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When using a mini split sizing calculator for rooms below a conditioned space, apply an additional .7 factor to your final Btu outcome.
For example, if your Btu requirement via this calculator is 18,000 Btu's: 18,000 Btu's x .7 factor = 12,600 Btu's required. When in doubt, it is okay to go up a size or two. Unlike standard non-variable systems, The mini split inverter technology allows the system to adjust to the actual room requirements in both heating and cooling.
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This system includes one Daikin AURORA MXT multi-zone inverter-driven heat pump condenser rated for up to 24,000 BTUs and supports up to 2 compatible indoor units. Indoor units must be selected from Daikin-approved combinations for the included outdoor condenser. Approved indoor unit combinations may exceed the condenser's nominal BTU rating.
Model Number
3MXTH24AVJU9
Dimensions
43-5/16" W x 18-1/8" D x 34-1/4" H
Documents
Warranty
Parts: 12 years
AHRI Number
Mixed: 218043338
Ducted: 218043337
Non-Ducted: 217747239
SEER2
Mixed: 17.5
Ducted: 16
Non-Ducted: 19
The Daikin 3MXTH24AVJU9 AURORA Series outdoor condenser is designed for homeowners who need reliable ductless heating and cooling performance in colder climates. This 24,000 BTU multi-zone heat pump system supports up to three indoor units while delivering dependable comfort even during extreme winter conditions.
Featuring a factory-installed drain pan heater, advanced inverter compressor technology, and Daikin’s cold-climate engineering, the 3MXTH24AVJU9 maintains heating performance in temperatures as low as -13°F. Its energy-efficient R-32 refrigerant platform and quiet operation make it an ideal solution for modern homes seeking zoned comfort and lower energy costs.
Compatible Indoor Unit Models: CTXV07AVJU9, FTXC09AXVJU, FTXC12AXVJU, FTXC18AXVJU, FTXC24AXVJU
The Daikin Wall-Mount Mini-Split Indoor Units are designed to deliver efficient heating and cooling performance for residential zoned comfort applications. Available in capacities ranging from 7,000 BTU to 24,000 BTU, these wall-mounted indoor units combine advanced inverter technology, quiet operation, and precise temperature management to provide dependable year-round comfort without the need for traditional ductwork.
Designed for use with compatible Daikin ductless heat pump applications, these indoor units offer energy-efficient performance, reliable airflow distribution, and a sleek low-profile appearance that complements modern living spaces. Ideal for bedrooms, offices, living rooms, additions, garages, and other residential comfort zones, each unit includes a compatible wireless remote controller for convenient day-to-day comfort adjustments.
Compatible Indoor Unit Models: CDMA07AVJU9, FDMA09AVJU9, FDMA12AVJU9, FDMA15AVJU9, FDMA18AVJU9, FDMA24AVJU9
The Daikin AURORA Medium Static Horizontal Ducted Air Handler and Control Package is designed to provide efficient heating and cooling performance for residential and light commercial zoned comfort applications. Available in capacities ranging from 7,000 BTU to 24,000 BTU, these concealed ducted indoor units combine advanced inverter technology with medium static pressure airflow performance to deliver reliable year-round comfort while keeping HVAC equipment hidden from view.
This package combines a compatible Daikin horizontal ducted air handler with a matching controller to help simplify equipment selection and ensure the necessary indoor comfort components are purchased together. Compatible with select Daikin AURORA heat pump applications, these air handlers offer installation flexibility, customized airflow distribution, quiet operation, and energy-efficient performance for bedrooms, offices, additions, living spaces, garages, and open floor plans.
Model: BRC082A43
The Daikin BRC082A43 Wireless Remote Controller gives homeowners and business owners simple, convenient control of compatible Daikin concealed ducted indoor units from anywhere in the room. Designed for use with select Daikin FDMQ concealed ducted ceiling systems, this wireless controller allows users to easily adjust temperature settings, operating modes, fan speeds, and timer functions for improved comfort and energy efficiency.
Featuring an easy-to-use digital interface and wireless operation, the BRC082A43 helps simplify day-to-day HVAC control without the need for a wired wall-mounted thermostat. This controller supports multiple operating modes including Cool, Heat, Dry, Fan, and Auto modes, making it a flexible solution for year-round indoor comfort in residential and light commercial applications. :contentReference[oaicite:0]{index=0}
Who installs the AC unit after I purchase it?
ACDirect does not yet provide installation services directly. However, most of our customers successfully arrange installation through local licensed HVAC contractors. These systems are designed for professional installation and typically include the components your installer will need.
Here’s how it works:
Note:
Please be aware if you choose to install HVAC equipment yourself and don’t possess proper HVAC licensing, you will void the manufacturer’s factory warranty. If you are capable of a factory-compliant installation yourself, you will need a licensed HVAC contractor to sign off on your work, fully confirming factory-compliant workmanship.
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