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Air Source Heat Pump Installation

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Air Source Heat Pump Installation in Hampshire

Are you a Hampshire homeowner looking for ways to cut your energy bills and reduce your environmental impact? If so, air source heat pumps can be the answer you’ve been searching for. In this comprehensive guide, we’ll explore the benefits of air source heat pump installation in Hampshire and why you should consider taking the leap into renewable heating.

Elevate your comfort with SL Energy’s Air Source Heat Pump Installations. Pioneering Sustainable Heating for Over 30 Years.

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What is an Air source heat pump?

Air Source Heat Pump project photo

An air source heat pump (ASHP) is a renewable technology that extracts heat from the air to provide indoor heating or water heating.

It works by absorbing heat from the outside air, even in cold weather, and then raising the temperature to warm your space and water.

 

Air source heat pumps offer a more environmentally friendly option compared to traditional heating systems dependent on fossil fuels. They can notably cut down carbon emissions and reliance on non-renewable energy.

 

By using heat from the air, which is an essentially limitless resource, ASHPs contribute to lowering the carbon footprint of heating systems, playing a part in addressing climate change.

The UK government promotes air source heat pumps (ASHPs) to support low-carbon and renewable energy technologies. People get help to use ASHPs in homes and businesses.

This helps make energy use better, reduces pollution, and supports the country’s goal to have zero carbon emissions.

Using air source heat pumps in the Hampshire fits with wider environmental goals and plans, like those in the Clean Growth Strategy and the aim to reach zero carbon emissions by 2050. ASHPs help reduce pollution in heating by lowering carbon emissions, which are a major contributor to overall emissions.

Air Source heat Pump Installation Process

Benefits of Air Source Heat Pumps for Hampshire Homes

Reduced Energy Bills

One of the most appealing aspects of air source heat pumps is their ability to deliver significant savings on your heating costs. Hampshire homeowners can expect to see lower bills compared to traditional gas boilers, thanks to the high efficiency of heat pumps.

Government Grants

The Boiler Upgrade Scheme can offer substantial financial support for homeowners in Hampshire looking to install an air source heat pump. The grant aims to make green heating solutions more accessible and is a key incentive for those considering the switch.

Eco-Friendly Heating

Lowering your carbon footprint is a priority for many of us. By harnessing the power of the outside air, air source heat pumps provide an eco-friendly heating solution that can reduce your home's impact on the environment.

Year-Round Comfort

Unlike conventional heating systems, air source heat pumps can both heat and cool your home. This versatility ensures that you'll stay comfortable no matter the season, all while using a single, energy-efficient system.

Air Source Heat Pump Infographics

Air Source Heat Pump Installation Guide in 2026

Air Source Heat Pumps (ASHPs) are gaining popularity for their efficiency and sustainability in heating homes and businesses. This guide walks you through the key stages of ASHP installation, helping you make informed decisions about adopting this technology.

Air Source heat pump Diagram

Air Source heat pump Diagram
Air Source Heat Pump Pipeline Schematic

We will consider factors like heating capacity, energy efficiency (COP), climate compatibility, brand reputation, and budget when choosing your ASHP. We will prioritize a system that suits your specific climate and offers long-term energy savings.

Site Assessment & BUS Grant

Before installation, a qualified installer evaluates your heating needs, considering your home’s size, insulation, and existing system. They identify suitable locations for outdoor and indoor units based on space, sunlight, noise, and accessibility.

The optimal ASHP size is determined for efficient performance by means of a full room by room heat loss calculation. Your installer will then apply for the £7500 BUS grant on your behalf.

Equipment Selection & Installation of the outdoor unit

The outdoor unit, housing the evaporator coil, compressor and condenser coil is crucial. The process includes preparing the location, securely mounting the unit, connecting pipework and hydraulic components, and electrical wiring by a qualified electrician.

