Where is the Best Place to Install an Air Source Heat Pump in the UK?

Heat pumps are a fantastic alternative to traditional boilers, offering efficient heating solutions for homes across the UK. More and more people are starting to realise the benefits of investing in a heat pump. Not just because of the promise of lower energy bills, but also the peace of mind that comes from making a greener choice.

The growing popularity is further fuelled by the Boiler Upgrade Scheme, a generous government incentive that provides up to £7,500 towards the installation of a heat pump. With such support available, it’s no surprise that people are taking a closer look at whether their property is suitable for this heating technology.

However, as you consider swapping your old boiler for an air source heat pump, a few important questions might spring to mind, such as where exactly you should install it. Location plays a crucial role in both the pump’s performance and how seamlessly it fits into your daily life.

In this article, we’ll first break down the possible locations for an air source heat pump as well as discuss the factors that can help you decide the very best place for your unique home and needs.

Prefer to speak directly with a heat pump specialist? Simply fill out the form below and one of our experts will be in touch to provide you with a personalised quote:

Where is the Best Location to Install a Heat Pump?

When it comes to installing an air source heat pump, the best location is usually outside your home, ideally in an open space with plenty of airflow around the unit. You’ll want to avoid cramped corners or areas blocked by walls, fences or plants as the pump needs to draw in fresh air efficiently to work at its best.

The spot should also be reasonably close to your property to keep pipework short and maximise the heat pump's efficiency. Noise is also a consideration and we recommend placing the unit away from bedroom windows or neighbour’s living spaces in order to keep things quiet and comfortable for everyone.

What Air Source Heat Pump Components Need to be Installed?

It’s easy to picture just the outdoor unit when you think about a heat pump but there are a few key components you’ll need to install. Here they are, along with what each part does and where it’s best to put it:

• Outdoor Unit: This is the main part of your heat pump system, usually a large box with a fan and grille. It works by drawing in air from outside and extracting heat from it. It’s best to install the outdoor unit in an open, well-ventilated spot outside your home, away from any obstructions like walls, fences or thick plants.

• Indoor Unit: This component transfers the heat drawn from outside into your home’s heating system. Sometimes, especially in smaller systems, the indoor unit may just be a small box mounted on an interior wall. The ideal place to install the indoor unit is inside your utility room, airing cupboard, kitchen or another sheltered spot where it’s easily accessible for servicing and won’t disturb your living space.

• Hot Water Cylinder: The hot water cylinder stores the water heated by your system, making sure you have hot water on demand for showers, baths and taps. It often looks like a traditional tank and needs to be insulated to keep the heat in. It is best to install the hot water cylinder indoors, usually in an airing cupboard, utility room or integrated storage area close to your main bathrooms, so your hot water supply is always quick and reliable.

At Glow Green, we’re happy to offer advice on the best places to install each component of your air source heat pump. So if the above recommendations don’t quite fit your home, there’s no need to worry.

Factors to Consider When Positioning an Air Source Heat Pump

As we've mentioned, getting the location right is key to boosting an air source heat pump's efficiency, lifespan and overall comfort for you and your neighbours. Not every spot outside your home is suitable, so it’s important to think through a few practical considerations before your installer gets to work.

Here are the main factors you should keep in mind:

Make Sure the Heat Pump Is Easy to Access

Choose a spot where your air source heat pump is straightforward to reach for both you and any professional who might need to inspect, service or repair it. Positioning it too close to walls, tight corners or behind obstacles can make routine maintenance more difficult and time-consuming. Keeping the area around your unit clear not only helps with upkeep but also extends the life of the system by ensuring it’s checked regularly for issues.

Pick a Location That Keeps Things Quiet for You and Your Neighbours

While modern air source heat pumps are designed to be relatively quiet, they do produce some noise when operating. To avoid disturbances, especially at night, steer clear of placing the unit directly outside bedroom windows, main living areas or close to patios where you relax. Similarly, think about your neighbours as well. Ultimately, if possible, choosing a discreet location will help keep everyone happy.

