Mitsubishi Hyper Heat Mini Split Install and Review

By | December 6, 2023

Mitsubishi Hyper Heat Mini Split Install and Review O
There are many mini split systems available from several different manufacturers.

Mitsubishi is one such manufacturer that is known for its well-built units and a good warranty.

They have many packages that can be installed, including the Hyper Heat model, which is designed for colder temperatures.

Mini split heat pump systems work very well cooling during the summer but can struggle to heat during the winter when the temperature drops too much.

Most units can heat down to 10 degrees Fahrenheit but will start to have problems when the temperature drops much more.

The Mitsubishi Hyper Heat system is rated to provide 100% heating capacity at between 0° Fahrenheit and 5° Fahrenheit outdoor ambient, and up to 85% heating down to -13° Fahrenheit outdoor ambient temperature.

This makes it the best mini split system for very cold climates.

Mitsubishi Hyper Heat Mini Split Installation

The installation for a Mitsubishi Hyper Heat is the same as most other mini split packages.

The outside condenser is placed on a pad, block, or stand.
Mitsubishi Hyper Heat Mini Split Install and Review Stand

An inside bracket is bolted onto a wall for the inside unit to hang on.
Mitsubishi Hyper Heat Mini Split Install 3
A hole is drilled through the wall to run the copper line-set and control wires.

The inside unit is mounted on the wall bracket.
Mitsubishi Hyper Heat Mini Split Install and Review Inside Wall Unit

The copper line-set is connected. The copper tubes are what transfer refrigerant between the inside and outdoor unit, transferring heat.

The line-set is not included with the kit and needs to be bought separately.

The electrical is hooked up. This includes control wires between the inside and outdoor unit along with the AC power.

After it is all hooked up, a vacuum is placed on the system and tested for any leaks before releasing the refrigerant.

Mitsubishi Hyper Heat Mini Split Operation

The unit comes with a nice remote control with a small display for controlling the temperature.

The inside unit is able to detect temperature zones in a room and directs air flow to the spot.

It has a sensor built-in, that detects cold or hot spots, and along with fins, is able to send air to that location.

Like most all mini split units, it is very quiet, almost silent, with only noise from the inside fan motor.

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Mitsubishi Hyper Heat Availability
Available Here on Amazon
Available Here on eBay

Mitsubishi mini splits systems are some of the best units available.

They are highly efficient, very well built, and have a very good warranty.

The SEER rating is 25-30, which is one of the highest available.

The main downside is the cost since they cost more compared to other systems.

Also, they are not as do-it-yourself friendly as other units and are mainly meant for a professional HVAC tech to do the installation.

They can be installed by a homeowner but would require more skill compared to other kits.

For example, no line-set or control wires are included and need to be bought separately.

This is not a huge problem for a more advanced home DIY type person but may be a problem for anyone new to a mini split install.

If you do install the unit yourself, be sure to first watch some YouTube videos first like those below.

As always, be sure to read the reviews on Amazon, forums, here, or elsewhere to be sure any unit is a good fit for you.

Category: Mini split heating and cooling air conditioner heat pump systems

About Aaron H. Benetti

Aaron H. Benetti an HVAC technician who has worked in the field since 1991. He began his career as an HVAC installer and later began doing troubleshooting and repairs. Around 2010, he began to write books on HVAC topics, mainly tutorials and how-to information. Currently, Aaron works as an HVAC tech and also writes many articles and posts for websites as well as books and videos on HVAC topics.

7 thoughts on “Mitsubishi Hyper Heat Mini Split Install and Review

  1. Terry Shumate

    Bought a new Mitubushi 18000btu heat pump. Works great in cooling, horrible in heat. Plastic makes popping and dripping noises, coil makes pinging noises as unit heats and cools down. Mitubishi has never heard of such a thing and my only recourse is to pay for someone to diagnose problem and if unit is deemed defective I must also pay for repair or replacement. Hundreds of dollars with no guarantee, and no labor warranty. Beware

  2. Dan Payne

    Had a Mitsu hyper heat installed outdoor unit is MXZ3C24NAHZ, Indoor zone 1 MSZFH06NA, Indoor zone 2 MSZFH06NA, Indoor zone 3 MSZFH15NA. Seemed to cool well without attic or floor insulated, now that it is 30F outside, thermostat remotes set at 72F, indoor temp 65F, fans on automatic mode stay on low speed, air temperature coming from indoor heads is 74-76F. Any ideas? Thank you

  3. Eugene

    I have a Mitsubishi mini-split that’s about 8 years old. The cooling works reasonably well but below 40 degrees I switch on my boiler which produces steam/radiator heat. When we have used our Mitsubishi for producing heat we do notice that it’s a bit drafty near the floors of the house as the units are located near the top of the ceilings. So the fans blow warm air down towards the floor, as opposed to our radiators which are (obviously) at floor level. We definitely notice the difference between the two heating systems in the winter.

    I’m certainly interested in the Mitsubishi Hyper-heating feature but I’m wondering what anyone else here has experienced regarding even-flow heat distribution coming out of the mounted fan units.

  4. Gavin Lyman

    Glad to know more about Mitsubishi Hyper Heat Mini Split Install. Thankful for your post for giving such good info.


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