Start your journey to net zero

Evolo specialises in transitioning your home heating from oil and gas to cheaper to run, low carbon air source heat pumps.  

Key benefits


Air source heat pumps reduce your carbon footprint with greener, cleaner heating


Air source heat pumps turn 1kWh of electricity into 3.5kWh of heating and hot water

Low running costs

Air source heat pumps require minimal maintenance, normally just an annual service

Eligible for grants

Air source heat pumps are eligible for Government grants of up to £5000 and no VAT

How do air source heat pumps work?

Air source heat pumps work like a fridge freezer in reverse. The pump sits outside your home and its electric pump draws heat from the air and compresses it to a high temperature before pumping it around your home. For every 1kWh of electricity used, they generate 3.5kWh in heat and hot water, so they are super efficient as well as kind to the planet.

Is your property suitable?

Air source heat pumps work best in well insulated homes with underfloor heating, but can also be installed with standard radiators. If your home is heated by an oil-fired boiler, Evolo is the UK specialist in transitioning oil heated homes to lower carbon home heating. If an air source heat pump isn’t right for your home, a hybrid oil/heat pump solution might be the best first step in your heating evolution. Our heat pump experts will evaluate your home and recommend the best solution.

Evolo in action

Watch the installation of a hybrid air source heat pump system for an off-grid home.

Where are we installing?

We are currently installing in North Yorkshire, East Anglia and the South West, and will be expanding nationwide soon. Please register your interest so we can keep in touch and send you further information.

Register your interest

Register your interest to find out when we are installing in your area, be the first to hear more about the evolution of energy, our journey to net zero and the latest about air source heat pumps and Government grants.

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Frequently asked questions

Here are some of the questions we are asked about transitioning off-grid oil and gas heated homes to efficient, low carbon air source heat pumps.
Good for the environment and your wallet. Heating your house with a gas boiler is not ideal in the long term. The UK government is banning gas boilers in all new homes from 2025. Why? Because it is good for the environment because gas and oil are fossil fuels that run out slowly. The use of gas and oil also causes considerable CO2 emissions. And the UK has committed to net zero emissions by 2050. For these reasons, the UK will phase out gas-fired central heating boilers in the longer term, and other forms of home heating are becoming more relevant. When an air source heat pump is used, the house is heated with energy from the air and electricity is used instead of gas or oil. Note that you may not need to get rid of your boiler immediately. There are also hybrid forms of heating that use the air source heat pump and gas or oil boiler combination. As a result, you also use much less oil or gas. It is a nice first step on the journey to fossil-free home heating. In addition to contributing to environmental protection, sustainable heating also provides you with financial savings. Electricity is used more efficiently to heat your home instead of your oil or gas-fired boiler. You use less oil or gas and more electricity. Your energy bill is likely to go down depending on your current heating system.
A heat pump heats your home and provides hot water. The heat pump installation replaces your boiler and can be connected to the central heating system. By extracting heat from the air, the installation produces renewable energy. So, you can enjoy sustainable heating. Electricity is required to make an air source heat pump work, so your use of electricity increases. However, oil or gas consumption decreases considerably or even drops to zero depending on the type of solution you install, reducing CO2 emissions for heating the home. View our explainer video here.

With an all-electric heat pump, you no longer need to use oil or gas for heating your home, and with a hybrid heat pump, you reduce oil or gas consumption by up to 80%. An air-source heat pump can be the first step on your journey to making your home more sustainable.

The air source heat pump uses energy from the air and electricity to heat a home. Heating a home with oil or gas causes the greenhouse gas CO₂ to enter the atmosphere, contributing to global warming. With an air source heat pump, the house is (for a large part) heated with renewable energy, and you use less or no oil or gas, thus reducing your CO₂ emissions.

In the long term, heat pumps are often cheaper than high-efficiency boilers. Heat pumps are more expensive to purchase than high-efficiency boilers. But if the installation is well designed, the energy consumption is considerably lower. That is why a heat pump is often cheaper in the long run. The price of a heat pump installation is not easy to calculate because it depends on the situation in your home and your wishes with regard to comfort (which areas must always be warm and how much hot tap water is needed). Contact one of our experts here to understand the potential solution and costs needed to transition your home to sustainable energy.

There are different types of heat pumps. Air-to-air, air-to-water and hybrid heat pumps use air as an energy source. These types of heat pumps do not require digging into the ground. Only the water-to-water and ground-water heat pumps are installed underground. Through a system in the ground, heat from a natural water source or the ground itself is used as an energy source for heating the house. These types of systems require much greater installation work in your garden than an air source heat pump.

A heat pump indoor unit takes up a little more space than a traditional central heating boiler. If you opt for an all-electric variant, you must install a water cylinder next to the heat pump for hot tap water (for showering, baths etc.). Moreover, with an outside air source heat pump, there is always an outside part that takes up around 1 m².

The better your house is insulated, the better the result. Without good insulation and low-temperature heating, an all-electric heat pump is inefficient. You then have to buy a large heat pump, and in many cases, the installation will not work optimally. Fewer structural adjustments are required for a hybrid heat pump. But in all cases, the following applies: the better a house is insulated and the lower the temperature in your heating system required to heat your home, the higher the pump’s efficiency.
You can add a heat pump to an existing gas or oil central heating boiler. By adding a heat pump to a current central heating boiler, a bivalent/hybrid system is created, and you can make considerable savings on oil or gas consumption. With bivalent/hybrid systems, the user often has to determine whether the heating is carried out by the central heating system or the heat pump. It is also possible to do this based on the outside temperature.