Industrial Heat Pumps & Electrified Thermal Systems worked example

Installation Labor at 46% rigging, tie-in, and site delay allowance: a worked example in industrial heat pumps & electrified thermal systems

This scenario runs the installation labor calculation on the strong side: 46% rigging, tie-in, and site delay allowance, with every other input held at its documented default. Use it when project managers and field superintendents are planning mechanical and electrical installation of heat pump skids, tanks, pumps, exchangers, and controls panels.

The inputs for this scenario

  • Heat pump installation work packages: 45 packages (unchanged)
  • Installed packages per hour: 1.5 packages / hr (unchanged)
  • Rigging, tie-in, and site delay allowance: 46 % (raised for this scenario; the documented default is 40)

Working through the calculation

  • Applying the documented formula (Base installation labor = heat pump installation work packages รท installed packages per hour) to the inputs above produces each figure below.
  • At this operating point the engine returns 43.8 hr for required installation labor, the number this scenario is built around.
  • At this operating point the engine returns 30 hr for base installation labor.
  • At this operating point the engine returns 46 % for rigging, tie-in, and site delay allowance.
  • At this operating point the engine returns 1.5 pieces / min for installed packages per hour.

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 4.29% above the baseline at 43.8 hr.
  • Use it during estimating and crew planning once the install scope is broken into discrete work packages. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required installation labor: 43.8 hr (headline result)
  • Base installation labor: 30 hr
  • Rigging, tie-in, and site delay allowance: 46 %
  • Installed packages per hour: 1.5 pieces / min

Run it with your numbers

  • Every input above is editable in the live Installation Labor calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.