At least these are for “future” heaters.
Check it out:

The Environmental Protection Agency proposed new standards Friday for harmful emissions from new woodstoves and heaters, saying the rules could yield as much as $2.4 billion in annual public health benefits.

The draft regulations follow a legal challenge from environmental and health advocates who contend in a lawsuit that updated regulations are long overdue. Emissions standards for residential woodstoves and boilers were last updated 25 years ago.

The proposed rule, which would not take effect until 2015, would only apply to wood heaters made after that — not those currently in homes or on sale, the EPA said. The draft regulations would not cover fireplaces, fire pits, pizza ovens or barbecues.