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Ground source heat pumps

Stay warm and cosy with a tailored, eco-friendly heating system for your home.

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What is a ground source heat pump?

A ground source heat pump draws heat from the ground outside your home to provide warmth and hot water for your living space. By tapping into the Earth’s consistent temperature, they produce zero carbon emissions and offer a greener alternative to traditional boilers. And that’s not all.

Switching to a ground source heat pump keeps your home at a pleasant year-round temperature and leads to significant savings on your energy bills. At Bundle, we are on a mission to provide every home in the country with energy-efficient solutions and sustainable improvements that pay back.

By upgrading your home with our efficient heat pump technology, we help to ensure a better future for your household, your bank balance, and the planet.

Ground Source Heat Pumps | Benefits at a glance

  • Lower energy bills and financial savings
  • A warmer, more comfortable home
  • Greater energy efficiency
  • Reduced environmental impact
  • Increased property value

How does a ground source heat pump work?

  • Heat absorption: The system consists of a loop of pipes, typically buried in the ground and filled with liquid. As the liquid (generally a mix of water and antifreeze) circulates through the pipes, it absorbs heat from the ground.
  • Heat transfer: The warmed liquid flows to the heat pump unit located inside or outside your home. The unit extracts heat from the liquid through an evaporation process and transforms the liquid into gas.
  • Compression: The gas is compressed which increases its temperature significantly.
  • Heat distribution: The hot gas moves through coils in the heat pump and releases it into your home, providing heat for your radiators and the water in your heating system.
  • Return to the ground: After releasing its heat, the cooled liquid flows back to the ground to absorb more. This creates a continuous cycle and a consistently comfortable temperature for your home.
  • Save a Bundle on your bills: It’s time to get cosy and enjoy money back in your pocket. By replacing a standard gas boiler with a ground source heat pump, you could save up to £500 a year on your energy bills.

There are a number of government grants available to help homeowners make the switch to greener energy alternatives. These grants can dramatically reduce the costs of installing a renewable energy system, making it more accessible than ever to upgrade your home sustainably.

The Boiler Upgrade Scheme (BUS) is designed to make low-carbon heating systems more attainable for homes and small businesses in England and Wales. Under the scheme, you could benefit from an upfront grant of £7,500 to fund the installation of a ground source or air source heat pump.

You may be eligible for the Boiler Upgrade Scheme if you:

  • Own your property (including a business, second home, or property you rent to tenants)
  • Are replacing a fossil fuel heating system or direct electric storage heaters

Property eligibility

In addition, your property must have a valid Energy Performance Certificate (EPC) with no outstanding recommendations for loft or cavity wall insulation. You can find and check your EPC certificate through the Gov.UK website (https://www.gov.uk/find-energy-certificate)

The Home Upgrade Grant (HUG) is a government initiative that helps with energy-saving home improvements for low-income households who are off the gas grid.

You may be eligible for the Home Upgrade Grant if:

  • You are a low-income household
  • You are off the gas grid
  • You have an Energy Performance Certificate (EPC) between D and G
  • You live in a qualifying local authority area

You can find and check your EPC certificate through the Gov.UK website (https://www.gov.uk/find-energy-certificate) Funding is available for both homeowners and private tenants who meet the criteria. For qualifying households, HUG sets out to address your home’s energy efficiency first, before assessing heating systems and making recommendations for a funded upgrade.

  1. ECO4 Scheme The Energy Company Obligation (ECO4) is a government scheme designed to tackle fuel poverty and reduce carbon emissions within low-income homes across the UK. Unlike other energy grants, ECO4 puts the onus on some of the larger energy companies to assist eligible households with insulation and heating upgrades and boost energy efficiency. You have a strong likelihood of securing ECO4 funding if you: 
  2. Receive qualifying benefits The overarching goal of ECO4 is to ensure low incomes aren’t a barrier to improving the energy efficiency and warmth of UK homes.
  3. Live in social housing with poor energy efficiency Under the ECO4 scheme, energy efficiency measures can be provided to social housing with an EPC rating of D, E, F, and G – and where the premises are rented below the market rate. You can find and check your EPC certificate through the Gov.UK website (https://www.gov.uk/find-energy-certificate)
  4. Have eligibility under ECO4 Flex If you don’t receive any of the qualifying benefits but live in one of the country’s least energy-efficient properties, you may still be able to secure funding through ECO4 Flex.

