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Geothermal Engineering & Consulting Services

 

Ground-Side Expertise from Feasibility Through Construction

 

ThermoLync provides independent engineering and consulting services for ground-source heat exchange (GSHE) systems.

Our services cover the full ground-side project lifecycle—from early feasibility and subsurface investigation through borefield design, construction support, testing, and commissioning.

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We work with owners, architects, MEP engineers, contractors, municipalities, and public agencies throughout New England and New York.

 

Feasibility & Due Diligence

Determine whether geothermal is right for your project.

Before committing to a geothermal system, project teams need to understand the site, available land, subsurface conditions, potential borefield configurations, permitting requirements, and expected construction costs.

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Our feasibility studies can include:

  • Site and subsurface assessment

  • Preliminary geothermal system evaluation

  • Borefield location and configuration

  • Preliminary borehole sizing

  • Ground conditions and drilling considerations

  • Permitting and regulatory review

  • Preliminary construction cost assessment

  • Identification of project risks and uncertaintie​

 

Best suited for: Owners, developers, municipalities, architects, and early-stage design teams.

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[Learn More]

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Test Wells & Thermal Conductivity Testing

 

Replace assumptions with site-specific data.

 

A properly planned test well program can provide much more than thermal conductivity data.

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Test wells can help characterize:

  • Formation thermal properties

  • Depth to bedrock

  • Overburden and bedrock conditions

  • Groundwater conditions

  • Borehole stability

  • Drilling methods and constructability

  • Grouting requirements

 

ThermoLync develops test-well programs, prepares technical specifications, coordinates testing, and evaluates the results for use in final borefield design and construction documents.

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GSHE / Borefield Design

 

Design the ground loop around the actual project.

 

ThermoLync provides engineering design of ground-source heat exchange systems for commercial, institutional, municipal, and other large facilities.

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Design considerations include:

  • Borefield configuration and sizing

  • Borehole depth and spacing

  • Ground thermal properties

  • Long-term thermal performance

  • Header and distribution piping

  • Flow requirements and hydraulics

  • Ground-loop fluid

  • Vaults and mechanical interfaces

  • Constructability and drilling constraints

 

The objective is not simply to produce a calculated borefield—it is to develop a system that can be built, tested, operated, and maintained successfully.

 

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Construction Support & Administration

Design support doesn't end when construction begins.

Geothermal construction presents questions that often cannot be resolved from the drawings alone.

 

ThermoLync supports project teams with:

  • Contractor submittal review

  • RFI responses

  • Drilling and loop installation observation

  • Pressure testing

  • Flushing and flow testing

  • Glycol charging

  • Field condition evaluation

  • Closeout documentation

  • Commissioning support

 

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Peer Review & Independent Inspection

 

An independent technical perspective.

 

ThermoLync provides independent review of geothermal designs, specifications, construction documents, and field installation.

 

Reviews may address:

  • Borefield sizing and configuration

  • Thermal assumptions

  • Hydraulic design

  • Piping and header arrangements

  • Drilling and borehole construction

  • Specifications

  • Contractor submittals

  • Testing procedures

  • Field installation

 

Independent inspection can also be provided during critical construction activities.

 

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Commissioning & Troubleshooting

 

Verify that the ground loop performs as intended.

 

ThermoLync provides technical support during geothermal system testing, commissioning, and troubleshooting.

 

We can help investigate issues involving:

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  • Flow and pressure

  • Loop temperatures

  • Air and water quality

  • Glycol concentration

  • Pressure testing

  • Flushing and balancing

  • Borefield performance

  • Piping and valve configuration

  • Field installation

  • System operation

 

Our goal is to identify the underlying cause of a problem—not simply treat its symptoms.

 

[Learn More]

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One Ground-Side Specialist. Multiple Project Needs.​

 

Whether you need a preliminary feasibility assessment, a complete borefield design, a test well program, construction observation, or an independent technical review, ThermoLync can provide focused geothermal expertise at the stage where it matters most.

 

[Discuss Your Project]

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ThermoLync LLC

ADDRESS

PHONE

EMAIL

23 Fountain Road, 

Arlington, MA 02476

617-909-1077

© 2025 by ThermoLync LLC

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