Industrial Heat Pumps & Electrified Thermal Systems worked example

Installation Labor at 29% rigging, tie-in, and site delay allowance: a worked example in industrial heat pumps & electrified thermal systems

Suppose rigging, tie-in, and site delay allowance falls to 29%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate field installation labor hours for industrial heat pump equipment from work package count, crew productivity, and allowance for rigging, tie-ins, and site delays.

The inputs for this scenario

  • Heat pump installation work packages: 45 packages (held at the documented default)
  • Installed packages per hour: 1.5 packages / hr (held at the documented default)
  • Rigging, tie-in, and site delay allowance: 29 % (the input this scenario stresses; the baseline uses 40)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base installation labor = heat pump installation work packages รท installed packages per hour.
  • Required installation labor works out to 38.7 hr at these inputs, and this is the headline figure for the scenario.
  • Base installation labor works out to 30 hr at these inputs.
  • Rigging, tie-in, and site delay allowance works out to 29 % at these inputs.
  • Installed packages per hour works out to 1.5 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where rigging, tie-in, and site delay allowance sits at 40% and the headline result is 42 hr, this scenario comes in 7.86% below the baseline at 38.7 hr.
  • It converts a count of installation work packages into base labor hours, then uplifts them by a rigging, tie-in, and site-delay allowance. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required installation labor: 38.7 hr (headline result)
  • Base installation labor: 30 hr
  • Rigging, tie-in, and site delay allowance: 29 %
  • Installed packages per hour: 1.5 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Installation Labor calculator, set rigging, tie-in, and site delay allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.