Ground Source Heat Pumps
The most efficient renewable heating solution. Extract stable heat from underground for maximum performance.
What is a Ground Source Heat Pump?
A ground source heat pump (GSHP) extracts heat from the ground using pipes buried in your garden. The ground temperature remains constant at 10-15°C year-round, even when it's freezing outside, making GSHPs incredibly efficient.
There are two main types: horizontal ground loops (trenches 1.2-1.5m deep) or vertical boreholes (drilled 90-150m deep). The choice depends on your available land and budget.
Ground source heat pumps typically achieve 400-500% efficiency (COP of 4-5), meaning for every 1 kW of electricity used, they generate 4-5 kW of heat. This makes them more efficient than air source heat pumps, though with higher installation costs.
Benefits of Ground Source Heat Pumps
Highest Efficiency
COP of 4-5 makes GSHPs the most efficient heating system available. Lower running costs than air source.
Consistent Performance
Ground temperature is stable year-round, so efficiency doesn't drop in cold weather like air source can.
Long Lifespan
Indoor unit lasts 20-25 years, ground loops can last 50-100 years. Excellent long-term investment.
Quiet Operation
No outdoor unit means virtually silent operation. Perfect for noise-sensitive locations.
Future Proof
The most sustainable heating solution available. Minimal carbon footprint with renewable electricity.
£7,500 Grant
Eligible for the same BUS grant as air source, helping offset the higher installation cost.
Types of Ground Loop
Horizontal Trenches
- • Pipes laid in trenches 1.2-1.5m deep
- • Requires 100-150m² garden space per 5kW
- • Less expensive than boreholes
- • 2-3 days excavation work
- • Garden can be restored after
Vertical Boreholes
- • Drilled 90-150m deep
- • Requires minimal garden space
- • More efficient than trenches
- • 3-5 days drilling work
- • Better for smaller gardens
Costs shown are before the £7,500 BUS grant. Your actual cost will be £7,500 less.
Is a Ground Source Heat Pump Right for You?
Best for:
- • Properties with large gardens (for trenches) or any size garden (for boreholes)
- • New builds or major renovations
- • Properties seeking maximum efficiency and lowest running costs
- • Homes in noise-sensitive areas
- • Long-term owners looking for best ROI
Considerations:
- • Higher upfront costs (even with grant)
- • Requires sufficient garden space for trenches (or budget for boreholes)
- • Disruption to garden during installation
- • Longer installation time than air source
Ready to Install a Ground Source Heat Pump?
Find MCS certified installers who specialize in ground source heat pump installations.
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