Indoor Installation

After selecting an appropriate location for any indoor components such as your hot water cylinder and system controls a qualified technician will connect up the system. After making connections, a qualified technician tests and adjusts the system for optimal performance. This ensures everything is working efficiently and safely.

Finishing Up & Completion of the BUS Grant

Final steps involve cleaning the work area, demonstrating system operation, and providing important documentation like user manuals and warranty information. Your system will then be commissioned by an Experienced engineer, all paperwork will be completed and the £7500 BUS grant voucher will then be redeemed.

Why Choose Us to be your Air source heat pump installer?

Expertise & Experience

With over 30 years of combined experience, SL Energy brings a wealth of expertise in heating and plumbing. Trust our seasoned professionals to install your Air Source Heat Pump with precision and care.

Sustainable Solutions

Be a part of the green revolution with our sustainable heating solutions. As leaders in the industry, we prioritise eco-friendly practices, ensuring your home is both comfortable and environmentally conscious.

Certified Installations

Our installations are Certified, assuring you of top-notch quality and compliance with industry standards. Choose us for certified excellence in every installation.

Customer Satisfaction

Join a growing list of satisfied customers who have experienced the SL Energy difference. Read testimonials from real clients who have benefitted from our Air Source Heat Pump installations.

Versatile Solutions

Tailored to your needs, our Air Source Heat Pumps provide versatile heating solutions. Whether it’s underfloor heating, a central heating system, or a customized setup, we’ve got you covered.

Control Technology

Take control of your comfort with our advanced heat pump controls. We utilize modern technology to optimise efficiency and ensure that your heating system is both user-friendly and effective.

Transparent & Honest

At SL Energy, transparency is key. We provide clear communication, honest assessments, and fair pricing. You can trust us to guide you through the installation process with integrity.

Local Service, Global Standards

Based in the New Forest, we proudly serve Southampton, Brockenhurst, Lymington, New Milton, Christchurch, Bournemouth, and surrounding areas. Benefit from our local presence and global standards in every installation.

Additional Considerations for Hampshire Homeowners

Hampshire Climate Considerations

While air source heat pumps are designed to work in a variety of climates, it's crucial to consider the specific weather patterns of Hampshire. We'll work with you to choose a model that is best suited to the local climate, ensuring optimal performance even during the coldest winters.

Planning Permission

In most cases, air source heat pump installations in Hampshire won't require planning permission. However, our team can assist you in navigating any regulations or approvals needed, giving you one less thing to worry about

How does an air source heat pump work​?

Extracting Heat from the Air

An Air Source Heat Pump (ASHP) operates by extracting heat from the ambient air outside, even in colder temperatures. It utilises a refrigerant that evaporates at low temperatures, absorbing heat from the outdoor air.

Compression and Temperature Increase

The absorbed heat is then compressed, causing the refrigerant to become hot. This process significantly increases the temperature of the refrigerant, turning it into a high-temperature gas.

Heat Exchange with Your Home

The high-temperature gas is then passed through a heat exchanger inside your home. This allows the heat to transfer to the heating system, whether it’s underfloor heating, radiators, or a forced-air system.

Distribution of Heat

The now-cooled refrigerant returns to the outdoor unit, and the process repeats. The heat extracted from the air is efficiently distributed throughout your home, providing a consistent and comfortable indoor temperature.

Efficient Control Technology

Advanced control technology regulates the temperature and output, ensuring optimal efficiency and comfort. Some systems even allow for cooling in warmer months, providing a versatile solution year-round.

Energy Efficiency and Environmental Benefits

Air Source Heat Pumps are renowned for their energy efficiency. They require minimal electricity to operate, making them a cost-effective and environmentally friendly heating solution. By harnessing heat from the air, they contribute to reducing carbon emissions and promoting sustainability.

Understanding the fundamental process of how Air Source Heat Pumps work showcases their versatility, efficiency, and commitment to sustainable heating solutions. SL Energy is your trusted partner in bringing this innovative technology to your home.

