If you are thinking about switching to a low carbon heating system, you have probably come across air source heat pumps. They are becoming more common across the UK, and for good reason. They are efficient, reliable and can significantly reduce your energy bills when installed correctly.
At Green Energy Homes, we supply and install air source heat pumps for homeowners who want a smarter, cleaner way to heat their property. In this guide, we explain how air source heat pump installation works, step by step, so you know exactly what to expect.
What is an air source heat pump?
An air source heat pump is a system that takes heat from the outside air and uses it to warm your home and hot water. Even when it feels cold outside, there is still heat energy in the air. The heat pump extracts that energy, compresses it to increase the temperature, and transfers it into your heating system.
Instead of burning fuel like a gas or oil boiler, it runs mainly on electricity and moves heat rather than creating it. That is why it can be much more efficient than traditional systems.
Step 1: Home assessment and survey
Every installation starts with a proper assessment. At Green Energy Homes, our experienced team visits your property to carry out a full heat loss survey. This tells us how much heat your home needs to stay warm during the coldest days of the year.
We look at insulation levels, window quality, room sizes and your existing heating system. This step is essential because a heat pump must be correctly sized. Too small and it will struggle. Too large and it will not run as efficiently as it should.
We also check outdoor space to find the best location for the unit. The system needs good airflow and a solid base, usually on the ground outside the property.
Step 2: System design
Once we have the survey results, we design a system tailored to your home. This includes choosing the right size heat pump and checking whether your radiators or underfloor heating are suitable.
Heat pumps work best at lower flow temperatures than gas boilers. In some homes, we may recommend upgrading certain radiators to ensure you get the comfort you expect. If you already have underfloor heating, that is often an ideal match.
We also plan the hot water cylinder. Most heat pump systems use a specially designed cylinder to store hot water efficiently.
Step 3: Preparing for installation
Before installation day, we make sure everything is ready. Our friendly team will explain the timeline and what access we need. In most cases, installation takes between two and five days depending on the size of the property and the level of upgrades required.
We aim to keep disruption to a minimum. You will usually still be able to stay in your home while the work is carried out.
Step 4: Installing the outdoor unit
The outdoor unit is the part that collects heat from the air. It is mounted on a solid base, often a small concrete pad, and positioned to allow good airflow around it.
The unit is connected to your home through insulated pipework. This carries the heated fluid inside to your heating system. We carefully route pipework to keep it tidy and well protected.
Modern air source heat pumps are much quieter than many people expect. When installed correctly, they produce a gentle hum similar to a fridge.
Step 5: Installing or upgrading indoor components
Inside your home, we install or connect the hot water cylinder and integrate the heat pump with your existing heating system. If radiator upgrades are needed, we carry these out at this stage.
We also install controls so you can easily manage your heating and hot water. Many systems come with smart controls that allow you to adjust settings from your phone.
Our experienced installers make sure everything is fitted neatly and safely, in line with UK regulations and manufacturer guidelines.
Step 6: Testing and commissioning
Once everything is installed, we test the system thoroughly. This is known as commissioning. We check pressure levels, flow rates and electrical connections to ensure the heat pump is running efficiently.
We also set the system up to match your home’s heating requirements. Correct setup is key to performance and long term savings.
Before we leave, we show you how to use the controls and explain how the system works in everyday terms. We want you to feel confident, not confused.
What happens after installation?
After installation, your air source heat pump will provide steady, consistent heat. Unlike a traditional boiler that blasts high temperatures in short bursts, a heat pump works best when it runs at a lower temperature for longer periods.
You may notice your home feels more evenly heated. Many homeowners also find their energy costs become more predictable.
Like any heating system, a heat pump needs regular servicing to keep it running at its best. We can advise you on maintenance and ongoing support.
Is it worth it?
For many UK homeowners, the answer is yes. Air source heat pumps can lower carbon emissions, reduce reliance on fossil fuels and, when paired with good insulation, cut running costs over time. With government incentives available in many cases, the upfront investment can also be more manageable than you might think.
The key is proper design and professional installation. That is where we come in.
At Green Energy Homes, we supply and install high quality air source heat pumps with a friendly, experienced team who care about getting it right. We take the time to assess your home properly, design a system that suits your needs and install it to the highest standard.
If you are considering an air source heat pump and want clear advice you can trust, get in touch with Green Energy Homes today. We are here to help you make the switch with confidence.
