Mitsubishi PEA/PUZ-A18NHA4
Mitsubishi PEA/PUZ-A18NHA4
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Mitsubishi P-Series - 18,000 BTU - Concealed Duct - Ductless Heat Pump System - 14.3 SEER



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Mitsubishi P-Series - 18,000 BTU - Concealed Duct - Ductless Heat Pump System - 14.3 SEER
Mitsubishi P-Series - 18,000 BTU - Concealed Duct - Ductless Heat Pump System - 14.3 SEER
Model: PEA/PUZ-A18NHA4
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Recommended Accessories

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Expert Recommended Accessories Selected by Chris, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10


    For over 50 years, Mitsubishi has remained at the forefront of the mini split industry thanks to their dedication to providing efficient, user-friendly comfort solutions. The PEA/PUZ-A18NHA4 is a packaged single zone heat pump mini split system designed to bring unobtrusive heating and cooling to any room in a large home or business. A concealed duct indoor unit, PEA-A18AA4.TH, is is paired with an outdoor condenser that uses some of the most advanced technology available to modulate temperature without the energy-wasting overshoots and short-cycling associated with simpler systems. As part of Mitsubishi's commercial P-Series, the condenser is constructed with industrial-grade materials to ensure consistent performance in the harshest conditions, making this system ideal for critical applications that require constant conditioning.

    Product Features

    Precision Temperature Control Technology
    The PUZ-A18NHA4 outdoor condenser is equipped with inverter technology and an electronic linear expansion valve. These components improve temperature accuracy and system efficiency through precise adjustments of both compressor speed and refrigerant flow.

    In heating mode, Mitsubishi's hot start technology prevents cold drafts by stalling fan operation while the heat exchanger is warming up.

    When the indoor unit is run in dry mode, the coil's temperature stays just below the dew point of the return air, removing unwanted moisture. This improves your comfort and reduces both mold growth and the chance of property damage in the conditioned space.

    Condensate Removal System
    The PEA-A18AA4.TH contains an internal drain mechanism capable of lifting condensate 21-11/16". This simplifies installation and prevents condensate overflow, which can damage or destroy your property.

    Advanced Remote Controller
    The MHK1 wireless wall mounted remote controller kit has dual set point control and multiple scheduling options. It also has the capacity to learn how quickly your zone is cooled and heated and adjust scheduled operations so that the zone is always the right temperature at the right time.

    Inconspicuous Design
    Installing a source of zoned comfort doesn't have to disrupt the visual layout of your space. With the PEA-A18AA4.TH, a small air register is the only evidence of that a powerful and efficient mini split is servicing your room.

    Product Includes
    • (1) Mitsubishi PUZ-A18NHA4 Mini Split Outdoor Condenser
    • (1) Mitsubishi PEA-A18AA4.TH Mini Split Indoor Unit
    • (1) Mitsubishi MHK1 Wireless Remote Controller Kit
    Product Note

    This product requires the following accessories for installation:

    • Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor unit.
    • Drain Tubing - Drain tubing facilitates the reliable and effective removal of condensate from your system. It connects your indoor unit to drain locations of your choosing.
    • Disconnect Box & Electrical Whip Kit - The Disconnect Box & Whip Kit provides a safe and simple way to connect your outdoor condenser to your fuse box.
    • Connecting Wire - This durable, insulated wire provides power to your indoor unit from your outdoor condenser.
    • Outdoor Condenser Plastic Pad (Optional) - This pad provides an even surface, free of debris, on which to place your outdoor condenser.
    • Wall Bracket (Optional) - The outdoor mini split wall bracket is a simple and sturdy way to mount your outdoor condenser off of the ground.

    Adding these accessories to your order will provide a complete, ready-to-install mini split system. Our convenient Mini Split Installation Starter Kits include all of the required accessories listed above. Starter kits can be added to your order from the accessories tab above.


specs product image PID-60333
Cooling BTU
Cooling Capacity
18000 BTU
Heating Capacity
19000 BTU
SEER Learn More
SEER (Seasonal Energy Efficiency Ratio) is a measurement of cooling efficiency over a typical cooling season. It is useful for comparing energy efficiency of cooling systems. The higher the SEER, the more energy efficient the system. Learn More
EER Learn More
EER (Energy Efficiency Ratio) is a measurement of cooling efficiency under fixed conditions. It is useful for comparing units that will operate consistently under one set of conditions (e.g. server room). The higher the EER, the more efficient the system. Learn More
HSPF Learn More
HSPF (Heating Seasonal Performance Factor) is a measure of heating efficiency for heat pumps. It is useful for comparing energy efficiency of heat pumps. The higher the HSPF, the more efficient the system. Learn More
Cooling Power Input
2150 Watts
Heating Power Input
1540 Watts
General Information
Concealed Duct System
Product Line
Operating Mode Learn More
Operating Mode
Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements. Learn More
Heat Pump
Number of Zones Learn More
Number of Zones
A zone is a room or area within a building that has its own temperature control.
System Code
DOE Regional Compliance Learn More
DOE Regional Compliance
In 2015, the US Department of Energy broke the country into three regions - North, Southeast, and Southwest - and set legal standards for energy efficiency within each region. Learn More
ETL Listed
AHRI Certified
AHRI Reference Number
Product Weight
155 Pounds


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Mitsubishi P-Series - 18,000 BTU - Concealed Duct - Ductless Heat Pump System - 14.3 SEER
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