Hampshire's Premium Air Source heat Pump Installer

Welcome to SL Energy:

Your Trusted Partner for Heating, Plumbing And Renewables in Hampshire and Dorset

Based in the New Forest covering Hampshire and Dorset we are team of experienced heating, plumbing & electrical engineers with a keen passion for renewable energy.

SL Energy is an amalgamation of two companies both established for over 30 years. Fronted by two experienced heating and plumbing engineers SL Energy has been formed to bring you ultra efficient heating and plumbing systems wether it be, a renewable system, gas, oil or electric system. Based in the new forest, we offer our heating, plumbing and renewable services in Southampton, Brockenhurst, Lymington, New Milton, Christchurch, Bournemouth and all surrounding areas.

Trusted Reputation

With years of dedicated service, we’ve earned the trust of Hampshire and Dorset residents. Check out what our satisfied customers have to say.

Leading Expertise

Our team comprises seasoned professionals with a wealth of experience in heating, plumbing and renewables. Rest easy knowing your home is in capable hands.

Local Focus

We’re not just a business; we’re part of the community. Our local focus ensures that our solutions are tailored to the specific needs of Hampshire and Dorset.

Our Services

We believe in building strong relationships with our customers, fostering trust and loyalty through personalized interactions. We listen attentively to your feedback and use it to continuously improve our offerings, ensuring that your experience with us is continually enhanced.

Experience the efficiency of modern heating with our expert air source heat pump installation services. With access to the £7500 BUS grant, we can provide you an efficient, cost effective solution.

Harness the power of the sun to provide your home with sustainable hot water solutions.

Embrace the future of energy generation with our cutting-edge solar photovoltaic systems.

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Optimise your energy independence with our innovative battery storage solutions.

Ensure the seamless flow of water throughout your home with our comprehensive plumbing expertise.

Create a comfortable and inviting atmosphere with our reliable and efficient heating systems.

Your Journey to Comfort Begins Here

At SL Energy, we understand the challenges you face in maintaining a comfortable home. Our commitment to excellence and customer satisfaction sets us apart. Here’s how we transform your heating, plumbing and renewable experience:

Expert Guidance

Our seasoned professionals guide you through the best heating options tailored to your needs. No more guessing games—just reliable warmth.

Swift Resolutions

Plumbing problems disrupting your routine? Our expert team ensures quick and efficient resolutions, leaving your home free of any plumbing issues.

Energy Savings

Say goodbye to soaring energy bills. Our energy-efficient heating solutions not only keep you warm but also save you money in the long run.

Emergency Support

Plumbing disasters don’t wait for convenient hours. That’s why we offer out of hours call-outs, ensuring comfort and safety at all times.

Local Reliability

We’re not just a service; we’re your neighbours. Our team understands the unique challenges of Hampshire and Dorset, delivering solutions that stand the test of local conditions.

Let's Transform Your Home Comfort Together.

Ready to bid farewell to chilly nights and plumbing headaches? Fill out the form below, and let’s start your journey to a cosier, stress-free home:

Air Source Heat Pump project photo

Air Source Heat Pumps

Here at SL Energy we are air source heat pump installation experts. Our company was formed to provide Hampshire, Dorset and the New Forest quality air source heat pump installations. Heat pumps have been misrepresented in the media as being expensive to install and expensive to run, when this is not the case. Provided the system is designed and installed by someone with the right skills set. Here at SL Energy we possess the skill set to design a system with low running costs in mind and with access to the boiler upgrade scheme grant we can now get you £7,500 off of your air source heat pump install.

Why Choose SL Energy?

Unmatched Expertise in Heating Solutions, Tailored for Your Comfort!

Are winter chills making your home uncomfortable? Our heating solutions bring warmth to your Life.

Plumbing Precision: Resolving Plumbing Headaches Swiftly and Effectively!

Fed up with persistent plumbing issues? We fix it promptly, ensuring a hassle-free living.

Energy-Efficient Heating: Lower Bills, Cozier Homes!

Are high energy bills burning a hole in your pocket? Discover our energy-efficient heating solutions.

Emergency Plumbing: Your Lifesaver in Critical Situations!

Plumbing emergencies disrupting your peace? We’re just a call away.

Tailored Solutions for Hampshire and Dorset: Local, Reliable, and Trustworthy!

Tired of one-size-fits-all services? Experience personalised solutions crafted for you.

Our Accreditations

Transparency and honesty are essential values for us. We aim to provide clear and accurate information, avoiding hidden fees or unnecessary complications. Our goal is to make your journey with us as smooth and enjoyable as possible.


The cost of installing an air source heat pump in the UK typically ranges from £8,000 to £18,000, depending on the size and efficiency of the system, the complexity of the installation, and the local labour rates. The average cost is around £12,000. But now with the £7500 BUS grant, it can cost you as little as £1000.

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. 

Air source heat pumps are most suitable for homes. Largely speaking any heating system can be designed to work at low flow temperatures although some additional insulation may be recommended. In certain cases, placement of the heat pump and cylinder can be a challenge.

Air source heat pumps can save you money on your heating bills provided that your heating system is designed correctly. They are also a more sustainable option than traditional fossil fuel-based heating systems. We can design your system to work at lower flow temperatures, we also create a control strategy and use weather compensation to ensure minimal electrical usage. On top of this with our innovative battery storage we can use lower overnight tariffs to charge your battery, using the power stored in the batteries to help power the heat pump during the day.

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