Compressed Air Leak Cost Calculator

Leak flow must match the compressor rating reference conditions.

This selection changes review context only. Formulas and example inputs stay unchanged. Check the model assumptions and applicability for the actual process.

Identify the actual asset, process, work boundary, source documents, units and assumptions. Confirm that the selected model or template applies before using its results.

1 Inputs

Minimum: 0

Minimum: 0

Minimum: 0

Minimum: 1

Minimum: 0

2 Results

Annual cost of these leaks
$14,400
Wasted power
20 kW
Energy / year
120,000 kWh
CO₂ / year
48 t
Cost / day (avg)
$39.45
E = Q/100 × P₁₀₀ × h; C = E × p
Leak flow must match the compressor rating reference conditions. The model converts flow to proportional electrical power. Actual savings depend on compressor controls; verify unloaded operation and pressure after repairs.

Worked example

Example values are illustrative. Replace them with your measured data.

InputValue
Total leak flow100 CFM
Operating hours / year6000 h
Electricity rate0.12 $/kWh
Compressor specific power20 kW/100CFM
Grid emission factor0.4 kg/kWh

Annual cost of these leaks: $14,400

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About this calculator

How it works

Wasted power (kW) = (leak flow in CFM ÷ 100) × compressor specific power (kW per 100 CFM). Annual energy = kW × operating hours. Annual cost = kWh × electricity rate. CO₂ = kWh × grid emission factor ÷ 1,000 (tonnes). The tool also shows the average cost per day.

Worked example (illustrative inputs)

100 CFM of leaks, 6,000 hours a year, $0.12 per kWh, 20 kW per 100 CFM, 0.40 kg CO₂ per kWh. Wasted power = 20 kW. Energy = 120,000 kWh. Cost = $14,400 a year, about $39 a day. CO₂ = 48 t.

How to read the result

The relationship is linear, so halving the leak flow halves the cost. The result is only as good as the CFM estimate (from an ultrasonic survey or a load/unload test) and the specific power from the compressor's data.

When to use it

Use it to put a cost on a leak survey's findings and to justify a tag-and-fix programme.

À propos de ce calculateur

Traduction (brouillon) — à relire.

Fonctionnement

Puissance perdue (kW) = (débit de fuite en CFM ÷ 100) × puissance spécifique du compresseur (kW pour 100 CFM). Énergie annuelle = kW × heures de fonctionnement. Coût annuel = kWh × prix de l'électricité. CO₂ = kWh × facteur d'émission du réseau ÷ 1 000 (tonnes). L'outil indique aussi le coût moyen par jour.

Exemple chiffré (valeurs d'illustration)

100 CFM de fuites, 6 000 h/an, 0,12 $/kWh, 20 kW pour 100 CFM, 0,40 kg CO₂/kWh. Puissance perdue = 20 kW. Énergie = 120 000 kWh. Coût = 14 400 $/an, environ 39 $ par jour. CO₂ = 48 t.

Lire le résultat

La relation est linéaire : diviser les fuites par deux divise le coût par deux. Le résultat ne vaut que ce que valent l'estimation du débit (relevé ultrasons ou essai charge/décharge) et la puissance spécifique issue des données du compresseur.

Quand l'utiliser

À utiliser pour chiffrer les résultats d'une campagne de détection de fuites et justifier un programme de repérage et réparation.

حول هذه الحاسبة

ترجمة (مسودة) — للمراجعة.

طريقة الحساب

القدرة المهدرة (كيلوواط) = (معدل التسرب بالقدم المكعبة في الدقيقة CFM ÷ 100) × القدرة النوعية للضاغط (كيلوواط لكل 100 CFM). الطاقة السنوية = الكيلوواط × ساعات التشغيل. التكلفة السنوية = الكيلوواط ساعة × سعر الكهرباء. ثاني أكسيد الكربون = الكيلوواط ساعة × معامل انبعاث الشبكة ÷ 1000 (طن). وتعرض الأداة أيضاً متوسط التكلفة اليومية.

مثال محسوب (قيم توضيحية)

تسرب 100 CFM، 6000 ساعة سنوياً، 0.12 دولار لكل كيلوواط ساعة، 20 كيلوواط لكل 100 CFM، 0.40 كغ CO₂ لكل كيلوواط ساعة. القدرة المهدرة = 20 كيلوواط. الطاقة = 120,000 كيلوواط ساعة. التكلفة = 14,400 دولار سنوياً، نحو 39 دولاراً يومياً. CO₂ = 48 طناً.

قراءة النتيجة

العلاقة خطية، فخفض التسرب إلى النصف يخفض التكلفة إلى النصف. دقة النتيجة مرهونة بدقة تقدير التسرب (مسح بالموجات فوق الصوتية أو اختبار التحميل والتفريغ) والقدرة النوعية من بيانات الضاغط.

متى تستخدمه

استخدمها لتقدير تكلفة نتائج مسح التسربات وتبرير برنامج لوسم التسربات وإصلاحها.

In one line

Leak flow must match the compressor rating reference conditions. The model converts flow to proportional electrical power. Actual savings depend on compressor controls; verify unloaded operation and pressure after repairs.

Worked example

EXAMPLE

Illustrative values (the calculator defaults), not data from a real site.

Inputs
Total leak flow100 CFM
Operating hours / year6000 h
Electricity rate0.12 $/kWh
Compressor specific power20 kW/100CFM
Grid emission factor0.4 kg/kWh
Results
Annual cost of these leaks$14,400
Wasted power20 kW
Energy / year120,000 kWh
CO₂ / year48 t
Cost / day (avg)$39.45

Frequently asked questions

How do I measure total leak CFM?

The standard method is an ultrasonic leak detector survey, which tags and measures individual leaks that you sum to a total CFM. A rougher alternative is a load/unload test during a period with no production air demand — the percentage of time the compressor runs to maintain pressure with everything else off approximates the leak load.

What specific power figure should I use for my compressor?

Use your compressor's actual rated kW divided by its rated CFM output, scaled to per-100-CFM — typically around 18-22 kW per 100 CFM for a well-performing industrial compressor at roughly 100 psig. Check your compressor's nameplate or performance data for a precise number rather than relying on the default.

Are leaks really as significant a cost as this tool suggests?

Yes, in most industrial compressed-air systems leaks commonly account for a meaningful share — often cited around 20-30% — of total compressed-air demand, and because compressed air itself is an expensive utility, leak costs add up quickly even from many small leaks.

How quickly does a leak survey program typically pay back?

Ultrasonic leak surveys are relatively low-cost to run (equipment rental or an outside service) compared to the ongoing energy waste they identify, so a tag-and-fix program commonly pays for itself within weeks to a few months, especially in larger or older compressed-air systems that haven't been surveyed recently.

Does fixing leaks reduce compressor maintenance too, not just energy?

Often yes — a compressor that runs less to cover leak demand experiences less wear, and a leak-free system also tends to hold pressure more stable, which can improve the performance of pneumatic tools and equipment downstream. Those benefits aren't quantified by this calculator, which focuses on the direct energy cost.

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