How do you calculate good compressor capacity per shift?

Multiply output per cycle by available cycles for gross capacity, then multiply by uptime and first-pass yield. With 1 compressor/cycle, 2,200 cycles, 88% uptime, and 97% yield, gross is 2,200 and good capacity is 1,877.92 per shift.

How many compressors are lost to downtime versus defects?

In the example, 264 compressors are lost to the 12% downtime and another 58.08 are lost to the 3% first-pass defect rate, leaving 1,877.92 good units from a gross of 2,200.

What is a good first-pass yield for a compressor line?

Mature hermetic compressor lines typically target 96-99% first-pass yield. The example's 97% leaves about 58 units per shift scrapped or held, which is meaningful volume worth a Pareto analysis.

Why use first-pass yield instead of final yield?

First-pass yield reflects units that pass without rework, so it captures the true quality cost including rework labor. Final yield can mask a line that only hits target after expensive rework loops.

What uptime should I plug in?

Use measured availability from your OEE or downtime tracking, not a target. The example's 88% means 12% of cycles are lost to stoppages, changeovers, and faults; pulling the real figure keeps the capacity number honest.

How do I raise good capacity the fastest?

Compare the two loss buckets. Here downtime costs 264 units and defects cost 58, so an availability project returns far more capacity than a yield project at this line's current numbers.

Appliances, HVAC & White Goods Manufacturing calculator

Compressor Line Capacity Calculator

Compressor line capacity is the number of good, shippable compressors a line can deliver per shift after downtime and quality losses are subtracted from raw cycle capacity. Production planners and OEE-focused engineers on hermetic and scroll compressor lines use it to set realistic shift targets, expose where capacity leaks to downtime versus defects, and feed accurate numbers into downstream HVAC and refrigeration build plans. The power of the model is that it separates the two loss buckets, so you can see whether your shortfall is a maintenance problem or a quality problem. Treating nameplate cycles as real output is one of the most common planning errors on these lines.

What this calculator does

Estimate good compressor production capacity from compressors per cycle, available cycles, line uptime, and first-pass yield.
an operations or manufacturing engineer needs to confirm compressor line capacity for appliance or HVAC demand
It computes good compressor capacity per shift by multiplying gross cycle capacity by uptime and first-pass yield, and breaks out the losses to downtime and defects.

Formula used

Gross compressor capacity = compressors completed per line cycle × available compressor line cycles
Good compressor capacity = gross compressor capacity × compressor line uptime × first-pass compressor yield

Inputs explained

Compressors completed per line cycle:
Available compressor line cycles:
Compressor line uptime:
First-pass compressor yield:

How to use the result

Use it when setting shift targets, diagnosing where capacity is lost, or feeding a realistic supply number into a refrigeration or HVAC build schedule.
It assumes one steady cycle rate and a single yield figure, so it will not capture ramp-up, mid-shift rate changes, or rework that recovers some defective units.

Current U.S. benchmarks

Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate good compressor capacity per shift? Multiply output per cycle by available cycles for gross capacity, then multiply by uptime and first-pass yield. With 1 compressor/cycle, 2,200 cycles, 88% uptime, and 97% yield, gross is 2,200 and good capacity is 1,877.92 per shift.
How many compressors are lost to downtime versus defects? In the example, 264 compressors are lost to the 12% downtime and another 58.08 are lost to the 3% first-pass defect rate, leaving 1,877.92 good units from a gross of 2,200.
What is a good first-pass yield for a compressor line? Mature hermetic compressor lines typically target 96-99% first-pass yield. The example's 97% leaves about 58 units per shift scrapped or held, which is meaningful volume worth a Pareto analysis.
Why use first-pass yield instead of final yield? First-pass yield reflects units that pass without rework, so it captures the true quality cost including rework labor. Final yield can mask a line that only hits target after expensive rework loops.
What uptime should I plug in? Use measured availability from your OEE or downtime tracking, not a target. The example's 88% means 12% of cycles are lost to stoppages, changeovers, and faults; pulling the real figure keeps the capacity number honest.

Last reviewed 2026-05-12.