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Five Steps to Getting an Air Source Heat Pump Installed


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Even though air source heat pumps have been available for a long time, more people are thinking about getting one for their homes. They want to be more eco-friendly, use less gas for heating, and save on energy costs. Heat pumps work in a way that’s different from traditional methods like gas boilers. So, if you’re thinking about getting one for your home, it’s important to think about it a bit more.

Let’s break down what’s involved in getting a heat pump in your home in five steps. It starts with being curious about heat pumps and goes all the way to enjoying the benefits of having a more eco-friendly way to heat your home.

What is an Air Source Heat Pump System?

An air source heat pump, also known as an air-to-water source heat pump, works by taking heat from the outside air and using it to warm water. We can then use this heated room to warm up your rooms through radiators or underfloor heating. Additionally, it can heat the water stored in a hot water cylinder for your taps, showers, and baths.

The process starts with the heat from the air getting absorbed into a fluid. This fluid then goes through a heat exchanger in the heat pump, where its temperature increases. Finally, this heat transfers to the water, making it warm for various uses in your home.

For more detailed information on how a heat pump operates, including insights into potential savings, system design, and control, you can research more.

Types of Air Source Heat Pumps

Air source heat pumps are like wizards for home heating. Before we explore them, know this: there are two types – monobloc and split systems. Now, let’s uncover the magic of each and find the best fit for your home. 

Both the heat pumps fight the same villain, cold air, but they have different headquarters and secret weapons.

Team Monobloc: Think of them as the “All-in-One Avengers.” They live in a single, powerful outdoor unit, like Iron Man’s tower. This unit sucks in cold air, transforms it into heat, and sends it straight into your home’s heating system and hot water tank, just like Thor sending lightning bolts. They’re super compact and easy to install, but they might not be as powerful as some other teams.

Team Split: Picture them as the “Dynamic Duo,” with one member inside your home and another outside. The outdoor unit, like Batman in the Batcave, gathers cold air and turns it into heat. Then, it sends this warm energy to the indoor unit, like Robin relaying messages. The indoor unit then uses the heat to warm your home and water, just like Robin setting off smoke bombs. This team is more flexible and powerful, but it takes a bit more planning and installation, like building the Batcave.

So, which team is right for you? It all depends! 

Team Monobloc: If you live in a smaller home and want a simple solution, they’re perfect.

Team Split: If you have a bigger home or need more power, they’re the best choice.

Air Source Heat Pump Installation Cost

The cost of an air source heat pump depends on a few things: how big it is, the size of your home, whether it’s a new or existing property, and if  they call for any changes for heat distribution. On average, it’s about £14,000. To get a good idea for your home, talk to at least three installers for their quotes. Plus, if you’re in England or Wales, there’s a scheme that gives you £7,500 toward getting one.

How to get Air Source Heat Pump Installation in 5 Easy Steps

Get Information About Heat Pumps

When considering a heat pump, start by checking if it’s right for your home. Despite the various types available, not every home is prepared for one.

To ensure efficient performance, your home needs specific features. The Energy Performance Certificate (EPC) rating should be D or above, and you should have adequate insulation in your walls and loft. If these criteria aren’t met, it’s advisable to enhance your home’s energy efficiency before seriously considering a heat pump.

Get Technical Survey

To have a heat pump in your home, you need enough space outside, either on the ground or an outer wall. The space required depends on the type of heat pump that fits your needs. No matter the size, it’s important to put the heat pump where there are no things blocking the air. Inside your home, you also need space for a hot water cylinder to provide hot water.

If you’re not sure if your home is right for a heat pump, you can start with an online survey. During the survey, they’ll ask you simple questions about your home to see if it’s a good fit and figure out what type of heat pump you might need.

Consulting a Heat Pump Expert

After checking if a heat pump could work for your home, the next step is talking to a heat pump expert. This means they’ll take a closer look at your property, especially the Energy Performance Certificate (EPC), and figure out if you need any upgrades before installing the heat pump.

The expert will discuss the benefits of having a heat pump, how much it might cost, and the potential savings on your energy bills. This is also your chance to learn more about how the technology works and what will happen during the installation process.

Moreover, you’ll get detailed information about your property and any necessary upgrades, ensuring everything is clear before moving forward.

Technical Survey for Air Source Heat Pump Installation

Before deciding on a heat pump, your home needs a unique plan. This is where a technical survey comes in – a crucial step in the heat pump installation process. First, during this survey, a specialist will visit your home, assess the rooms, take measurements and photos, and chat with you about your heating habits and needs.

After the survey, a personalized design for the heat pump system will be created. This ensures that the system installed is the most effective solution. Additionally, it’s perfectly tailored to your property and your heating requirements.

Heat Pump Installation: A 2-3 Day Process

Installing a heat pump system typically takes two to three days. However, the duration may vary depending on additional work, such as fitting new radiators or a hot water tank. Despite potential disruption during installation, it’s crucial to consider the advantages.

Your home will benefit from more energy-efficient heating, an updated system, and future-proofed radiators—especially if you’re concurrently undergoing a renovation.

Once operational, the system requires minimal maintenance and can provide heating and hot water for about 20 years on average.

To ensure continued efficiency, here’s a recommendation: Hire a qualified engineer to do service of your heat pump yearly.

Air Source Heat Pump Grants

As mentioned earlier, setting up a heat pump in a regular three-bedroom house costs about £10,000 – £20,000. This covers a new heating system with an air source heat pump, hot water cylinder, radiators, and all the work to install it.

The government is offering several air source heat pump grants under its ECO4 Scheme. This programme gives eligible homeowners a grant of £7,500 to help with the cost. Your installer can apply for this grant, and they’ll take that amount off your final bill.

For those with lower incomes, there are more ways to get help. Depending on your income and where you live in the UK, you might qualify for a grant or funding through energy efficiency support schemes. You can check if you qualify for support online.


To sum up, air source heat pumps offer energy-efficient solutions for home heating. Understanding the nuances between monobloc and split systems empowers homeowners to make informed choices. Ultimately, your choice depends on your specific needs and the magic you want for your home.


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