The 4th Of July Savings Event Ends Tuesday July 8, 2025 7:00 am EST. Act Now
Free Shipping On Orders Over $1500
America's Leading Discount HVAC Supplier Since 2001 ...
and now, NASCAR Racing Sponsor
Ask an Expert
866 862 8922
Hours of Operation 8am - 8pm EST
11am - 8pm EST
- SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
- Heat pumps are all electric and good for mild and cold climates.
Mitsubishi 12000 BTU Mini Split AC Horizontal Ducted Indoor Unit And MHK2 [SEZ-AD12NL,MHK2] | R454B
- Indoor Unit: SEZ-AD12NL
- Controller: MHK2
Mini Split Sizing BTU Calculator
Use this Free & Easy Mini Split BTU Calculator to Select the Right Size Mini Split AC or Heat Pump for your Home.
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.
- SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
- Heat pumps are all electric and good for mild and cold climates.
As low as $2,122.28 was $2,260.20
Free Shipping
Over $1500
DELIVERY TIME 5-10 BUSINESS DAYS
EXCLUDING WEEKENDS AND HOLIDAYS
Professional Support Staff
GUARANTEED LOWEST PRICES
FREE
SHIPPING
OVER $1500
DELIVERY TIME
5 - 10 BUSINESS DAYS, EXCLUDING WEEKENDS AND HOLIDAYS
PROFESSIONAL
SUPPORT STAFF
ADD TO CART FOR
GUARANTEED LOWEST PRICES
0% Interest
Orders $3000+ offered at checkout
No Credit Needed
Bad credit/no credit is OK - offered at checkout
Orders over $2500 get a
7 night luxury resort stay
Mitsubishi 12000 BTU Mini Split AC Horizontal Ducted Indoor Unit | Low Static R454B
Model Number
SEZ-AD12NL
Dimensions
39" W x 27-9/16" D x 7-7/8" H
Documents
Warranty
Parts: 10 years
MHK2 Kit
Mitsubishi Wireless Remote Controller
Model Number
MRCH2
Dimensions
4-5/64" W x 1-1/16" D x 4-5/64" H
Documents
Mitsubishi Product Specifications Sheet
Warranty
Parts: 5 years
Mitsubishi Wireless Receiver
Model Number
MIFH2
Dimensions
1-3/4" W x 39/64" D x 3-3/32" H
Documents
Mitsubishi Product Specifications Sheet
Warranty
Parts: 5 years
Mitsubishi Cable For Wireless Receiver
Model Number
MRC2
Length
39-23/64"
Documents
Mitsubishi Product Specifications Sheet
Warranty
Parts: 5 years
SEZ-AD12NL Overview
These SEZ units can be used to heat or cool one or two rooms and are available in single-zone or multi-zone options. They’re designed to work with short duct runs and can be installed out of sight—in the attic, ceiling, under the floor, or behind a wall feature—making them a discreet and flexible choice for your home.
Features
- Built-in condensate lift mechanism
- Concealed horizontal-ducted unit: Concealed horizontal-ducted unit for applications with short duct runs
- Multi-zone: A multi-zone unit provides the temperature management of multiple zones within a building.
- Multiple control options, including the comfort app for remote access, third party interfaces, and both wired and wireless controllers
- Quiet operation: Quiet operation units are as quiet as a typical conversation, and most indoor units are whisper quiet.
- Ultra-thin body: 7-7/8” high
Mitsubishi Wireless Wall Mounted Remote Controller Kit MHK2 Series Overview
MRCH2 Wireless Redlink Remote Controller Specifications
- Touchpanel, Backlit, easy-to-read display
- New RedLINK™ 3.0 wireless technology
- User functions allow user to set:
- - On/Off
- - Operation modes: cool, heat, drying, and fan
- - Set temperature(separate dual set points for heat and cool)
- - Fan speed setting
- - Airflow direction
- Set temperature range limits (dependent on the system connected):
- - Cooling from 50° to 99°F
- - Heating from 40° to 90°F
- - Auto from 50° to 90°F with dual temperature setting
- MHK2 Scheduling options:
- - No Schedule
- - MO-SU = Every day the same
- - MO-FR, SA, SU = 5-1-1schedule
- - MO-FR, SA-SU = 5-2 schedule
- - Each Day = Everyday individual
- - Allow kumo cloud to be schedule holder
- Hold function
- Temporary or Permanent schedule override
- Lockout:
- - On, Off, Mode, FanSpeed, Setpoint, VaneDirection
- Day/Time display with a 12 or 24-hour clock
- Supports both Fahrenheit and Celsius
- RedLINK™ Wireless Connection Status
- Filter sign display
- Diagnostics: Displays and records error codes
- Adjustable auto mode deadband
- Space temperature off set adjustment
- Space humidity off set adjustment
- Hide (on screen only)
- - Indoor temperature, Indoor humidity
- Temperature Sensing Source
- MHK2
- Indoor Unit
- RedLINK Wireless Indoor Air Sensor(IAS)
- Average of MHK2 and RedLINK Wireless Indoor Air Sensor (IAS)
- IndoorHumiditySource
- MHK2
- RedLINK Wireless Indoor Air Sensor (IAS)
- Average of MHK2 and RedLINK Wireless Indoor Air Sensor (IAS)
- Improved indoor unit function code list
- Indoor unit type
- Expanded to 28 indoor unit codes
- Reset to factory default
- Uses two “AA” alkaline batteries (included)
- Dimensions: 4-5/64” H x 4-5/64” W x 1-1/16” D (104x104x27mm)
- Operating Ambient Temperature: 32° to 120° F (0° to 48.9° C)
- Operating Relative Humidity: 5% to 90%
MIFH2 WIRELESS RECEIVER SPECIFICATIONS:
- Included in MHK2 Kit
- Mounts next to or near indoor units to allow MRCH2 Remote Controller operation
- Connects to indoor unit control board with MRC2 Cable
- Dimensions: 3-3/32” H x 1-3/4” W x 39/64” D (74.8 x 44.4 x 15.4 mm)
- Operating Ambient Temperature:-40° to 165°F(-40° to 73.9°C)
- Operating Relative Humidity: 5% to 95%
MRC2 CABLE
- Included in MHK2 Kit in the MIFH2 box
- Connects MIFH2 Wireless Receiver to the CN105 connectoron indoor unit control board
- Length: 39-23/64"(1m)
- 1661