StoveRatings

EPA snapshot 2026-10-23

Quadrafire Discovery II (3100 ACC Series, 31M-ACC Limited Edition)

Previously certified

EPA lists Quadrafire Discovery II (3100 ACC Series, 31M-ACC Limited Edition) under Hearth and Home Technologies as a previously certified non-catalytic wood stove.

The listed emission rate is 1.1 grams per hour.

The listed HHV efficiency is 74 percent.

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 1.1 grams per hour
HHV efficiency 74 percent
Heat output 11,900–43,200 BTU/hr
Firebox Not listed
CO 1.5 g/min
Certified fuel Crib Wood
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 Hearth and Home Technologies hub. This page lists 40 of the other 127 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

Heat output

Hearth and Home Technologies hub · EPA Certified Wood Heater Database