How to Pick the Perfect Mini Split Wall Mounted Indoor Unit
Wall-mounted units are the most commonly found, most affordable option for indo...
Local Pickup FAQ's
Hover to zoom
1 Of 5
Mitsubishi Wall Mounted 5-Zone H2i System - 42,000 BTU Outdoor - 9k + 9k + 9k + 12k + 15k Indoor - 21.5 SEER2
Model:
MXZ-SM42NAMHZ2 3-GS09 GS12 GS15
+
Share This Product
Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- H2i Technology
- H2i Hyper Heat performance offers 100% heating capacity at 5 degrees and 75% heating capacity at -13 degrees Fahrenheit.
- Advanced Filtration System
- The MSZ-GS unit combines a hybrid catechin deodorizing filter with an enzyme-based filter for managing allergens. The anti-allergy filter not only captures the offending particles, it also breaks them down, cleaning the air as it is conditioned.
- Integrated Base Pan Heater
- MXZ-SM outdoor condensers have a factory-installed base pan heater in the drain pan. This prevents condensate from freezing and damaging the unit in frigid climates.
- Econo Cool Mode
- By slowly adjusting the cooling set point and swinging the horizontal vanes, the MSZ-GS unit can improve the efficiency of cooling operations without compromising the comfort provided.
- Hot-Start
- Mitsubishi's Hot-Start technology prevents cold drafts by delaying fan operation until the heat exchanger has warmed up.
- Multiple Vane Control Options
- Auto mode selects the best vane position based on operating mode, and the Swing modes cycle through all positions for maximum coverage. When wide mode is activated, fan speed increases beyond the current setting.
- Recommended line set sizes for indoor unit connectivity:
- MSZ-GS09NA: 1/4" x 3/8" Line Set (Qty 3)
- MSZ-GS12NA: 1/4" x 3/8" Line Set
- MSZ-GS15NA: 1/4" x 1/2" Line Set
- Recommended line set sizes for branch box connectivity:
- MXZ-SM42NAMHZ2: 3/8" x 5/8" Line Set
- (1) Mitsubishi - 42k BTU - M-Series Smart Multi H2i Outdoor Condenser - For 2-5 Zones (MXZ-SM42NAMHZ2)
- (1) Mitsubishi GS-Series 15k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS15NA-U1)
- (1) Mitsubishi M-Series - 5 Ports - Branch Box (PAC-MKA53BC)
- (1) Mitsubishi GS-Series 12k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS12NA-U1)
- (3) Mitsubishi GS-Series 9k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS09NA-U1)
- Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor units.
- Drain Tubing - Drain tubing facilitates the reliable and effective removal of condensate from your system. It connects your indoor units 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 units from your outdoor condenser.
- Outdoor Condenser Plastic Pad or Wall Bracket - We recommend outdoor condensers should not be placed directly on the ground. An outdoor condenser pad or wall bracket will provide a stable way to mount your condenser free from obstructions and debris. Adding these accessories to your order will provide a complete, ready-to-install mini split system. All Mini Split Systems require one Primary Mini Split Installation Kit. You will need a Secondary Installation Kit for each additional indoor unit.
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. This is a five zone mini split system designed to give you individual control over the temperature in multiple rooms. An efficient MXZ-SM42NAMHZ2 outdoor condenser, built with advanced technology, is combined with quiet, wall mounted MSZ-GS indoor units and five wireless remote controllers for the perfect marriage of convenience and comfort. With multiple operating modes, multiple fan speeds, and multiple airflow directions, this is a system that fits the needs of nearly any home.
Product Includes
Product Note
This product requires the following accessories for installation:
Specifications
Product Includes
- (1) Mitsubishi - 42k BTU - M-Series Smart Multi H2i Outdoor Condenser - For 2-5 Zones (MXZ-SM42NAMHZ2)
- (1) Mitsubishi GS-Series 15k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS15NA-U1)
- (1) Mitsubishi M-Series - 5 Ports - Branch Box (PAC-MKA53BC)
- (1) Mitsubishi GS-Series 12k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS12NA-U1)
- (3) Mitsubishi GS-Series 9k BTU Wall Mounted Unit - For Multi or Single Zone (MSZ-GS09NA-U1)
MXZ-SM42NAMHZ2 3-GS09 GS12 GS15
General Information
Type
Wall Mounted
Product Line
M-Series H2i
Product Category
Mini Split Heat Pump System
Operating Mode
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
Heating and Cooling
Number of Zones
Number of Zones
A zone is a room or area within a building that has its own temperature control.
5
Refrigerant Type
R-410A
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
9 + 9 + 9 + 12 + 15
Base Pan Heater Included
Yes
Outdoor Unit Size
42000 BTU
DOE Regional Compliance
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
Nationwide
Performance
Cooling Power Input
3135 Watts
Heating Power Input
3435 Watts
Low Ambient Heating
Yes
Minimum Outdoor Temperature for Heating
Minimum Outdoor Temperature for Heating
This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures. Learn More
-13 F
Minimum Outdoor Temperature for Cooling
23 F
SEER2
SEER2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. SEER2 (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 SEER2, the more energy efficient the system.
21.5
EER2
EER2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. EER2 (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 EER2, the more efficient the system.
13.4
HSPF2
HSPF2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. HSPF2 (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 HSPF2, the more efficient the system.
