Look up whether a central heating wood appliance (outdoor wood boiler, hydronic heater, or forced-air furnace) is EPA-certified using the EPA Certified Wood Heater Database (Central Heaters search)
domain: cfpub.epa.gov · 4 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Go to https://cfpub.epa.gov/oarweb/woodstove/index.cfm?fuseaction=app.searchwh (the Central Heaters search).
Filter by manufacturer, model, or heater type.
Compare the emission rate and efficiency values against the thresholds set by the 2015 NSPS for New Residential Hydronic Heaters and Forced-Air Furnaces (40 CFR Part 60 Subpart AAA).
Note the certified fuel type and whether the unit is 'Step 2' compliant.
Known gotchas
Don't confuse this with the Room Heaters search (fuseaction=app.search), which only covers wood/pellet stoves, not furnaces or boilers.
Model naming in the database can differ slightly from marketing names; try the manufacturer name alone if a specific model isn't found.
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