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Mitsubishi Heat Pump Reviews: Pros, Cons Cost

In the market for a new heat pump? Consider one built by Mitsubishi. This brand has a comprehensive range of heat pumps to choose from as well as a strong reputation for quality. In this guide, we'll explain them in detail and also offer up some tips on how to choose the best Mitsubishi heat pump for your needs.

September 26, 2022

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About The Mitsubishi Group

Youlikely know the brand name best  from itsautomobiles, but Mitsubishi is so much more than just a car company. It’s aconglomerate of businesses with deep roots in Japanese history. The group ismade up of ten segments that operate in a variety of industries, including notonly automobiles, but also electronics, chemicals, heavy machinery, andlogistics.

Mitsubishigot its start in 1870 as a shipping company, founded by Yataro Iwasaki. Thename “Mitsubishi” actually comes from two Japanese words: “mitsu” meaning“three” and “hishi” meaning “water caltrop,” a plant that’s also known as waterchestnut. The name was chosen to symbolise the company’s three diamond logo.

Today,the Mitsubishi Group is one of the largest business groups in Japan, with aglobal reach. The group’s businesses touch nearly every aspect of life, fromthe cars we drive to the electricity that powers our homes.

Mitsubishi Heat Pumps

Mitsubishiis a world leader in heat pump technology. The company offers a wide range ofproducts to meet the needs of any home or business, from small residentialunits to large commercial systems.

Mitsubishiheat pumps are known for their efficiency, reliability, and comfort. Their airsource heat pumps are particularly popular, as they can be used in any climateand are often more energy-efficient than traditional heating and coolingsystems. Through the following, we'll go over the five main heat pump optionsin Mitsubishi's air source collection, explain their features, as well as thepros and cons of going with each model.

Ecodan R744 Air Source Heat Pump

Arelatively compact and efficient monobloc unit, the Ecodan R744 is one ofMitsubishi's latest air source heat pumps. It has been specifically designedfor new build applications, with its powerful performance being ideal forsituations with dominant hot water needs. But this heat pump is also verysuitable for existing homes and retrofit projects - a well packaged hydroboxand highly compatible system make the Ecodan R744 a viable option in plenty ofcircumstances.

Builtwith hydraulic components, this product comes with three flow sensors, magneticfilter and automatic air vent. It comes with standard energy monitoringcapabilities and even comes with the option of Wi-Fi enabled controls.

Inline with Mitsubishi's core brand values, the Ecodan R744 Air Source Heat Pumpis notably environmentally-friendly. It uses natural CO2 refrigerant, which hasbeen tested to have a Ozone Depletion Potential of zero and Global WarmingPotential of one. What's more, the unit operates at a COP of 3.0, whichalthough not the highest score, is better than average for most air source heatpumps.


Whatare the advantages to buying the Ecodan R744 Air Source Heat Pump for yourhome? Here are some of the best:

  • Standardenergy monitoring. Complete with a built-in energy monitoring system, the R744is easy to manage and monitor in regards to energy consumption.
  • Broadoperating ambient temperature. This heat pump is capable of performing inambient temperatures as low as -15°C and as hot as +35°C.
  • Lowoperating noise levels. The Ecodan R744 has a class-leading low operating soundpower level of just 53 dBA.


  • Notincredibly energy efficient. Sitting at a rating of A+, the Ecodan R744 HeatPump is not as energy efficient as most other air source units.
  • Limitedoutput options. This heat pump is only available in outputs of 4.5kW, making ita less powerful option within Mitsubishi's air source lineup.
Ecodan R744 Air Source Heat Pump

Ecodan R32 Ultra Quiet PUZ Air Source Heat Pump

Boastingan innovative and stylish look, the Ecodan R32 Ultra Quiet PUZ is a monoblocair source heat pump available in outputs of 6.0kW, 8.5kW and 11.2kW. Thisself-contained unit requires only a water and electric connection to beinstalled, and while slightly larger than the R744, is still fairly compact. Ithas been built for domestic use, satisfies development standards (MCS020), andfeatures something any homeowner can appreciate - a minimum energy efficiencyrating of A++. A built-in Melcloud WiFi system makes it easy to monitor andcontrol this heat pump from anywhere in the world through an internet-connecteddevice. It can operate in ambient temperatures as cold as -20°C, as warm as+35°C and has an impressive heating COP of 3.2.

Butabove all else, what really makes this heat pump stand out is its minimaloperating noise. As its name implies, the R32 is 'ultra quiet' and is amongMitsubishi's smoothest running heat pumps. It sits at a sound power level ofjust 58 dBA - three times quieter than that of previous models. This makes itan ideal option for homes with less property space and projects requiringflexible installation options.


