Air Source Heat Pump Grants

Air Source Heat Pump Grants in the UK

Air source heat pumps (ASHPs) are an innovative, energy-efficient way to heat your home while reducing your carbon footprint. With rising energy costs and an increased focus on sustainability, many homeowners are turning to air source heat pumps as a reliable, eco-friendly solution. The UK government offers various grants to help make this technology more accessible. Here’s everything you need to know about air source heat pumps, how they work, and the government grants available to help you install one.

Whether you have a non-condensing gas boiler, old electric storage heaters, or other outdated heating systems, boiler grants can help transform your home into a warmer, more energy-efficient space while reducing your carbon footprint.

What is an Air Source Heat Pump?

An air source heat pump is a renewable energy system that extracts heat from the air outside and uses it to provide heating and hot water for your home. These systems are highly efficient, capable of producing up to three times the energy they consume.

As a low carbon heating system, an air source heat pump offers an effective way to reduce household emissions while cutting down on energy costs. If you’re living in an existing property, upgrading from a traditional boiler to an air source heat pump can form part of a broader set of energy efficiency improvements.

Support is available through various government-backed initiatives, including grants for air source heat pumps, which help eligible homeowners cover the cost of installation. This makes the switch to cleaner, more sustainable heating both accessible and worthwhile.

How Do They Work?

Air source heat pumps work by transferring heat from the outside air to the inside of your home. Even when it’s cold outside, there is heat energy in the air that can be captured and used. Here’s a simplified explanation of the process:

  1. Heat Extraction: The heat pump’s outdoor unit absorbs heat from the air using a refrigerant fluid.
  2. Compression: The refrigerant is compressed, increasing its temperature.
  3. Heat Transfer: The heated refrigerant passes through a heat exchanger, which transfers the heat to your home’s heating system (e.g., radiators, underfloor heating, or hot water tank).
  4. Cycle Continuation: The refrigerant cools down and returns to the outdoor unit to repeat the process.


Air source heat pumps are versatile and can be used for both heating and cooling, making them an ideal solution for year-round energy efficiency.

Benefits of Installing an Air Source Heat Pump

Installing an air source heat pump comes with a wide range of benefits, including:

  1. Lower Energy Bills:
    Air source heat pumps are highly efficient, using less electricity than traditional heating systems. By harnessing renewable energy from the air, you can significantly reduce your heating costs.
  2. Reduced Carbon Emissions:
    Since air source heat pumps use renewable energy, they produce far fewer carbon emissions compared to gas or oil boilers, helping you to contribute to a greener future.
  3. Year-Round Comfort:
    Air source heat pumps can provide both heating in the winter and cooling in the summer, making your home comfortable all year round.
  4. Eligibility for Government Grants:
    With the UK government offering financial incentives to install renewable heating systems, the upfront cost of installing an air source heat pump can be significantly reduced.
  5. Increased Property Value:
    Energy-efficient homes are more attractive to buyers, and installing an air source heat pump can increase the value of your property.

Government Grants for Air Source Heat Pumps

To encourage the adoption of renewable heating systems, the UK government offers several grants to help homeowners offset the cost of installing air source heat pumps. Here are the main schemes currently available:

ECO4 Scheme

The ECO4 (Energy Company Obligation) scheme is designed to help low-income households improve their energy efficiency. While primarily aimed at insulation measures, some households may be eligible for funding to install renewable heating systems like heat pumps. This scheme is particularly beneficial for those on qualifying benefits or living in fuel poverty.

Local Authority FLEX (Flexible Eligibility)

Under the FLEX scheme, Local Authorities can refer households that may not qualify for traditional grants but are still considered vulnerable to living in a cold home. This includes households with low income or specific health conditions that could be exacerbated by inadequate heating. Check with your Local Authority to see if they participate in the ECO4 FLEX scheme.

Am I Eligible for a Grant?

Your eligibility for a grant depends on the scheme you’re applying for and your household circumstances. Below are some common eligibility criteria:

  • ECO4 Scheme:
    • You or someone in your household must receive qualifying benefits such as Universal Credit, Child Tax Credits, or Income Support.
  • Local Authority FLEX Scheme:
    • Your household income must be below £31,000, or you must meet specific proxy or health-related criteria.
    • Your Local Authority must be participating in the ECO4 FLEX scheme.

How to Apply for an Air Source Heat Pump Grant

At ECO4, we aim to make the application process as simple and straightforward as possible. 

Follow these steps to get started:

  1. Complete the Online Application Form
    Provide some basic information about your property, your household income, and any benefits you may be receiving. This will help us determine which scheme you are eligible for.
  2. Speak to Our Team
    Once you’ve submitted your application, a member of our team will get in touch to discuss your options and answer any questions you may have.
  3. Property Assessment
    We’ll arrange for a qualified assessor to visit your home and evaluate its suitability for an air source heat pump. The assessor will also confirm that you meet the grant eligibility criteria.
  4. Grant Approval and Installation
    If you’re eligible, we’ll help you secure the grant and arrange for the installation of your new air source heat pump. Our team of professional installers will ensure that the system is fitted to the highest standards.

Why Choose ECO4?

With years of experience in helping homeowners access government grants and improve their energy efficiency, we are the trusted choice for air source heat pump installations. Our dedicated team will guide you through the entire process, from applying for a grant to completing the installation, ensuring a hassle-free experience.

Apply Today

Don’t miss out on the opportunity to reduce your energy bills and improve your home’s energy efficiency with a government-backed air source heat pump grant. Contact us today to find out more or start your application.

Frequently Asked Questions

Are there any hidden costs, or is the installation completely free?

Under the ECO4 scheme, eligible households often receive a fully funded installation with no upfront costs. However, because every property is different, complex installations might occasionally require a small contribution. A free, no-obligation property assessment will confirm exactly what the grant covers before any work begins, ensuring you have complete financial transparency.

Yes, in most cases. Air source heat pumps operate at lower temperatures than traditional gas boilers, meaning your home must retain heat efficiently to keep you warm. If your property lacks adequate insulation, we will usually arrange to install cavity wall or loft insulation first to ensure your new heat pump operates at peak efficiency.

Because heat pumps supply water at a lower, more consistent temperature, you may need larger radiators to effectively warm your rooms. During your initial home survey, our qualified assessors will evaluate your current heating system. If radiator upgrades are required to make the heat pump function correctly, this is typically factored into your grant application.

For the vast majority of properties in the UK, installing an air source heat pump is considered a permitted development. This means you do not need formal planning permission. There are exceptions for listed buildings or properties located within conservation areas. Our team will help you navigate all local guidelines and verify your status during the assessment phase.

Yes, private tenants can apply for the ECO4 scheme as long as they meet the qualifying benefits or income criteria. However, you must obtain written permission from your landlord before any property assessments or energy efficiency improvements can take place. We can even speak with your landlord to explain the long-term benefits of upgrading the property.