Thermal Response Testing Thermal Response Testing
Confirm your closed loop ground source heat pump potential with our precision ground conductivity measurements
Confirm your closed loop ground source heat pump potential with our precision ground conductivity measurements
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What is Thermal Response Testing?
Thermal Response Testing (TRT) is a field test used to measure the thermal conductivity of the ground at depths of up to 200 metres. It gives key data for designing closed-loop ground source systems with vertical boreholes, mainly on larger or more complex projects.
Why is it Done?
TRT is done before fitting a ground source system to find how well the ground absorbs or releases heat.
Rather than using generic guesses, TRT gives exact on-site data. It cuts the risk of poor results or overkill.
How it Works:
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A purpose-built TRT rig is connected to a test borehole.
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Heated water is pumped non-stop through the borehole loop over 2–3 days.
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During this time, heat and flow data is recorded on site by our trained technician.
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The data is then checked by our technician, who calculates the average thermal conductivity and borehole thermal resistance.
Key Benefits of TRT:
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✅ Accurate borehole design – avoids extra drilling or under sizing
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✅ Improved system efficiency and performance
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✅ Reduced long-term energy costs
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✅ Lower installation risks
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✅ Meeting best practices for larger schemes
When is Thermal Response Testing Needed?
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For larger residential, commercial, or district heating projects
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Where boreholes are deep (typically up to 200m)
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When ground conditions are unknown or variable
At Geowarmth, we manage the full TRT process — from drilling to setup, data collection, and expert ground analysis. We ensure reliable design and long-term results for your heat pump.
Contact Us
If you’re unsure what’s right for your home or commercial space, provide some details here and we can get in touch to talk to you about your property
Contact Us
If you’re unsure what’s right for your home or commercial space, provide some details here and we can get in touch to talk to you about your property