Mitsubishi Ecodan Air Source Heat Pump Review

If you're looking to have an air source heat pump (ASHP) installed, you're probably overwhelmed by the options, costs and which size is right for you. 

In our review of the Mitsubishi Ecodan, we'll cover:

• A quick overview of this page
• The Mitsubishi Ecodan product range
• Which properties the Mitsubishi Ecodan is most suited to
• How much the Ecodan costs to install
• Reviews of the Mitsubishi brand
• The top features of Mitsubishi air source heat pumps

Overview: The Mitsubishi Ecodan Source Heat Pump

This review is a 10-minute read. So if you’re short on time, simply read this quick overview and bookmark this page for later!

The Mitsubishi Ecodan air source heat pump range includes units suitable for 2-5 bedroom properties. Within their range they have units that:

• Are low noise (R32 Ultra Quiet, operating at 45dB)
• Work at high temperatures (R290, which works at a flow temperature up to 75°C) 
• Are suitable for larger residential properties (R32 Zubadan PUZ Monobloc)
• Can be installed in properties where space is at a premium (R32 Compact PUZ Monobloc)

Expect the average installation cost for a Mitsubishi air source heat pump to be in the region of £12,000. 

However, thanks to the government’s Boiler Upgrade Scheme grant, you’ll be entitled to £7,500 when your installation is installed and commissioned by a MCS accredited installer. This drops the average cost of installation to £4,500. 

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Overall, company reviews online score Mitsubishi Electric at 4.5/5 stars. 

With a long warranty of up to 7-years, high efficiency (typically 320%), low noise and high flow temperatures, Mitsubishi is one of the best air source heat brands available in the UK. 

Get prices on the most suitable Mitsubishi Ecodan unit, by using our clickable air source heat pump tool here. 

Mitsubishi Ecodan Review

Mitsubishi Ecodan Product Range

The Mitsubishi Ecodan range is fairly big and includes: 

• Ecodan R32 Ultra Quiet PUZ Monobloc (6kW, 8.5kW, 11.2kW)
• Ecodan R290 (5kW, 6kW, 8kW)
• Ecodan R32 Compact PUZ Monobloc (5kW)
• Ecodan R32 Zubadan PUZ Monobloc (14kW)

As you can see, you’ll be able to find units as small as 5kW, up to a maximum of 14kW within the Ecodan range.

Which Properties Are Mitsubishi Ecodan ASHPs Suitable For?

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Due to the huge range of heat pumps in the Ecodan range, they’ll be a pump suitable for almost all residential properties in the UK.

One of our favourites is the R32 Ultra Quiet PUZ Monobloc. As the name suggests, it’s designed to be extremely quiet, operating as low as 45 dB(A). But thanks to the R32 refrigerant used, it's also incredibly efficient too, with an A++ ErP efficiency rating.  

Planning permission for heat pumps is fairly loose, not required in many cases. However, noisy heat pumps (especially those can be heard from a neighbouring property) would need planning. Due to the low 45db(A) noise rating of the Mitsubishi Ecodan Ultra Quiet, you'll be covered by permitted development rules and won't need planning permission. 

Other Mitsubishi air source heat pumps - such as the Ecodan R290 - focus on working at high temperatures; it can operate at up to 75°C. This is particularly important for properties where insulation isn't the best and a standard heat pump wouldn’t suffice.

Mitsubishi even produces the Ecodan R32 Compact (suitable for smaller domestic properties) and the Ecodan R32 Zubadan PUZ Monobloc that focuses on the large domestic property market. 

Remember, dozens of factors affect what size ASHP you need, as well as which is the most suitable unit. This includes:

• How big your property is
• Radiator quantity, size, efficiency, and whether or not you plan to upgrade them
• The temperature you keep your central heating at on average
• The quality of your property's insulation
• The list goes on...!

Jump over to our clickable air source heat pump tool here…

Fill out a few details and we’ll give you not just prices for your installation, but determine exactly which brand, model and size ASHP is the most suitable for your property.

Installation Costs For Mitsubishi Air Source Heat Pumps

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As you'll see from any reviews of Mitsubishi air source heat pumps, their life expectancy, efficiency and noise levels are all up there with the best air source heat pump brands on the market. Yet, the installation costs sit in the mid-range, offering excellent value for money. 

Installation costs are similar to that of the Vaillant aroTHERM (see our review here). For an average 3-bedroom semi-detached property in the UK, you’d expect to pay somewhere in the region of £10,000-£12,000 for a Mitsubishi air source heat pump. 

