EPA certified: what the two words on a stove listing actually promise

The number behind the label

EPA’s 2015 rule for new residential wood heaters came in two steps. Step 1 set 4.5 grams of particulate per hour. Step 2, which applied from May 2020, set 2.0 grams per hour on crib wood, with a 2.5 grams per hour alternative for stoves tested on real cordwood. The older 1988 limit was 7.5 grams per hour, so the current figure is a large cut.

Crib wood is the lab fuel: cut lumber stapled into a regular stack. It burns more evenly than the logs in your woodshed, so a certified figure describes a test, not your living room.

What it does not cover

The label says nothing about clearance to walls, floor protection or fire safety. Those belong to the safety listing and the manual. It does not tell you how much of the room the stove can heat. It also does not promise low smoke with wet wood: EPA’s own advice was to burn wood at 20 percent moisture or less.

A note on EPA’s own pages

EPA stopped updating its Burn Wise program pages on October 30, 2025, and they now stand as a historic record. Treat any list of certified stoves you find there as dated, and confirm the model with the maker or the label on the stove.

How to read it on a listing

Look for the words on the listing and the permanent label on the back of the stove. A listing that says “EPA certified” with no model number gives you nothing to check, and a seller’s phrase such as “EPA compliant” is not the same claim. On this site we repeat what the listing states, and we say so when a listing is silent.