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o Step 1: The Step 1 PM emissions limit, effective in 2015, is identical to the current <br />qualifying level for EPA's voluntary Hydronic Heater Program. Most models that were <br />"Phase 2" qualified (using EPA Method 28WHH) under the voluntary program <br />automatically will be certified as meeting the Step 1 limit. This will reduce potential the <br />potential for testing delays. <br />• To ease the transition to cleaner heaters, EPA's final rule will allow hydronic heater <br />retailers sell their existing inventory until December 31, 2015. After that date, heaters <br />sold at retail must meet the Step 1 emissions limit in the final rule. <br />o In Step 2 (2020), hydronic heaters will have to meet stronger emissions limits (see table <br />below). <br />o The rule does not apply to heaters that are fueled solely by gas, oil or coal. <br />Emissions Limits and Compliance Deadlines for Hydronic Heaters <br />Step <br />Step 1 <br />Step 2 <br />PM Limit <br />• 0.32 pounds per million Btu <br />heat output (weighted <br />average), with a cap of 18 <br />grams per hour for individual <br />test runs. <br />• Limit is for crib testing. If <br />tested with cordwood, <br />emissions test method must <br />be approved, and stoves <br />must meet crib wood limit. <br />• 0.10 pounds per million Btu <br />heat output for each burn <br />rate <br />• Alternative limit: 0.15 pounds <br />per million Btu heat output <br />for each burn rate. If tested <br />with cordwood; method must <br />be approved. <br />DETERMINING COMPLIANCE <br />Compliance Date <br />60 days after final rule is <br />published in the Federal <br />Register <br />5 years after the final rule is <br />published (2020) <br />• To improve compliance and consumer confidence, the final standards require testing and <br />certification by internationally accredited laboratories and certification bodies. EPA will <br />2 <br />