Sotz auto draft

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.

TecknoTime99

New Member
Mar 17, 2025
1
Pennsylvania
I came across a Sotz auto draft and a monster maul in a basement clean out. Does anyone have any idea what they are worth. I’m looking to see what there worth
[Hearth.com] Sotz auto draft
 
The draft control - maybe scrap value. The monster maul in decent condition is going for around $145 on eBay. There are several though, so a lower price would sell faster.
 
What the heck does that Sotz thing do anyway?
It’s a thermostat control that opens and closes air intake with a bimetal spring.
 
I had a Sotz Auto draft on my Fisher Grandma stove 45 years ago. It worked great. Just make sure you have the thick rock wool insulation between the stove door and the bimetallic spring. I believe it may have had a cut out for the bimetallic spring so it reads the door temperature and the insulation will keep the rest of the body cooler.