12,000 BTU 20.5 SEER Concealed Duct Mitsubishi Mini-Split Single Zone Heat Pump - SEZ-KA12NA2



Ships in 3-4 Weeks




Availability: Ships in 3-4 Weeks

Authorized Mitsubishi Dealer

AHRI Certified

AHRI Number:202392028

Bread Checkout
Free Shipping
Accessories for this product



The Mitsubishi SEZ-KD12NA4R1.TH / SUZ-KA12NA2 mini split is designed to be a slim ducted system for when standard central air handlers are physically too large for the space. With its Energy Star certificate and its 12,000 BTU output, the unit is a good choice for many applications.


  • Designed to be able to heat and cool a small space in perfect conditions
  • 12,000 BTU, 16 SEER ducted mini split
  • Slim design for more installation potential
  • Energy Star certified
12,000 BTU, 16 SEER

With its 16 SEER rating and its Energy Star certificate, the Mitsubishi SEZ-KD12NA4R1.TH / SUZ-KA12NA2 is designed with an efficient output of 12,000 BTU. Depending on a number of variables such as ductwork runs, this model is able to cover a small space or two smaller adjacent spaces.


Straight from the manufacturer, the unit has a 5 year parts warranty and 7 year compressor warranty. With installation that follows the equipment’s state and local codes and when the unit is registered online through Mitsubishi, the warranty is upgraded to a 10 year parts and compressor warranty.

Reliable Functionality

The Mitsubishi SEZ-KD12NA4R1.TH / SUZ-KA12NA2 will provide heat at an outdoor temperature of -4°F, reliably providing warmth to your space.

Ease of Comfort

The Mitsubishi SEZ-KD12NA4R1.TH / SUZ-KA12NA2 ducted mini split comes with a wall-mounted controller that is made to be field-installed. With the Kumo Cloud, a Mitsubishi-branded Wi-Fi mini split adapter found here, the unit can be accessed anywhere that you have Internet.


The Mitsubishi SEZ-KD12NA4R1.TH / SUZ-KA12NA2 ducted mini split is designed to be a much smaller version of an all-electric central heat pump central system. As the air handler is designed to fit in smaller spaces such as in the ceiling or wall instead of needing its own closet, the unit also has a lower output than many central systems. As a result, in most houses, you will need more than one to cover the entire house depending on your home’s needs. Moreover, the unit can either be blown directly into a space with proper mounting equipment or it can blow through ductwork first. This allows you to direct the airflow into one room or branch it off into multiple rooms, making it ready for multiple installation applications.

Product Specifications

More Information
12,000 BTU 20.5 SEER Concealed Duct Mitsubishi Mini-Split Single Zone Heat Pump - SEZ-KA12NA2
Refrigerant Charge Pre-Charged For: 25'
Weight (in lbs) 127.000000
AHRI Certificate Number 202392028
Brand/Manufacturer Mitsubishi
Controller Not Included
Additional Information Heat Pump
Additional Information Maximum Line Set Length: 65'
Additional Information Drain: 1-1/4"
HSPF 12.4
Cooling BTU 12,000 BTU
Heating BTU 15,000 BTU
Maximum CFM 222-388CFM
Decibel Level (dBA) Indoor Unit: 23-33 | Outdoor Unit: 49-51
Energy Star Yes
Refrigerant R410A
Capacity Dehumidification Rate: 0.24 gal/hr
SEER (Efficiency) 18-20
EER 12.9
Liquid Line 1/4"
Suction Line 3/8"
Electrical 208/230V 1 Phase 60 Hz
Phase Single Phase
Max Breaker Size 16
Min. Breaker Size 9
Amperage Requirement 15
Mini-Split Type Concealed Duct
Min/Max Outdoor Temp for Heating -4°-75°
Min/Max Outdoor Temp for Cooling 14°-115°
Zone Compatibility Single Zone
Operating Mode Cooling, Heating
Height Indoor Unit: 7-7/8" | Outdoor Unit: 21-5/8"
Width Indoor Unit: 39" | Outdoor Unit: 31-1/2"
Depth Indoor Unit: 27-9/16" | Outdoor Unit: 11-1/4"
Additional Info Indoor Unit Weight: 50 lbs | Outdoor Unit Weight: 81 lbs
Warranty 10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information PROPOSITION 65 WARNING


Write Your Own Review
You're reviewing:12,000 BTU 20.5 SEER Concealed Duct Mitsubishi Mini-Split Single Zone Heat Pump - SEZ-KA12NA2
Your Rating

Questions and Answers

Customer Questions
How many square feet will it handle? One room.
Thank you for your question. This 12,000 BTU mini split system should generally cover around 400 to 650 square feet. However, this estimation is also dependent upon climate zone, number of windows and quality of insulation. For instance a home with lots of windows, poor insulation and in an extremely cold climate zone will require more power than the same sized home with quality insulation, few windows and in a temperate climate zone. For more information on sizing, please follow this link: https://hvacdirect.com/sizing-air-conditioner-and-heater.html For more assistance, please give us a call.
Did you find what you were looking for?
Why Choose Mitsubishi Mini Splits?
Why Choose Mitsubishi Mini Splits?

Mitsubishi Electric’s technologically advanced mini-split air conditioners and heat pumps can provide superior comfort, lower energy costs, zero emissions, and ultra-quiet heating and air conditioning in any climate.


Our mission is simple: To provide an open HVAC marketplace online, offering the best HVAC brands directly to the public, based on real, affordable prices. For too long, local dealers have charged whatever they could get away with - but now YOU HAVE A CHOICE.


Choose us for:

  • Real recommendations on only what you need (no upsells)
  • Real wholesale prices, never inflated
  • Real advice & tech support from experts in home heating & cooling
Money Icon


We sell products at wholesale pricing. No markups, no hidden fees. Our average customer saves BETWEEN THREE TO SIX THOUSAND DOLLARS
-That's the Direct Advantage!

Best Brands


Just because a brand is nationally known, doesn't mean it's the best. Our HVAC technicians have hand-selected the most efficient and durable products for American homeowners, giving you exactly what you need at the best pricing.



We choose products with long, best-in-the-market warranties by manufacturers with great customer service and solid reputations. This gives you peace of mind that you'll be getting a great quality product.

Huge Savings
Read about a real life example from one of our
customers who saved thousand.

We've helped over 100,000 American homeowners and earned their trust.

Expert call Icon


Real technicians with real experience are available on the phone and chat to help you pick your perfect system

Chat Icon


Unlike local dealers who try to upsell expensive brands or unnecessary equipment, we only recommend the exact products you need, and choose from affordable alternatives to name brands.

Search Icon


Quickly filter what you're loooking for with our HVAC EASY SYSTEM SELECT tool.

HVAC Expert Call

We've helped over 100,000 American homeowners and earned their trust.

Deliver Icon


All our HVAC systems ship free, making your new system even more affordable. Plus, looko for free shipping on many standalone products too.

Tracking Brands


Don't wait for your system. We have over $50 million dollars of inventory in our warehouses nationwide - we're ready for your order!

Web display Icon


Our website displays real-time inventory, so you know exactly when to expect your order. Choose from in-stock items so you can get your new system right away.

Buying Steps

We've helped over 100,000 American homeowners and earned their trust.

See What Our Customers are Saying

Customer Reviews