Thermal Response Testing
Accurate ground data is essential to designing an efficient, high-performing commercial GSHP system. Onsen provides Thermal Response Testing (TRT), delivering verified, site-specific data to consultants, designers and project teams to inform borehole field design before drilling begins.
Our Testing Process
Every TRT programme is carefully planned and delivered using a proven methodology, ensuring accurate data and reliable results.
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What Sets Onsen Apart
Integrated Project Delivery
With expertise spanning TRT, borehole drilling and technical consultancy, Onsen supports projects from initial site investigation through to installation. This continuity helps streamline communication and enables a smoother transition between project stages.
Accurate Ground Data
TRT removes much of the uncertainty from ground source heat pump design by replacing estimated ground conditions with verified, site-specific data. Better information leads to more informed design decisions and greater confidence before drilling begins.
Technical Expertise
Commercial GSHP projects demand specialist knowledge. Our experienced team understands the technical and practical challenges involved, providing expert support throughout the testing process.
Working With Us
The standards we hold ourselves to across every project, shaping how we work with clients, partners and project teams.
Responsive Project Support
We coordinate with project teams to minimise disruption and ensure testing is completed when it's needed, helping projects stay on schedule.
Clear Communication
Our team keeps clients informed throughout the testing process, providing prompt updates and straightforward reporting at every stage.
Reliable Delivery
With extensive experience supporting commercial GSHP projects, we deliver dependable testing services that integrate smoothly with wider project programmes.
Recent Projects
From commercial developments to education and healthcare, we've supported a wide range of ground source heat pump projects with the technical expertise needed to inform design and support successful delivery.
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Delivering Low-Carbon Heat at Campus Scale Through Ground Source and Waste Heat Integration
- 49 boreholes installed
- 250 metres depth per borehole
- Integration with recovered data centre heat
GSHP Drilling for Care Home Facility in Bedfordshire
- 12 boreholes drilled
- 90kW system capacity
- Potential groundwater risk mitigated
Large-Scale Ground Source Heat Pump Project in Central London
- 76 boreholes
- 18,000+ meters of drilling
- Overcame challenging access constraints in a dense urban environment
Sustainable Off-Grid Living with Onsen Energy and Kensa’s Shoebox NX
Sustainable GSHP Drilling Project for UK Secondary School & College
- Over 1MW installed heating energy
- Minimal disruption to the live learning environment
- Maintained a clean site using specialist mud processing and ground protection equipment
32 Zero Carbon 'In Use' Homes with Ground Source Heat Pumps in Lewes
- 32 affordable rent and shared ownership homes
- 15 boreholes
- Cheaper, greener and more secure energy for residents
Planning a ground source heat pump project?
If you need accurate thermal ground data to support your borehole field design, Onsen can provide reliable thermal response testing backed by experienced technical support. Speak to our team about your project requirements today.