Homeownerslove the Ecodan R32 Ultra Quiet PUZ for many reasons, including the following:

  • Superquiet. This heat pump is incredibly quiet and has a sound power level of 58dBA, three times quieter than previous models in its lineup.
  • Rangeof power options. The R32 Ultra Quiet is available in 6.0kW, 8.5kW and 11.2kWpower outputs, offering homeowners plenty of options to choose from.
  • Easyto install. Being a self-contained product, this heat pump only requires awater and electric connection to be installed. This makes it a viable optionfor many situations and homes.


Someof the potential drawbacks of owning an Ecodan R32 Ultra Quiet heat pumpinclude:

  • Largerenvironmental footprint. While still relatively environmentally friendly, thisheat pump's refrigerant has a higher GWP than some other Mitsubishi models at675.
  • Loweroperating temperature. The Ecodan R32 Ultra Quiet is capable of operating inambient temperatures as low as -20°C - slightly colder than the R744.
Ecodan R32 Ultra Quiet PUZ Air Source Heat Pump

Ecodan R32 Compact PUZ Air Source Heat Pump

Similarin style to the Ecodan R32 Ultra Quiet PUZ, the Ecodan R32 Compact PUZ Air SourceHeat Pump is a reiteration of the formerly mentioned model. Only this time,instead of solely focusing on quiet operation, the heat pump also features acompact design - measuring at a width and depth of 950 by 330 millimetres. It's10 centimetres less wide than the Ultra Quiet unit and about eight shorter inheight.

Interms of performance though, the R32 Compact PUZ packs a slightly smaller -although still impressive - punch than its counterpart. It's only available ina power output of 5.0kW and has a slightly lower Coefficient Of Performance of3.0. The energy efficiency rating stays the same for this product at A++ andits similar use of R32 refrigerant also gives it a GWP of 675.


Whyspring for the Ecodan R32 Compact PUZ Air Source Heat Pump? Here are some ofits best benefits:

  • Compactdesign. The R32 Compact PUZ's size is one of its greatest features. As one ofthe smallest heat pumps in Mitsubishi's catalogue, it's incredibly versatileand is a viable option for plenty of homeowners.
  • GoodCoefficient Of Performance. Although slightly lower than the Ultra Quiet model,the Compact PUZ heat pump boasts an above average COP when compared to otherair source products.
  • Goodoperating temperature range. This heat pump is able to maintain full operatingcapacity in temperatures as low as -20°C and those as hot as +35°C.


Arethere any downsides to choosing the Ecodan R32 Compact PUZ? Let's take a look:

  • Noisieroperation. The Ecodan R32 Compact PUZ is slightly louder than the R32 Ultra Quietwith a higher sound power level of 61 dBA.
  • Limitedpower options. While 5.0kW is likely able to satisfy most homeowners' needs,this heat pump is only available in one power output and may not be the bestoption for those who prefer more choice.
Ecodan R32 Compact PUZ Air Source Heat Pump

Ecodan R32 Zubadan PUZ Air Source Heat Pump

Builtfor larger, more load intensive applications, the Ecodan R32 Zubadan monoblocair source heat pump is the most powerful product on this list. It houses amassive 14kW of power and two fans for increased airflow, making it ideal foruse in situations where other heat pumps would struggle. This model is also thetallest on this list at 1350 millimetres in height.

TheEcodan R32 Zubadan PUZ uses R32 refrigerant and has a GWP of 675. It has a fairenergy efficiency rating of A++ and lower Coefficient Of Performance of 2.45.

Wherethis heat pump delivers the most value is in its functionality, offering agreat flow rate of over 40 L/min and having the ability to operate intemperatures as cold as -28°C.

TheR32 Zubadan is also a self-contained unit and only requires water and electricconnections to be installed.


Whywould someone choose to buy the Ecodan R32 Zubadan PUZ Air Source Heat Pump?Let's take a look at some of the product's most notable advantages:

  • Verypowerful. With an impressive 14kW output, this heat pump offers much more - insome cases over twice as much - power than other products in Mitsubishi's airsource collection.
  • Impressiveminimum operating temperature. The Ecodan R32 Zubadan PUZ is able to operate inambient temperatures as low as -28°C, making it among the toughest heat pumpson this list.
  • Easyto install. This product is completely self-contained and only requires anelectric and water connection to be installed - perfect for a range of homesand properties.


Althoughthe R32 Zubadan PUZ is popular, it does have some downsides. Here are the mostnoteworthy:

  • Large.The R32 Zubadan's impressive power comes with the caveat of a larger size.Although it is about the same width as other Mitsubishi heat pumps, it is muchtaller and therefore may not be the best option for some homes.
  • LowerCOP. This model logs a lower COP than its counterparts at 2.45. This can stillbe considered good for an air source heat pump, but is considerably less thanother products on this list.
Ecodan R32 Zubadan PUZ Air Source Heat Pump

Ecodan Coastal Protection Air Source Heat Pump

Withinthe range of air source heat pumps we just explored exists a subseries that'sbeen designed specifically for use in more coastal environments - EcodanCoastal Protection. This line offers adaptations of the  company's other models that are able towithstand the corrosive effects of salt water and air, making them a greatchoice for those who live near  theocean.


