Air Source Heat Pump Specialists

Enjoy year-round comfort with an air source heat pump.

Air source heat pumps provide efficient and eco-friendly heating that keeps your home just right — whatever the season. Simple to run, cost-effective to maintain, and kinder to the planet.

Why choose an Air Source Heat Pump?

Use the natural temperature of the surrounding air to heat your home.

Reduce Energy Bills

An air source heat pump keeps your home warm and your water hot — using nothing but the natural warmth in the air around you. It’s a smart way to break free from fossil fuels like gas or oil, offering a cleaner, more sustainable solution for modern living.

More Energy Efficient

Up to three times more efficient than traditional heating, an air source heat pump can produce up to 3kW of heat for every 1kW of electricity used — saving you energy, money and carbon with every degree of warmth.

Why chose Evergreen Ventures as your Air Source Heat Pump partner?

Heat Pump Specialists

Our expert team have installed in excess of 1000 heat pumps and are specialists in the design, installation and maintenance of air source heat pump heating systems.

Accredited company

We are MCS, F-Gas and N.I.C.E.I.C approved, ensuring your heat pump system is designed, installed and commissioned by a professional installer.

Proven Track Record

We've completed installations for homes and businesses across Norfolk, Cambridgeshire and the rest of the UK, earning a reputation for quality and dependability.

How do Air Source Heat Pumps work?

Air source heat pumps use electricity to extract heat from the air outside, and then amplify and transfer it inside to provide heating and hot water for your home. This diagram shows a typical configuration including optional sanitary hot water tank and optional cooling.

The outdoor unit extracts free low temperature heat from the surrounding air and increases its temperature. Upgraded heat is then transmitted via the refrigerant circuit to the indoor hydro-box.

The indoor hydro-box transfers the heat in the refrigerant to the water circulated in the central heating radiators, underfloor heating system and sanitary hot water tank. The preparation of sanitary hot water is performed by switching the system from cooling or heating to sanitary mode.

A purpose built stainless steel water tank, constructed to maintain the highest levels of energy efficiency, is available to meet all hot water needs. The combination of an electric booster heater in the upper part of the tank and a heat pump heat exchanger in the lower part ensures the lowest possible energy consumption with rapid water heating. In addition, a built in function raises the water temperature to 70°C or higher at least once a week to remove any possibility of Legionella growth.

System controls are contained within the hydro-box and feature a weekly timer that enables the indoor temperature to be controlled according to the user requirements. The timer is programmable on an hourly or daily basis so that temperatures can be reduced at night or during holidays and increased prior to rising in the morning or returning home. User comfort according to personal preference is thus maintained at all times. Where control over individual room temperatures and comfort levels is needed a conventional room thermostat should be added.

FAQs

An air source heat pump extracts natural heat from the outside air — even in cold weather — and uses it to warm your home and hot water. It works like a fridge in reverse, moving heat rather than generating it, which makes it highly energy efficient.

Yes, modern air source heat pumps are designed to work efficiently even at low temperatures. They can continue extracting heat from the air in temperatures as low as -25°C.

In most cases, yes. A properly sized and installed system can provide all the heating and hot water your home needs. Your home’s insulation and radiator system may need to be assessed to ensure maximum efficiency.

Air source heat pumps are much more efficient than traditional systems — often delivering 4 units of heat for every 1 unit of electricity used. This can lead to lower energy bills, especially when replacing oil or electric heating.

In many cases, air source heat pumps are considered permitted development, so planning permission isn’t required. However, it's always worth checking with your local authority, especially if you live in a listed building or conservation area.

We recommend an annual service to keep your system running efficiently, avoid breakdowns and maintain optimal performance.

Your one-stop solution for Air Source Heat Pumps

Planning & Design

A well-designed heat pump system ensures maximum efficiency and comfort. We assess your property, insulation levels and heating needs to design a system that performs reliably.

Installation

Our skilled engineers install air source heat pumps with precision and care, ensuring correct setup, optimal performance and minimal disruption while delivering an efficient low-carbon heating solution.

Maintenance

Routine servicing keeps your heat pump running efficiently and extends its lifespan. Our maintenance services help prevent faults, maintain performance and ensure reliable heating year after year.

Ready to make the switch to an Air Source Heat Pump?

If you have any questions or you'd like to discuss your project, please contact us to see how we can help you.

The information you provide in this form will be used to respond to your enquiry and managed as described in our Privacy Policy.