Make Sure There’s Plenty of Air Flow Around the Unit

To work effectively, your heat pump needs a steady supply of fresh air. The best position is one with open space on all sides. Ideally, allow at least one to two metres of clearance around the unit. Avoid tight spaces, corners or areas close to fences and plants that might block airflow. Good ventilation prevents the system from recycling cold air back into itself which could otherwise lower its efficiency and performance.

Select a Spot That Offers Some Shelter or Protection

Your heat pump doesn’t need to be completely covered, but a bit of protection from strong winds and direct exposure to the elements will go a long way. Consider a position that shields your unit from prevailing winds, heavy rain and snow (while still allowing it to 'breathe'). You might elevate it slightly to keep it out of standing water or snow drift. Also, avoid placing it right next to paths where cold air could cause ice in winter.

If you’re worried about outdoor space or unsure whether your home is suitable for an air source heat pump, check out our article, Is My Home Suitable for an Air Source Heat Pump?, to learn more.

Alternatively, you can request a heat pump quote. One of our specialists will get in touch to answer your questions and guide you through your options.

Unsuitable Locations for Air Source Heat Pumps

Now that you know what to look for when choosing the best spot for your air source heat pump, it’s just as important to understand which locations you should avoid and why.

Remember, choosing the wrong place can lead to reduced efficiency, unwanted noise or even problems with planning regulations, so being aware of unsuitable locations will help ensure your system works smoothly and legally.

Of course, qualified heat pump installers will always ensure your air source heat pump is placed in a spot where it can operate safely, efficiently and effectively.

Are There Rules for Installing an Air Source Heat Pump?

Luckily, there aren’t many complicated regulations when it comes to installing an air source heat pump, much like the rules for installing solar panels. Most people in the UK will find the process quite straightforward, especially when compared to other home improvement projects. In most cases, you won’t need planning permission, and you’re free to consider the layout that works best for your property.

As we’ve already mentioned, the government has now also removed the rule that required your air source heat pump to be installed at least one metre from your neighbour’s property, making it easier for more people to switch to low-carbon heating solutions. By relaxing this rule, the government hopes to encourage wider adoption of heat pumps as part of the UK’s commitment to reducing carbon emissions and meeting climate targets.

Despite this, there are still a few important rules and regulations you need to follow to keep your installation legal and running smoothly:

• Your heat pump must be installed on a suitable surface and securely fixed.

• The outdoor unit should not be placed on a pitched roof.

• You can only install one heat pump per property without planning permission.

• The unit should not be visible from the highway if your home is in a conservation area or is a listed building.

• Avoid placing the heat pump so that it causes noise disturbance to your neighbours.

What Surface Should an Air Source Heat Pump Be Installed On?

It’s crucial to put an air source heat pump on a firm, flat and level surface. This surface needs to support the full weight of the heat pump and help minimise any noise or vibrations that the unit might produce. Typical options include a solid concrete base or paving slabs placed on well-compacted hardcore. If you don’t already have a suitable area, your installer will need to create one before installation.

Wall-mounting is possible for some models, but this should only be done following manufacturer guidance and with the right mounting kits. Regardless of location, avoid placing the heat pump on uneven ground, and as already mentioned, always leave clear space around it for airflow and easy maintenance.

Key Takeaways

Thanks to new regulations, installing a heat pump has become much simpler and more flexible. It’s best to install your air source heat pump outside your home in a well-ventilated, open area where there’s plenty of space around the unit to allow for good airflow.

It's important to also keep the following factors in mind when determining the best location for your air source heat pump:

• Choose a spot that allows easy access for servicing and maintenance.

• Opt for a location that minimises noise for both you and your neighbours.

• Ensure the unit has ample space around it for unrestricted airflow.

• Look for an area that provides some protection from harsh weather.

Adequate clearances matter, not just for a heat pump's efficiency, but also for reducing noise and making sure your installer can access it for any future checks or servicing. Indoors, your installer will help you find the best spot for the hot water cylinder, typically in a utility area or airing cupboard.

While professional installers, like Glow Green, will handle most of the technical details, it’s still helpful to understand what’s involved. Remember, a good location will help ensure your system runs efficiently, keeps noise to a minimum and avoids unnecessary complications.

Best Location for Air Source Heat Pump FAQs