11.1
Dimensions
Product Weight
398 Pounds
Shipping Weight
432 Pounds
Certifications
ETL Listed
Yes
Energy Star Listed
Yes
AHRI Certified
Yes
AHRI Reference Number
213248834
MXZ-SM42NAMHZ2
General Information
Type
Outdoor Condenser
Product Line
M-Series H2i
Product Category
Mini Split System Components
Operating Mode
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
Heating and Cooling
Maximum Number of Zones
5
Multi-Zone Compatible
Yes
Refrigerant Type
R-410A
Installation Location
Outdoor
Base Pan Heater Included
Yes
Outdoor Unit Size
42000 BTU
Performance
Cooling BTU
42000
Cooling Capacity
42000 BTU
Heating Capacity
48000 BTU
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
54 dB
Low Ambient Heating
Yes
Minimum Outdoor Temperature for Heating
Minimum Outdoor Temperature for Heating
This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures. Learn More
-13 F
Minimum Outdoor Temperature for Cooling
23 F
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
42 Amps
Recommended Breaker Size
45 Amps
Dimensions
Maximum Line Length
492 Feet
Gas Connection Size
5/8 Inch
Liquid Connection Size
3/8 Inch
Product Height
52 11/16 Inches
Product Width
41 17/48 Inches
Product Depth
13 Inches
Product Weight
278 Pounds
Shipping Weight
302 Pounds
Certifications
ETL Listed
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Compressor Warranty
7 Years
MSZ-GS15NA-U1
General Information
Type
Wall Mounted
Product Line
GS-Series
Product Category
Mini Split System Components
Multi-Zone Compatible
Yes
Refrigerant Type
R-410A
Remote Control
Wireless
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
15
Installation Location
Indoor
Performance
Cooling BTU
15000
Cooling Capacity
15000 BTU
Moisture Removal
2.5 Pints/Hour
Maximum Air Flow
504 CFM
Minimum Air Flow
191 CFM
Minimum Sound Level
26 dB
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
49 dB
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
1/2 Inch
Liquid Connection Size
1/4 Inch
Product Height
11 5/8 Inches
Product Width
31 7/16 Inches
Product Depth
9 1/8 Inches
Product Weight
23 Pounds
Shipping Weight
26 Pounds
Certifications
ETL Listed
Yes
AHRI Certified
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
PAC-MKA53BC
General Information
Type
Branch Box
Product Line
M-Series
Product Category
Mini Split Accessories
Ports Quantity
5
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
5/8 Inch
Suction Connection Size
3/8 Inch
Line Set A Liquid Connection
1/4 Inch
Line Set A Gas Connection
3/8 Inch
Line Set B Liquid Connection
1/4 Inch
Line Set B Gas Connection
3/8 Inch
Line Set C Liquid Connection
1/4 Inch
Line Set C Gas Connection
3/8 Inch
Line Set D Liquid Connection
1/4 Inch
Line Set D Gas Connection
3/8 Inch
Line Set E Liquid Connection
1/4 Inch
Line Set E Gas Connection
1/2 Inch
Product Height
6 11/16 Inches
Product Width
17 35/48 Inches
Product Depth
11 1/48 Inches
Product Weight
16 Pounds
Warranty Information
Parts Warranty Days
90
MSZ-GS12NA-U1
General Information
Type
Wall Mounted
Product Line
GS-Series
Product Category
Mini Split System Components
Multi-Zone Compatible
Yes
Refrigerant Type
R-410A
Remote Control
Wireless
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
12
Installation Location
Indoor
Performance
Cooling BTU
12000
Cooling Capacity
12000 BTU
Moisture Removal
2.5 Pints/Hour
Maximum Air Flow
381 CFM
Minimum Air Flow
134 CFM
Minimum Sound Level
19 dB
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
45 dB
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
11 5/8 Inches
Product Width
31 7/16 Inches
Product Depth
9 1/8 Inches
Product Weight
23 Pounds
Shipping Weight
26 Pounds
Certifications
ETL Listed
Yes
AHRI Certified
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
MSZ-GS09NA-U1
General Information
Type
Wall Mounted
Product Line
GS-Series
Product Category
Mini Split System Components
Multi-Zone Compatible
Yes
Refrigerant Type
R-410A
Remote Control
Wireless
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
9
Installation Location
Indoor
Performance
Cooling BTU
9000
Cooling Capacity
9000 BTU
Moisture Removal
0.4 Pints/Hour
Maximum Air Flow
381 CFM
Minimum Air Flow
134 CFM
Minimum Sound Level
19 dB
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
43 dB
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
11 5/8 Inches
Product Width
31 7/16 Inches
Product Depth
9 1/8 Inches
Product Weight
23 Pounds
Shipping Weight
26 Pounds
Certifications
ETL Listed
Yes
AHRI Certified
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Reviews
Mitsubishi MXZ-SM42NAMHZ2 3-GS09 GS12 GS15 Reviews & Ratings
Be the First to Write a Review
Do you own this product?
Please share your insights with fellow shoppers.
Please share your insights with fellow shoppers.
Product Q&A
Be the First to Ask A Question
Answered by Ken, the eComfort Product Expert
How-To Articles
What You Should Know About Mini-Split Wiring
Although they are easier to install than central air conditioning systems, mini...
How to Pick the Perfect Mini Split Floor Mounted Indoor Unit
If you are installing a mini split system but you don't have enough clearance f...
eComfort How-To Library
Articles, Tips and Buying Guides from Our Experts
Manuals
MXZ-SM42NAMHZ2
Ask A Question!
*Required Fields
+
Thank You For Submitting Your Question
Your submission has been sent successfully. Please give our experts up to two business days to respond.
Media Gallery
Mitsubishi Wall Mounted 5-Zone H2i System - 42,000 BTU Outdoor - 9k + 9k + 9k + 12k + 15k Indoor - 21.5 SEER2
Customer Review Images