Frequently Asked Questions

our partnership with Heat Geek allows us to offer installations starting from just £3,000—making the switch to a heat pump comparable to the price of a high-quality gas boiler replacement.

For a professional, high-spec installation, you should budget between
£7,000 and £15,000.

However, it is important to remember that this is a total project cost. Thanks to the Boiler Upgrade Scheme (BUS), many homeowners in England and Wales are eligible for a £7,500 grant, which significantly brings down the net cost. As I mentioned earlier, 

While it is possible to install an air source heat pump yourself, it is not recommended. The installation process is complex and requires specialised skills and knowledge. If you are not experienced in plumbing, electrical and heating system design it is best to hire a qualified installer to ensure that the system is installed correctly and safely. To access the BUS grant, the installation must be carried out to MCS standards and commissioned by an MCS engineer. We install to the highest MCS standards and offer a commissioning service.

The installation of an air source heat pump typically involves the following steps:

  1. Site survey: A qualified installer will assess your property to determine the best location for the outdoor unit. We will then assess your heating and hot water system and design your installation accordingly, making recommendations for upgrades as necessary. We will take room measurements, inspect your windows and insulation or work off of floor plans, ready for your heat loss calculation.
  2.  Heat loss calculation & proposal: We will then carry out a full heat loss report for your property and provide you with a fully inclusive quote for your air source heat pump installation.
  3. BUS grant application: We will apply for the BUS grant and carry out a DNO application on your behalf
  4. Installation Of The Base & Heat Pump: A suitable base will be installed and your heat pump will be put in place.
  5. Pipework installation: Pipes will be run between the heat pump, the hot water cylinder and any radiators or manifolds.
  6. Electrical installation: The heat pump and indoor controls will be connected safely to the electrical supply.
  7. Commissioning: The system will be tested and commissioned to ensure that it is working correctly. We will optimise your system and controls to ensure that you get the highest possible efficiencies from your air source heat pump installation.
  8. BUS Grant: On successful completion of all installation works and all paperwork we will refund you the £7500 BUS grant. 

You may have heard some horror stories where homeowners have forked out their hard earned money for an air source heat pump and their electrical bills are astronomical. This is not the fault of the air source heat pump. This is down to poor installation and poor system design. An air source heat pump should really be a minimum of 350% efficient on average throughout the year, our installations are typically 400% efficient and above. This is completely down to excellent system design and perfect installation. Our installations will save you money on your utility bills. 

Most of the “air-to-water” heat pumps we install for central heating don’t provide cooling in the same way an air conditioner does. However, if you have an “air-to-air” system, it can certainly be configured to cool your home in the summer by reversing the cycle.

If you’re interested in cooling, let us know during the design phase. We can discuss whether your property layout is better suited for an air-to-air setup or if we can use other design strategies to keep your home comfortable during those warm Hampshire summers.

Because heat pumps are incredibly efficient—often outputting 3 to 4 units of heat for every 1 unit of electricity used—they use far less energy than direct electric heating.

On average, a typical UK home might use around 3,000–4,000 kWh of electricity per year to power a heat pump, but this varies wildly depending on your property’s insulation, your preferred indoor temperature, and your hot water usage. The “trick” to keeping usage low is ensuring the system is designed to run at lower flow temperatures, which allows the pump to operate at its peak efficiency.

There is no “one-size-fits-all” answer here. A common mistake is thinking you just match the size to the number of bedrooms—but that doesn’t account for how well your specific home holds onto heat.
Use our Size calculator for AC and heat pumps to get an idea of what size might be suitable for your home. 

To get the right size, we perform a room-by-room heat loss survey. We look at your insulation levels, the age and type of your windows, and your overall floor area. The goal is to install a system that perfectly matches your home’s heat demand on the coldest day of the year. If we oversize it, it’ll cycle on and off too much, wasting energy; if we undersize it, you won’t be warm enough.

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