S244, Pyropak, Osburn 900

Previously certified

EPA lists S244, Pyropak, Osburn 900 under Stove Builder International, Inc. as a previously certified non-catalytic wood stove.

The listed emission rate is 5.3 grams per hour.

EPA does not list an HHV efficiency for this model line.

Source: EPA Certified Wood Heater Database, snapshot 2026-10-23.

EPA rows

EPA result rows for this model line
Field Row 1
Status Previously certified
Type Wood Stove
Subtype Non-Catalytic Stove
Emission 5.3 grams per hour
HHV efficiency Not listed
Heat output 10,600–26,100 BTU/hr
Firebox Not listed
CO Not listed
Certified fuel Not listed
Test method Not listed
2020 NSPS No

Retail names in the model line

These are the names split from EPA's model cell. They are aliases for this line, not separate listings.

Other model lines from this manufacturer

All model lines on the Stove Builder International, Inc. hub. This page lists 40 of the other 89 lines.

Nearest model lines by EPA figures

Nearest means the smallest absolute difference on that EPA figure, among other Wood Stove model lines that list it. Ties are ordered by model name.

Emission

HHV efficiency

EPA does not list an HHV efficiency to compare, or no other line lists one.

Heat output

Stove Builder International, Inc. hub · EPA Certified Wood Heater Database