How do you calculate compressor test yield?

Divide compressors that passed by total compressors tested and multiply by 100. With 2,860 passing out of 3,000 tested, the compressor test yield is 95.33%.

What does the yield gap to target mean?

It's the difference in percentage points between actual yield and your target. Here 95.33% against a 97% target gives a gap of -1.67 points, meaning the line is running 1.67 points short of goal.

What is a good compressor test yield?

Mature compressor lines typically target 97-99%. A yield of 95.33% is workable but below a 97% target, signaling roughly 50 extra failures per 3,000 units that need root-cause attention.

Is this first-pass yield or final yield?

It's whatever population you enter. For true first-pass yield, count only units that passed on their first test attempt; if you include retested passes, the number reflects final yield and will look higher.

How many failures does a 1.67-point gap represent?

On 3,000 units, closing a 1.67-point gap means recovering about 50 compressors - the difference between 2,860 passing and the roughly 2,910 you'd need to hit 97%.

Why track yield by shift instead of monthly?

Compressor yield drifts with incoming lot quality, fixture wear, and operator changes. Shift-level tracking catches a drifting process within hours, while a monthly average can hide a bad week entirely.

Appliances, HVAC & White Goods Manufacturing calculator

Compressor Test Yield Calculator

Compressor test yield is the percentage of compressors that pass end-of-line performance and leak testing out of all units tested, and it's one of the most watched quality metrics on an HVAC or refrigeration line. Quality engineers and line supervisors use it to gauge incoming component quality, assembly stability, and the health of the test process itself. Because a compressor is the most expensive and failure-sensitive part of a sealed system, even a one-point yield drop translates into real scrap, rework, and field-reliability risk. Tracking yield against a target makes it immediately visible when a process drifts before it becomes a warranty problem downstream.

What this calculator does

Calculate compressor test yield from compressors passed, compressors tested, and target test yield.
a compressor test or quality engineer needs to track first-pass compressor test performance
It computes pass rate as passed compressors divided by total tested times 100, and reports the gap in points between that yield and your target.

Formula used

Compressor test yield = compressors passed test ÷ total compressors tested × 100
Compressor yield gap to target = compressor test yield - target compressor test yield

Inputs explained

Compressors passed test:
Total compressors tested:
Target compressor test yield:

How to use the result

Use it for daily or shift-level end-of-line quality reporting, or to check whether a process change moved compressor yield toward or away from target.
As a single pass/fail ratio it tells you the rate but not the failure mode, so a stable yield can still hide a shifting mix of leak, performance, and electrical rejects.

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 compressor test yield? Divide compressors that passed by total compressors tested and multiply by 100. With 2,860 passing out of 3,000 tested, the compressor test yield is 95.33%.
What does the yield gap to target mean? It's the difference in percentage points between actual yield and your target. Here 95.33% against a 97% target gives a gap of -1.67 points, meaning the line is running 1.67 points short of goal.
What is a good compressor test yield? Mature compressor lines typically target 97-99%. A yield of 95.33% is workable but below a 97% target, signaling roughly 50 extra failures per 3,000 units that need root-cause attention.
Is this first-pass yield or final yield? It's whatever population you enter. For true first-pass yield, count only units that passed on their first test attempt; if you include retested passes, the number reflects final yield and will look higher.
How many failures does a 1.67-point gap represent? On 3,000 units, closing a 1.67-point gap means recovering about 50 compressors - the difference between 2,860 passing and the roughly 2,910 you'd need to hit 97%.

Last reviewed 2026-05-12.