Mitsubishi Hyper Heat Problems! (3 Common Problems)

By - Ron Singh

Updated -

Mitsubishi Hyper-Heat is a terrific heating system that can keep your rooms cool or warm as you desire.

As good as this dual-purpose temperature regulator is, some problems can interfere with its optimal performance.

Let’s review the issues with this heat pump and other factors that influence its worth.

The common issues with Mitsubishi Hyper-Heat range from harmless noises to major malfunctions. Minor heat pump problems could also be indications of more serious ones. Some of these problems result from a lack of maintenance, and you can easily fix them

What Are the Problems With Mitsubishi Hyper Heat Technology?

Mitsubishi Hyper Heat Problems

A lot of things could go wrong with Mitsubishi Hyper-Heat technology. These problems include noises and smells from the system and power and efficiency faults.

The following are these classes of problems and more specific issues under them:

#1. Noises and Smells

Sounds emanating from Mitsubishi Hyper-Heat are, most of the time, harmless indicators of the system’s working conditions.

However, a normal heating pump works silently, and high decibels of these sounds can serve as disturbances.

There are different sounds from a Mitsubishi hyper heat pump to signify different states of the system.

The plastic components of a heat pump contract and expand following changes in temperature.

This contraction and expansion of parts generate clicking sounds. Aside from the disturbance it poses, this sound is not a serious problem.

Another familiar sound that you will notice in a Mitsubishi Hyper-Heat is a hissing sound.

Like the clicking sound, this is not a sign of any malfunction. The hissing sound comes from the flow of refrigerant in the system.

It’s not unusual for ice to accumulate on the components of a heat pump. The system melts or defrosts this ice in order not to freeze over.

The defrosting process can give rise to popping or cracking sounds. Smells, however, signify faults in the system’s components.

Identifying the smell is key to knowing what the problem is. A sour or musty smell signifies possible mold in the heat pump.

Also, a leaking refrigerant will give off the smell of vinegar. Furthermore, a fishy smell from the heat pump indicates an electrical fault or leaks.

#2. Power Faults

Power-related issues are common with heat pumps. These problems include refusal to turn on/or off and constant shutting down of the system.

There are many reasons why the system will refuse to turn on or off. It could be due to faulty remote control or dead remote batteries.

Checking these components will help ascertain the reason and possible solutions.

Other reasons for the Hyper-Heat heating system’s inability to turn off include low refrigerant levels and faulty wirings.

A frozen evaporator coil or overheating compressor is responsible if it keeps shutting down. 

#3. Efficiency Issues

These problems are deficiencies in a Mitsubishi Hyper-Heat’s ability to carry out normal heating and cooling functions.

The issues can also cause it to drip water and be unable to dehumidify. A less severe level of these issues is insufficient cooling and heating.

This problem can result from an incorrect temperature setting, a dirty filter, or a blocked outdoor unit.

Internal or external factors could be responsible for the Mitsubishi Hyper-Heat’s inability to cool or heat.

Frozen coils and inadequate levels of refrigerant are causes of these issues within the system.

Outside, heat and cold generators like cookers and fans interfere with the system’s ability to heat and cool.

Ineffective dehumidification is also a possible problem with Mitsubishi Hyper-Heat. The system will not dehumidify if there is an issue with the drain line or the condensation process.

Also, if the system’s capacity is incompatible with the space it is servicing, it will have problems dehumidifying.

Most of these problems arise from improper installations and neglect. You can avoid them by correctly installing your system and regular maintenance.

You should fix Mitsubishi Hyper-Heat problems when you notice them and avoid escalation.

In the event of a problem, the system will indicate the issue with the help of error codes on it. Have a professional HVAC technician look at it if you can’t handle it.

Is Mitsubishi Hyper Heat Worth It?

Considering the advancement of the Mitsubishi Hyper-Heat technology, it is worth it. This innovation in temperature regulator towers above other systems meant for similar purposes.

An understanding of the system’s abilities will help you rate it better. An outstanding feature of the Mitsubishi Hyper Heat is its superior temperature limit.

A regular heating system’s efficiency will drastically reduce as the outdoor temperature drops. The Hyper Heat, however, will function optimally even at subzero temperatures. 

Therefore, if you stay in a place where the temperature drops below 0°F, you will find the Hyper Heat extremely useful.

Other mini splits won’t be as effective in keeping your home warm in such harsh conditions. In a home, the occupants of the various rooms may have different temperature preferences.