Thereare some great advantages to owning a Coastal Protection heat pump, like:

  • Uncompromisedperformance. While this series is built with special corrosion-resistant materials, it doesn't sacrifice any of thepower or functionality of Mitsubishi's standard models.
  • Longlifespan. The increased durability of the Ecodan Coastal Protection line meansthat these heat pumps are built to last and sure to deliver consistentperformance for years to come.
  • Availablefor all models.  Mitsubishi offers theEcodan Coastal Protection upgrade for all of the models in its air source heatpump range, giving customers plenty of choice.


Homeownersshould be aware of the potential downsides of choosing a Coastal Protectionheat pump, which include:

  • Specificinstallation requirements. Mitsubishi recommends that homeowners install theirCoastal Protection heat pumps away from direct exposure to sea spray, limitingtheir options of where on their property it can go.
  • Slightlyhigher price tag. Because of the added durability and materials used, thesemodels come with a slight price increase when compared to the standardversions.
Ecodan Coastal Protection Air Source Heat Pump

How Much Does A Mitsubishi Heat Pump Cost?

Heatpumps come in many different forms and with a range of different features. Thisis especially true when it comes to Mitsubishi - the brand has a very diversecollection of air source models, each with their own  unique capabilities. As a result, the cost ofthese products can vary significantly from one to the next.

Thatsaid, Mitsubishi heat pumps are generally more expensive than other brands onthe market.  A basic model from thecompany's air source range, for example, can start at around £6,000. More feature-rich models, meanwhile, cancost upwards of £12,000.

installationcosts should also be taken into account when budgeting for a Mitsubishi heatpump. While the company's products are designed to be easy to install, theprocess will still require the use of a professional contractor. As a result,homeowners can expect to pay several hundred dollars more for installation.

Agreat way to offset the cost of your new heat pump is to look into theRenewable Heat Incentive (RHI), a government-run program aimed at  encouraging the uptake of green heatingsolutions. Those who install a Mitsubishi heat pump may be eligible forquarterly payments over a seven-year period, potentially saving them thousandsof pounds in the long run.

Choosing The Right Mitsubishi Heat Pump For Your Home

Ifyou're  in the market for a new heatpump, Mitsubishi is definitely a brand worth considering. The company'sproducts are some of the most technologically advanced and energy-efficient onthe market, and come with a long list of features to choose from.

Butwith so many different models to consider, it can be tough to know which one isright for your home. Here are a few things to keep in mind that will help younarrow down your options and choose the best Mitsubishi heat pump for yourneeds.

Consider Your Climate

Oneof the first things you'll want to think about is the climate in your area. Ifyou live in an area with long, cold winters, you'll need a heat pump that'scapable of delivering enough heat to keep your home warm and comfortable.Conversely, if you live in a warmer climate, you won't need as much heatingpower and can focus on finding a model with great cooling capabilities.

Choose The Right Size

Anotherimportant factor to consider is the size of your home. Mitsubishi heat pumpsare available in a range of different sizes, and it's important to choose onethat's properly sized for your needs. If you get a unit that's too small, itwon't be able to effectively heat or cool your entire home. On the other hand,if you get one that's too big, it will end up costing you more money in thelong run.

Consider Your Budget

Ofcourse, one of the most important factors to consider when choosing a heat pumpis your budget. Mitsubishi models can vary significantly in price, so it'simportant to have a good idea of how much you're willing to spend before youstart shopping around. Once you have a budget in mind, you can start narrowingdown your options and finding a heat pump that's right for you. Keep in mindthough that the initial cost is not the only thing you should be thinking about- be sure to factor in the cost of running and maintaining the unit over itslifetime.

Compare Efficiency Ratings

Whencomparing different heat pump models, be sure to pay attention to theirefficiency ratings. This will give you a good idea of how much energy the unitwill consume and how much it will cost to run. In general, Mitsubishi heatpumps score fairly well, but they aren't all the same.

Somemodels are more efficient than others, so be sure to compare the ratings ofdifferent models before making your final decision.

Consider The Features

Finally,you'll also want to think about the features that are important to you.Mitsubishi heat pumps come with a wide range of different features, so it'simportant to take the time to figure out which ones are most important to you.Do you want a heat pump with a built-in thermostat? One that can be controlledremotely? Or one with specific settings for different rooms in your home? Makesure  to think about what you want beforeyou start shopping around.

Mitsubishi is atrusted name in the world of heat pumps, and for good reason. The companyoffers a wide range of high-quality products that are designed to provideefficient and effective heating for any home. By  considering your climate, budget, and thefeatures that are important to you, you can narrow down your options and choosethe best Mitsubishi heat pump for your needs.

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