with a 16-foot pre-charged line set using eco-friendly R-454B refrigerant, offering ~80% lower Global Warming Potential than R-410A. With SmartHVAC technology and voice compatibility, you can control your climate from anywhere using the mobile app, Amazon Alexa, or Google Assistant.

The included remote features Follow Me® functionality, allowing the unit to sense temperature near the user for optimal comfort. With built-in diagnostics, leak detection, Auto Restart, and Low Ambient Cooling down to 5°F, the Advantage system delivers reliable year-round performance.

Installation by a licensed HVAC professional is required to maintain safety and warranty eligibility. This system is backed by a 1-year parts warranty, 2-year compressor warranty, and eligibility for a Limited Lifetime Replacement Warranty with MRCOOL® Care Program enrollment.

Key Features

• Powerful Whole-Room Coverage – Heats and cools up to 400 sq. ft., ideal for bedrooms, home offices, and small shared spaces.

• Smart Control Integration – Control your system via the MRCOOL® SmartHVAC app, or with voice commands through Amazon Alexa and Google Assistant.

• Eco-Friendly Refrigerant – R-454B offers 80% lower GWP than R-410A, reducing environmental impact without sacrificing performance.

• High Efficiency Performance – Rated at 21.5 SEER2 and 9.0 HSPF2-4 for dependable energy savings all year long.

• Quiet Operation – Designed for low-noise performance with indoor operation as quiet as 18 dB(A) and 52.5 dB(A) outdoors.

• Gold Fin® Corrosion Protection – Extends condenser life in harsh or coastal conditions by preventing corrosion from salt and moisture.

• Follow Me® Function – Remote senses temperature at your location for customized climate control.

• Built-In Safety Features – Includes timer mode, refrigerant leak detection, and Auto Restart after power loss.

• Low Ambient Cooling – Operates in outdoor temperatures as low as 5°F, ideal for year-round use in server rooms or greenhouses.

• Warranty Protection – Backed by 1-year parts, 2-year compressor, and eligibility for Limited Lifetime Warranty with MRCOOL® Care Program.

Specifications

• Brand: MRCOOL®

• Series: Advantage 5th Generation

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

• Voltage: 115V, 1 Phase, 60 Hz

• Cooling Capacity: 9,000 BTU

• Heating Capacity: 10,000 BTU

• SEER2 Rating: 21.5

• HSPF2-4 Rating: 9.0

• HSPF2-5 Rating: 7.0

• Coverage Area: Up to 400 sq. ft.

• Refrigerant Type: R-454B (pre-charged)

• Refrigerant Charge Volume: 21.52 oz

• Piping Size (Liquid/Suction): 1/4" – 3/8"

• Air Handler Model: A-09-HP-WMAH-115D-O

• Air Handler Dimensions (WxDxH): 28.43” x 7.36” x 11.42”

• Air Handler Weight (Net/Gross): 17.42 / 22.93 lbs

• Air Handler Noise Level (Turbo/Hi/Mi/Lo/Si): 43.0 / 37.5 / 33.5 / 25.0 / 18.0 dB(A)

• Air Handler Min Circuit Ampacity: 3.0 A

• Air Handler Max Fuse (Breaker): 15.0 A

• Condenser Model: A-09-HP-C-115D-O

• Condenser Dimensions (WxDxH): 30.12” x 11.93” x 21.85”

• Condenser Weight (Net/Gross): 56.66 / 62.17 lbs

• Condenser Noise Level (Hi): 52.5 dB(A)

• Condenser Min Circuit Ampacity: 18.0 A

• Condenser Max Fuse (Breaker): 20.0 A

• Control Options: Remote, SmartHVAC App, Amazon Alexa, Google Assistant

• Low Ambient Cooling: Down to 5°F

• Certifications: AHRI Certified, NEEP ccASHP Listed, CEE Tier 1 – North, UL Listed, ETL Listed

• Warranty:

  • Parts: 1 Year

  • Compressor: 2 Years

• Extended Limited Lifetime Warranty: Eligible with MRCOOL® Care Program registration

• Environmentally Friendly: Yes – R-454B low-GWP refrigerant

• Auto Restart: Yes

• Timer Function: Yes

• Indoor Display: Yes

• Indoor Unit Finish: Glossy white

• Warranty Registration Required: Yes

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 3–5 business days after your order is placed.

• 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.