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Primavo / Tools / GSHP Sizer

CALCULATION TOOLPRE-RELEASE · v0.3

GSHP Sizer

Vertical borehole ground heat exchanger sizing for heating and cooling from first principles, with the MCS look-up method as the compliance check.

Join the release listWhat it does

What it does

Design methodLine-source / g-function borehole sizing from ground conductivity, undisturbed temperature, borehole resistance and design fluid temperatures
Heating and coolingMonthly load superposition so the loop is sized for the annual thermal balance; passive and active cooling modes
Compliance checkMIS 3005-D / MCS 022 look-up shown beside the first-principles result
Open loopScreening plus an England EPR consents screen for abstraction and discharge
Site-check modeEngineer issues and locks the design; nine hold points let the installer re-run the as-built field
InputsManual entry or CSV import of heating and cooling loads

What you get

  • GSHP-Sizer-v0.3.html, a single file that works offline
  • Method note (PDF): equations, assumptions, standards referenced
  • Worked example with inputs and expected outputs
  • Primavo software licence and your licence key; horizontal, slinky and pile sizing as a free update when released
Screenshot to add: tools/gshp-sizer borehole screen
(see the comment in this file for the image tag)

Runs in Chrome, Edge, Firefox and Safari. No install, no account, no data leaves your machine.

Licence

Pricing

Perpetual licence for the version purchased; minor updates free. Prices exclude VAT. Payment and delivery are handled by Gumroad; the download includes the tool, the method note, a worked example and the licence.

Single user

£149one-off
  • One named user, up to two devices
  • Perpetual licence for this version
  • Method note and worked example
  • Email support for installation and use
Join the release list

Company

£449one-off
  • Up to five named users in one organisation
  • Perpetual licence for this version
  • Method note and worked example
  • Priority email support; extra seats on request
Register interest

Sold under the Primavo software licence. Liability is limited to the price paid. Calculation aid for competent engineers; it does not replace design responsibility.

Questions

Before you buy

When is it released?

The vertical borehole and open-loop version is in final testing. Join the release list and you will be told first, with launch pricing.

Is it MCS-approved?

No. It applies the MCS look-up method as a check. MCS does not approve calculation tools; certification of the installation remains the certified installer's responsibility.

Does it replace a thermal response test?

No. Ground thermal properties are inputs. The tool sizes the array from the values you give it.

Will horizontal and slinky collectors be covered?

Yes, as a free update to version 0.x licence holders.