Let’s discuss your greener future

Our team can help you:

  • Check your eligibility for the ECO4 scheme
  • Navigate the application process
  • Kickstart your sustainable home upgrade journey

Green benefits of a ground source heat pump:

Reduced reliance on fossil fuels

Harnessing renewable energy from the earth, ground source heat pumps tap into a natural resource that is abundant and sustainable.

Lower carbon footprint

Cutting back on fossil fuels means doing your bit in the fight against climate change. For the average home, a ground source heat pump can reduce CO2 emissions by as much as 55% (compared to a gas boiler). 

Greater energy efficiency

Heat pumps consume much less energy than conventional heating methods. Excellent news for your comfort levels, energy bills, and the environment.

Long lifespan

With regular maintenance, a ground source heat pump should last for 20 years or more. With the world feeling the impacts of climate change, it’s time for us to pull together. At Bundle, our mission is to help every home in the UK save energy, money, and the planet. We are here to guide you and our experts will help you make an informed, hassle-free investment into a greener, more sustainable future.

Frequently Asked Questions

There are several benefits to installing a ground source heat pump at your home:

After the initial investment of a heat pump installation, you will benefit from long-term savings on your energy bills.

A ground source heat pump adds significant value to your property, thanks to a growing demand for renewable energy.

Ground source heat pumps aren’t reliant on fossil fuels and use only small amounts of electricity. They reduce your CO2 emissions considerably, making them the most environmentally friendly option on the market.

The size of your outdoor space is a consideration when planning a ground source heat pump. Trenches are the most cost-effective way of installing a system.

Pipes need to be located under the frost line at around 1.2m deep and trenches are roughly 1m wide. For context, an average 4-bedroom house may need 350 linear metres of trenching to provide enough heat transfer for the property’s heating and hot water demand.

In reality, this means for a 4 or 5 bedroom house, you would need a garden 10m x 50m or for a 3 bedroom house, it would need to be 8m x 50m.

If space is at a premium, boreholes tend to be a better option. This involves drilling down vertically (approx. max depth 150m/hole before starting another) creating a 6-8 inch hole. Each borehole is spaced apart and covered to leave no trace.

This would mean for a 4 or 5 bedroom house, you would need a garden size of 6m x 6m and for a 3 bedroom house, you would need a garden size that could accommodate either a 6m equilateral triangle or a 12m long line.

The internal plant equipment (GSHP, hot water cylinder and buffer tank) takes up more room than a traditional boiler system so consideration will need to be given as to where to site the heat pump kit.

Our Stories

Ground Source Heat Pump

Oakham Treasures Museum

Learn how one of the largest museums in the UK revolutionised its heat distribution with...

Read case study

2019

Project completion

£438,500

Lifetime savings

2,930 tonnes

Carbon saved

Projected over a 20-year lifespan 

 

Ground Source Heat Pump

Manor House

Learn how a farmhouse transformed a disused field into a reliable heat source to cover...

Read case study

2020

Project completion

£30,650

Lifetime savings

430 tonnes

Carbon saved

Projected over a 20-year lifespan 

Ground Source Heat Pump

Parkfield

Learn how a Ground Source Heat Pump covers the heating and hot water demand while...

Read case study

2018

Completion date

£15,530

Lifetime savings

170 tonnes

Carbon saved

Projected over a 20-year lifespan 

We were impressed with the thoroughness of the survey, we were impressed with the guys who came to do the installation, we were impressed with the overall quality of the work. It’s really nice having people working with us who are very personable and very easy to have around.

Simon Lisk – Highgate

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