Glossary
What Is a Ground Source Heat Pump? Plain-English Guide (2026)
Definition: A heat pump that extracts heat from the ground via buried pipes
Ground Source Heat Pump Explained
A ground source heat pump (GSHP) uses a network of pipes buried in your garden to extract stable thermal energy from the earth. Because ground temperature stays around 10-12°C year-round, GSHPs deliver higher SCOPs of 3.5-4.5.
How Does a Ground Source Heat Pump Work?
- Horizontal pipes buried 1-2 metres deep in garden OR vertical borehole drilled 50-150m
- Fluid in pipes absorbs ground heat
- Heat pump compressor raises temperature to 35-55°C
- Warm water distributed through underfloor heating or radiators
Pros and Cons of a Ground Source Heat Pump
| Pros | Cons |
|---|---|
| Higher efficiency (SCOP 3.5-4.5) than air source | Higher installation cost (a government energy efficiency grant amount0-£35000) |
| Stable ground temperature gives consistent performance | Requires significant garden space or borehole drilling |
| No visible outdoor unit — quieter operation | Installation is disruptive to landscaping |
| Long lifespan of 20-25+ years | Longer payback period than air source |
Frequently Asked Questions
What is a Ground Source Heat Pump?
A heat pump that extracts heat from the ground via buried pipes
How does a Ground Source Heat Pump work?
A ground source heat pump (GSHP) uses a network of pipes buried in your garden to extract stable thermal energy from the earth. Because ground temperature stays around 10-12°C year-round, GSHPs deliver higher SCOPs of 3.5-4.5.
Why is a Ground Source Heat Pump important for homeowners?
Understanding ground source heat pump helps you make informed decisions about energy improvements to your home and may affect the grants, savings and payback periods available to you.
Is a Ground Source Heat Pump relevant to home energy improvements?
Yes — ground source heat pump is a key concept in home energy improvements. It may affect system sizing, efficiency and eligibility for government grants and incentives.
Where can I learn more about ground source heat pump?
You can find more information on renewable energy terminology and policy by searching online or consulting with a qualified installer in your area.