For this, you’d be looking at a unit like the Ecodan R290 which is available in a range of sizes including: 5kW, 6kW, 8kW. For a typical 3-bedroom property, you’d most likely be looking at the 8kW unit. 

Although the total installation cost for a Mitsubishi air source heat pump is likely to be closing in on £12,000, that doesn’t take into account current government grants for air source heat pumps. 

The most commonly used government grant is the Boiler Upgrade Scheme. With this, you’ll be able to get up to £7,500 off the price of your Mitsubishi air source heat pump when replacing a boiler that uses fossil fuels (gas, LPG or oil). 

Unlike other grants that require households to be receiving a means-tested benefit, the Boiler Upgrade Scheme is available to the majority of UK households. 

Our air source heat pump tool calculates the best unit for your property and will automatically apply a £7,500 discount thanks to the Boiler Upgrade Scheme grant.

Put simply, the expected installation cost for your Mitsubishi air source heat pump is likely to be £4,500 for the average 3-bedroom semi-detached property, after accounting for the Boiler Upgrade Scheme grant.

Mitsubishi Reviews

A substantial purchase of this kind deserves a little due diligence. And there’s no better way to check out how good a company is than digging through their reviews on websites such as Trustpilot. 

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Your air source heat pump is likely to last 25 years and beyond. So, it’s not just the quality of the unit on day 1 you need to think about, but also how a company deals with its customers in terms of after-sales care. 

As you can see from the reviews of Mitsubishi Electric on Trustpilot, they’re averaging 4.5 stars from over 400 reviews, which is well above average. 

This specific customer review of their air source heat pump annual service shows that Mitsubishi goes above and beyond when it comes to after-sales care. 

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And this is why Mitsubishi is considered one of the best air source heat pump brands in the business. Not only do they offer an exceptional product, but excellent after-sales care too.

Top Features of The Mitsubishi Ecodan ASHP

Efficiency 

Mitsubishi air source heat pump’s efficiency is up there with the best brands in the business. According to their fact sheet here, their Ecodan range will produce 3.2kW of energy for every 1kW of energy consumed. 

It does this by using 1kW of electrical energy, combined with 2.2kw of low heat energy from the air. It then uses a combination of these to heat up the refrigerant and in turn, heat the water / heating system in your home. 

Overall, this equates to a 320% efficiency rating. If we directly compare that to the most efficient combi boilers it’s much higher; even the most efficient boilers only operate at 94% efficiency.

Warranty

Warranty is one of the main things you should be focusing on when purchasing an air source heat pump. This is a huge investment, and the longer you can protect it the better. 

Many heat pump manufacturers only offer a short warranty (2-years). This is simply not enough to protect an installation that costs thousands of pounds.

The base warranty on the majority of the Ecodan range is 3-years for a standard account holder. However, this can be extended to a 5-year warranty when you use a Mitsubishi Accredited Installer, and up to 7-years when you use one of their Business Solutions Partners.

Get prices on your Mitsubishi Ecodan inclusive of a long warranty by jumping over to our air source heat pump quote page here. 

Noise

In general, heat pumps are noisy. They make a whirring sound when operational and depending where they're installed and how noisy they are, some consider them a nuisance. 

That's why many manufacturers offer a "quiet" model. In the case of Mitsubishi, it's the Ecodan R32 Ultra Quiet. This model runs at an incredibly low 45dB, which is comparable to the likes of the average gas boiler. 

For a direct comparison though, one of the most popular heat pumps on the UK market currently is the Vaillant aroTHERM Plus,this operates at 54dB.

Put simply? The Mitsubishi Ecodan R32 Ultra Quiet is one of the quietest air source heat pumps on the market. 

High Operating Temperatures

Heat pumps work most efficiently at lower temperatures. Typically, a flow temperature of 40-55°C is ideal. For every 5°C increase in flow temperature on the average ASHP, you'll see a drop of 9.2% in efficiency.

High temperature heat pumps are able to operate efficiently at temperatures of up to 75°C. This is particularly important in older properties that may not be well insulated. An air source heat pump operating at 40-55°C simply wouldn’t keep those properties warm. 

Looking for a high temperature heat pump? You'll want the Ecodan R290. The R290 refrigerant used allows the unit to work at high temperatures, but still high efficiency. 

You can get fixed prices on high temperature heat pumps by using the clickable form on our air source heat pump page here.