Mini-splits such as the Hyper Heat allow you to set different temperatures for all the rooms. The zone control typical of mini splits is another reason to rate the Mitsubishi Hyper heat.

So with Mitsubishi Hyper Heat, you don’t have to fight about the temperature level of the heating system.

Everyone can have the temperature they desire with just a few settings. An instant hot start is possible with the Mitsubishi Hyper Heat.

The system delivers heat immediately after you turn it on, so you don’t have to wait for some time before getting heat. 

There are several other advantages of the Mitsubishi Hyper Heat. In the same vein, the system also has its downsides.

The table below gives these pros and cons;

Low operation costHigh upfront cost
Easy maintenance Installation difficulties
Fewer carbon emissionsSustainability concerns
Dual functions
Long life span
Consistent room temperature 

The advantages of the Mitsubishi Hyper Heat far outweigh its downsides. All other temperature-regulating systems have similar issues, but few come close in features and performance.

If you need a heating system, don’t hold back on getting a Mitsubishi Hyper Heat.

How Long Do Mitsubishi Hyper Heat Units Last?

Heat pumps and other HVAC systems will last for 15 years on average. However, with proper maintenance, Mitsubishi Hyper Heat units can last for as long as 30 years.

The life span of your Mitsubishi Hyper Heat system depends on some factors. Whether or not it reaches the possible maximum number of years depends on the conditions surrounding its usage.

The circumstances that influence the life expectancy of the system include the following.

#1. Maintenance 

Maintenance is a strong factor determining the lifespan of Mitsubishi hyper heat systems.

Heating systems require proper care, like regular cleaning and changing damaged or worn-out parts. They also need professional maintenance at least two times a year.

The system will last and function optimally if you carry out regular maintenance. Otherwise, it will break down soon enough.

#2. Sizing

The system’s compatibility with space determines whether it will last or not. The right size for the right space will last long enough.

On the other hand, an incompatible size will wear out quickly due to overworking.

#3. Installation Procedures

These include the main installation process and even the expertise of the installers.

If you get the installation wrong, your system will not reach its maximum life span. If you do it correctly, it will last long.

#4. Usage

Generally, frequent usage reduces the lifespan of most appliances. Your Hyper Heat system will not last long if you use it continuously at extreme thermostat settings.

You can schedule its usage to the time you need it if you want it to last longer.

#5. Environmental Factors

The condition of a Mitsubishi Hyper Heat’s environment also determines its longevity.

For instance, the salty nature of coastal areas exposes the system to corrosion. Dry and dusty areas will make the filters work more and wear out quicker.

Some locations favor mold growth, which can affect the system. Using the Hyper Heat under good environmental conditions will make it last longer.

Do Mitsubishi Hyper Heat Work In Cold Weather?

Mitsubishi Hyper Heat works in cold weather. Its ability to function efficiently at subzero temperatures sets it aside from other heating systems. 

The efficiency of regular heat pumps drops as the temperature approaches 0°F, with most unable to function at that temperature.

The Hyper-Heat system, however, is capable of 76% efficiency even at -13°F. It does this with the help of inverter technology with the patented Mitsubishi flash injection process.

A typical heat pump warms rooms by extracting heat from the air outside and transferring it to the indoor blowers.

This heating process becomes difficult as the temperature drops and the air gets colder. Regular heat pumps will lose their efficiency at this point.

At temperatures below 40°F, the Mitsubishi Hyper Heat compressor motor increases its speed to generate more heat.

The system absorbs the extra heat from the compressor magnets and channels it to the blower.

This way, hyper heat provides warmth even at temperatures that other heat pumps fail.

How Much Is a Mitsubishi Hyper Heat System?

The average cost of installing a Mitsubishi Hyper-Heat system is $4,500 per zone. You can spend as much as $22,000 to have a five-zone system in your home. 

These prices are estimated prices for the system. You will incur additional expenses during the actual installation.

You will also spend more if your home has special needs that require specialized equipment. Summarily, your requirement depends on how much you will spend on a Mitsubishi Hyper-Heat system.

Contact a licensed Mitsubishi Hyper-Heat installer for an actual price based on what you need.


Some problems can interfere with the functioning of the Mitsubishi Hyper-Heating system.

However, these issues are typical of heating systems and do not significantly affect the worth of the Hyper-Heat.

The system remains a top choice, especially for homes with extremely low temperatures.

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