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RSF 3600B: is it worth buying?

Wood stove by RSF / Industrial Chimney Company, Incorporated. Also sold as Pearl 3600B, Perle 3600B, Focus 3600B, Focus 3600Bi.

A middle-of-the-road wood stove: no standout strengths in the EPA tests.

The catch: less heat than most, more smoke than most new stoves and more wood used for the same heat.

How it compares

Against all 156 new wood stoves, from the EPA's lab tests. Longer bar = better.

HeatBetter than 24%
up to 25,406 BTU an hour
Clean burningBetter than 24%
1.7 grams of smoke an hour (legal limit 2)
Heat from each logBetter than 23%
70% efficient
Burn time (firebox size)Better than 37%
1.6 cubic feet

Source: EPA certification record 5217, checked Nov 1, 2026. Smoke compared as a share of each stove's legal limit, since stoves tested on real cordwood get a higher limit.

Better-matched picks with similar heat

If one of these matters more to you, start here.

Want less smoke? Osburn 2000 H Cleaner than 87% of new wood stoves, with similar heat.
Want longer burns? Supreme Astra 38 Bigger firebox than 95% of new wood stoves.

Other questions

What size chimney liner does it need?

Match the liner to the flue collar size in the RSF 3600B owner's manual, and have a certified installer confirm it fits your chimney.

It's non-catalytic. What does that mean?

There's no catalytic combustor, so no combustor part to replace down the road.

What do these numbers mean?

The EPA tests every new stove before it can be sold. "Heat" is the most heat it put out in the test. "Clean burning" is smoke per hour. "Heat from each log" is the share of the wood's energy that reaches your room. Firebox size tells you how much wood it holds, which drives how long it burns.

Check today's price: RSF 3600B