When looking for the best air source heat pumps in the UK, we look at the performance, cost and efficiency of Mitsubishi Ecodan.

Disclosure: FMB Home Picks is dedicated to providing independent recommendations and reviews of products and services for the home. We may earn affiliate commissions when you purchase from links on our site. Learn more.
The Ecodan air source heat pump is Mitsubishi’s flagship air source heat pump. They are MCS certified and Mitsubishi claims the pumps are designed for UK weather conditions.
The Ecodan Monobloc range includes various heat pumps. The Ecodan R32 Ultra Quiet PUZ monobloc air pump is very quiet and meets almost all design permit requirements. It can be controlled remotely via an app. The heat pump is available in 6kW, 8.5kW and 11.2kW options which means it will be sustainable for most properties.
The Ecodan R32 Compact PUZ monobloc air source heat pump is quiet and much smaller than other heat pumps in this range. It is only available for the 5 kW model and is designed for small spaces.
Finally, the Ecodan R744 QUHZ-W40VA Monobloc Air Heat Pump delivers 4.5 kW output and can be combined with multiple units to heat large spaces. This unit is designed for apartments or small houses where domestic water demand is high. Its minimum operating temperature is -15°C, while others have a minimum operating temperature of -20°C.
While all devices have received high performance ratings, the Ecodan series has received less than stellar reviews, earning a measly 1.9-star rating on Trustpilot, which suggests the company hasn’t quite lived up to its promises.
The Mitsubishi Ecodan Monobloc air source heat pump is an efficient and low noise heating solution. It is very quiet and can be controlled remotely via the Mitsubishi app. It is available in various capacities from 6kW to 11.2kW, with a minimum operating temperature of -20°C and an A++ ErP efficiency class.
Features: the new model is three times noisier than the previous version, and also quieter. Mitsubishi claims that the sound level of the PUHZ Ultra Quiet Monobloc is the same as that of a regular library!
Key advantage: Ecodan heat pumps can be easily controlled via the MELCloud app. This single app controls the hot water and heating functions. The app also allows homeowners to use frost protection and vacation modes, set weekly schedules, manage operating costs, and monitor real-time weather information from their mobile device.
Although air heating systems are often more affordable than ground air pumps, they still require a large investment and can affect your comfort for better or worse. It is best to consider all the alternatives, as well as their pros and cons.
Mitsubishi Ecodan Monobloc heat pump systems are equipped with proprietary inverter compression technology. This allows the heat pump to maintain the exact temperature required at all times. When the demand for heating increases, the inverter speeds up the cycle, allowing more heat to circulate around the house.
Inverters are far superior to traditional heating methods that use fixed speed compressors, resulting in fluctuating room temperatures and wasting energy.
The disadvantage is that if the temperature drops below -20°C, it will be difficult for the heat pump to extract enough heat from the outdoor air, so the temperature will drop. If possible, homeowners should use a hybrid or backup heating system if they live in very cold climates. Most properties will require larger radiators when purchasing an air source heat pump, as smaller radiators will not work as efficiently. It is also important to properly insulate your home to get the most out of your heat pump.
The Mitsubishi Ecodan Monobloc is an efficient and compact air source heat pump that operates from -15°C to -20°C, but you can also try the Daikin Altherma. It’s a little more expensive than many Ecodan units, but they perform better in harsh environments and the company has a great reputation.
You can look at the Nibe F-series or some Danfoss units that are in the same price range as Mitsubishi. They are easy to install and provide high performance and excellent performance. Calorex air source heat pumps are another good option as they use very little energy but perform poorly at low temperatures so should not be used in areas where 5°C is common.
Danfoss offers some of the most affordable air source heat pumps on the market. Here’s how it compares to some of the other top brands:
Air source heat pumps generally do not require much maintenance. However, for complete peace of mind, it is recommended to check the water pump before winter. Filters, coils and fans should be checked annually for debris and cleaned.
If you notice a decrease in the performance of your air source heat pump, be sure to seek support from a qualified and approved technician.
Mitsubishi Ecodan Monobloc air source heat pumps are available with a wide range of add-ons and accessories (at an additional cost), including protective covers, pre-installed cylinders, mounting brackets and more.
Homeowners can choose between an advanced wireless controller or a cloud controller web app to remotely monitor and control their system.
“The way we design, build, heat, power and recycle homes must change rapidly, and renewable heating is an important part of our future. Reduce energy bills and emissions for virtually any home.”
“Mitsubishi’s Ecodan range of air source heat pumps is the ideal solution for homes that need a new heating system that will reduce energy costs and reduce carbon emissions. Ecodan heat pumps are low maintenance, quiet in operation and offer a wide range of outputs to suit your needs. customer. most sizes New or old.”
“Please don’t waste your money on Ecodan. I’m trying to take mine off. They cost a fortune and I have never had a hot shower since they were installed. And the heating is terrible. installation of a wood-burning stove for heating the house.
“Within 12 months of purchasing a Mitsubishi electric heat pump, the main board and fan motor had to be replaced, which took over four weeks and I would never advise anyone to buy a Mitsubishi electric heat pump.”
“Last summer we installed an Eco Dan heat pump. It was an expensive process, but I used some money that I recently inherited, thinking it would be an investment and save money in the future. Unfortunately, due to a system failure, I spent a fortune. We had no control over the heating system, even on the hottest days it ran at full capacity. The pump worked even when the heating and hot water were turned off. Our plumber said it was Ecodan’s fault, so we paid about £300 for a Mitsubishi engineer, to check it out. They said the wiring was wrong but the problem persisted. Mitsubishi wanted us to pay again to call an engineer even though they didn’t fix the problem sooner. I called 3 times last week emails were sent but no one doesn’t listen. Our electricity bills have skyrocketed. My advice is to stay away from their product. It causes endless stress and huge wastage.”
When it comes to air source heat pumps, the Mitsubishi Ecodan Monobloc doesn’t bother us too much. The minimum operating temperature and efficiency are acceptable, the price is reasonable, and the power output is enough to heat a standard three-bedroom house.
If you have a small house or apartment, Mitsubishi’s 5 kW compact air source heat pump is a great and environmentally friendly way to heat your home at a low cost.
The only thing that made us think was their bad customer reviews and low rating. Incorrect installation is in most cases the root cause of poor performance of a heat pump, which really highlights the need to hire a reputable, accredited installer to guide you when purchasing an air source heat pump (of any brand).
To ensure the accuracy of this review, we have read hundreds of customer reviews online (including Trustpilot and Google reviews from the UK and Europe), as well as accessed and reviewed professional forums, media articles and white papers.
We have compiled a Mitsubishi Ecodan Monobloc scoring system of 100 points, which includes:


Post time: Nov-24-2022