I remember the inventor of the Behmor machine saying that the smoke suppression was required by regulation of some sort… ao yeah they are kinda necessary in a sense.

Like I said, do whatever you like, but I advise against roasting coffee indoors without an exhaust fan that dumps the exhaust outside, at minimum.

Yes it would, with regard to ventilation.

During coffee production of both flavored and unflavored coffee, production employees become exposed to dangerous VOCs resulting in irreversible lung damage (Ref. 1). The most hazardous VOCs released from flavorings and naturally from roasting coffee beans are diacetyl and 2,3-pentanedione. Exposure to even small amounts over time or large concentrations over a short period of time can have drastic health effects (Ref. 2).

https://www.sentryair.com/blog/industry-applications/chemical-solvents/diacetyl-hazards-coffee-roasting-industry/

(Yes I know they’re trying to sell you air filtration systems or whatever… but they reference several scientific studies in their literature)

Yes I used to roast at home several times a week on a Behmor machine. There’s a reason all the at-home machines (and commercial machines for that matter) have smoke suppression…

Edit to add that I started with a popcorn popper (which is the usual entry into the hobby) then built a roaster out of a heat gun and a flour sifter before I went on to get the Behmor. All of my roasting was done outside or in the garage with fume hood and exhaust fan.

Do whatever you like but there’s a reason there are things like occupational safety regulations and the like.

Not to be a downer, but you’re gonna get a lot of smoke roasting beans in your electric oven (gas would have an exhaust to the outside). That smoke really isn’t good for you to breathe in either. Prolonged exposure will lead to “popcorn lung”. It’s also going to make your stove very dirty in the inside in short fashion. Also, you’re gonna melt some plastic colanders if you drop coffee beans into them right out of a 400-500 degree oven. Not to mention that plastic + heat = not good (even without the melting)

If you want to try roasting coffee beans at home once or twice on the cheap, you’re better off “pan roasting” them outside on a camp stove or something similar if you don’t have an exhaust fan right above your stove that connects to outside.

Specialized at-home electric roasters exist and aren’t that expensive. Certainly cheaper than smoke mitigation.

Oh I missed that small detail thanks.

Is your oven electric or gas?

Makes sense. Thanks for clarifying.

Maybe it’s me misunderstanding, but 127 is considered room temp?