Calculate annualized leak rates for EPA 608 compliance.
Comfort Cooling (Threshold: 10%)
Commercial Refrigeration (Threshold: 20%)
Industrial Process Refrigeration (Threshold: 30%)
Other Appliances (Threshold: 10%)
Estimated Annualized Leak Rate:
0%
How to Calculate Refrigerant Leak Rate
Under EPA Section 608 regulations, owners and operators of refrigeration and air conditioning equipment containing 50 or more pounds of ozone-depleting substances (ODS) or substitute refrigerants (like HFCs) must calculate the leak rate every time refrigerant is added.
The Formula (Annualizing Method):
Leak Rate % = [(Pounds Added / Full Charge) x (365 / Days Since Last Addition)] x 100
Current EPA Leak Rate Thresholds
Equipment Category
Threshold (%)
Industrial Process Refrigeration (IPR)
30%
Commercial Refrigeration
20%
Comfort Cooling (A/C)
10%
Example Calculation
If you have a commercial refrigerator with a 100 lb full charge and you just added 10 lbs of refrigerant, and it has been 180 days since the last time refrigerant was added:
(10 lbs added / 100 lbs full charge) = 0.1
(365 days / 180 days since last service) = 2.027
0.1 x 2.027 = 0.2027
Leak Rate = 20.27%
In this scenario, since the threshold for commercial refrigeration is 20%, the unit is slightly over the limit and requires repair according to EPA guidelines.
function calculateLeakRate() {
var fullCharge = parseFloat(document.getElementById('fullCharge').value);
var amountAdded = parseFloat(document.getElementById('amountAdded').value);
var daysSince = parseFloat(document.getElementById('daysSince').value);
var threshold = parseFloat(document.getElementById('equipmentType').value);
var resultDiv = document.getElementById('leakResult');
var percentOutput = document.getElementById('percentOutput');
var complianceStatus = document.getElementById('complianceStatus');
if (isNaN(fullCharge) || isNaN(amountAdded) || isNaN(daysSince) || fullCharge <= 0 || daysSince threshold) {
complianceStatus.innerHTML = "ACTION REQUIRED: This leak rate exceeds the EPA threshold of " + threshold + "%. You are required to repair the leak within 30 days and perform follow-up verification tests.";
complianceStatus.className = "compliance-box status-alert";
} else {
complianceStatus.innerHTML = "COMPLIANT: This leak rate is below the EPA threshold of " + threshold + "%. Ensure all records of refrigerant addition are maintained for at least 3 years.";
complianceStatus.className = "compliance-box status-ok";
}
// Smooth scroll to result
resultDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}