A comparable ground source heat pump quotation starts with ground source heat pump application and required process result, heat load temperatures and ground resource, hydraulic integration and controls. Record the required result, site interfaces and acceptance evidence in one revision-controlled RFQ. IndustryApex engineers use these inputs to define the equipment, integration and OEM/ODM scope for your project.

Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
This ground source heat pump RFQ checklist is a working procurement document. Use it to turn the requirements in the Ground source heat pump equipment guide into a written project brief and a comparable equipment offer.
What should a quotation for ground source heat pump include?
Complete the product-specific requirements below. Keep buyer requirements, the proposed equipment response and unresolved points in separate columns. Attach the relevant drawings, samples or site records to the same RFQ revision.
| Requirement to define | How to make the response comparable |
|---|---|
| Ground source heat pump application and required process result | Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision. |
| Heat load temperatures and ground resource Provide seasonal heating or cooling demand, required water temperatures, ground-loop design and fluid conditions. Available source temperatures and the receiving distribution temperatures govern the usable capacity and efficiency. |
Provide the actual site information and connection boundary. Identify what IndustryApex supplies and what the installation site must prepare. |
| Hydraulic integration and controls Compare heat-pump operating envelope, circulation pumps, buffer requirements, antifreeze compatibility and control sequencing. The ground-loop and building-side pumping energy belong in the system comparison, not just the compressor input. |
Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision. |
| Representative input variation and difficult production cases | State the required result and the operating case behind it. Request confirmation for that case and record any exclusions or assumptions. |
| Required acceptance evidence Verify the agreed thermal duty at stated source and load conditions, recording heat output, electrical input and flow. Demonstrate controls, alarms and the approved response to source-side or distribution-side deviations. |
Agree the sample or case, measurement method, record and decision owner. Ask which evidence is included in the quotation. |
| Site and utility scope Coordinate drilling or ground works, loop commissioning, indoor plant space, electrical supply and condensate or drain arrangements where relevant. Allocate responsibility for the ground resource and hydraulic balancing. |
Provide the actual site information and connection boundary. Identify what IndustryApex supplies and what the installation site must prepare. |
| Service provision Maintain fluid quality, filters, heat exchangers, pumps and controls through the approved program. Preserve source and load temperature trends to identify changes in the ground loop or distribution system. |
Specify the required handover and support. Request the deliverables, responsible party and separately priced exclusions. |
| OEM/ODM engineering scope OEM hydraulic and control packages may be configured; ODM source loops or process temperatures require thermal and site engineering rather than extrapolation from a standard building-heating reference. |
Attach the current revision and mark requested changes. Ask for the approved scope, engineering responsibility and change-control record. |
| Upstream preparation and downstream handling interfaces | Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision. |
| Destination country and applicable installation requirements | Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision. |
| Production schedule, changeover mix and operator availability | State the required result and the operating case behind it. Request confirmation for that case and record any exclusions or assumptions. |
| Drawings, samples, inspection method and rejected-output criteria | Agree the sample or case, measurement method, record and decision owner. Ask which evidence is included in the quotation. |
How to compare ground source heat pump quotations
Return the same completed checklist to our engineering team when reviewing a revised offer. For each requirement, record the proposed configuration, included evidence, price boundary and open question. A blank response is an unresolved item; request clarification before treating two offers as equivalent.
- Ground source heat pump application and required process result: identify the requirement revision, the proposed response and the document that supports it.
- Heat load temperatures and ground resource: identify the requirement revision, the proposed response and the document that supports it.
- Hydraulic integration and controls: identify the requirement revision, the proposed response and the document that supports it.
Request separate scope lines for the main equipment, application-specific tooling or accessories, site connections, integration work, commissioning, training and support, where applicable. Record delivery terms, quotation validity and exclusions beside the quoted price. Keep optional items separate from items required for the stated result.
Ground source heat pump acceptance criteria: what must be agreed?
Use the following equipment requirements to frame the acceptance discussion:
- Required acceptance evidence: Verify the agreed thermal duty at stated source and load conditions, recording heat output, electrical input and flow. Demonstrate controls, alarms and the approved response to source-side or distribution-side deviations.
- Drawings, samples, inspection method and rejected-output criteria
Have the responsible engineering personnel agree the test case and method for the exact offered equipment. Record the input or sample identification, supplied configuration, observations or measurements, agreed decision criteria, open deviations and sign-off responsibility. Separate evidence available at the factory from checks that depend on the installed site. Retain the accepted records with the equipment and document later requirement changes.
OEM/ODM ground source heat pump: define the change boundary
- OEM/ODM engineering scope: OEM hydraulic and control packages may be configured; ODM source loops or process temperatures require thermal and site engineering rather than extrapolation from a standard building-heating reference.
Distinguish approved standard options, branding and documentation from mechanical, electrical, control or process development. Send the intended application, current drawings, target market, quantities and requested changes. IndustryApex engineers review feasibility and define the proposed supply and engineering scope. Agree design ownership where relevant, the validation responsibility and the evidence that will accept the changed configuration. A reference photograph does not define the offered configuration or grant rights to relabel the pictured brand.
Build your ground source heat pump project brief
Use the worksheet to record your inputs and open questions. You can download the brief or carry it into the project request. It is sent to IndustryApex only when you complete and submit that request form.
Complete your product-specific RFQ worksheet
You can edit the final requirements on the request form. No inquiry is submitted from this worksheet.
Use this brief in my project request ↗Discuss the equipment scope with our engineers
Send the completed brief with the required result, destination and purchase timing. Our engineers can review the equipment configuration, application interfaces and requested customization, then identify the information still needed for a confirmed quotation.
Request a ground source heat pump quotation ↗ · Discuss OEM requirements · Discuss ODM engineering
Related equipment scope: Air source heat pump · EV AC charging station · EV DC fast charger.
Define your equipment requirements
Review the Ground source heat pump buying guide for the complete equipment scope.
Discuss this equipment project ↗ · OEM requirements · ODM requirements. Configuration and feasibility are reviewed for your application.
Explore the Ground source heat pump buying guide and RFQ checklist ↗
Frequently asked questions
What belongs in an RFQ for ground source heat pump?
Start with ground source heat pump application and required process result, heat load temperatures and ground resource, hydraulic integration and controls. Complete the remaining product-specific requirements in the worksheet, and attach the relevant drawings, sample information and site records. State the destination, required result and purchase timing so our engineers can review a defined project.
How do I compare ground source heat pump quotations on the same basis?
Use the same requirement revision for each comparison. Record the proposed configuration, included evidence, required accessories or integration, commissioning responsibilities, delivery terms and exclusions. Request a written response to unresolved requirements rather than comparing the main equipment price alone.
What belongs in the ground source heat pump acceptance record?
Identify the approved input or sample, exact configuration, agreed method, observations or measurements, decision criteria, deviations and responsible sign-off. Agree with the responsible engineering personnel what can be checked at the factory and what depends on the installed site.
Can IndustryApex review OEM/ODM ground source heat pump requirements?
Yes. Send the application, requested changes, drawings, target market, quantities and acceptance requirements. IndustryApex engineers review the proposed equipment and engineering scope. Feasibility, validation work, commercial terms and delivery are confirmed for the agreed project; the reference photograph does not establish branding rights.
Reference information
- WPF 66 Ground source heat pumps of STIEBEL ELTRON
- STIEBEL ELTRON Ground source heat pump technical document
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.