FYI, I'm a homebrewer and wouldn't recommend this as a starter kit. It's missing quite a bit, you'll need quite a bit more equipment to actually brew with the kit: a big pot, which you might already have (at least 5 gallons), bottles, likely some more cleaner/sanitizer and a couple extra small things. Also catalyst fermenters are way overrated for the price, if you want to get a nice fermenter get either a Speidel ($60, does almost everything this does with the exception of trub dumping, and also has much more headspace which is necessary for high ABV ales) or a SS brewbucket ($200, stainless steel which is much better than plastic, more headspace, conical which means you don't even have to dump the trub).
This is not a complete brewing kit. This is a fairly expensive fermenting tank with a few accessories. Fermentation is only part of the brewing process.
bluewaveAs a homebrewer for 2 years, I can tell you that temperature is the 2nd most important factor after sanitation. All yeast will have a recommended temperature range (usually around 16-24 Celsius), above with you will end up with too much fusel alcohols and a poorer beer. Within the temperature range, the lower the better for a nice clean fermentation. If your garage is stable and within the range, good for you!
bluewaveIf your garage is consistently in the low 60s it would work. A cool basement is usually the best place in a home to put the fermenter if you don't have something special to temperature control it.
Word of warning about Catalyst (why I don't use it anymore) it has little head space. So if you brew lagers or pilsners it works great, but strong ales need blowoff and it is quite messy in catalyst.
dmitriykI use a big mouth bubbler for a primary and a carboy secondary that give the option of lagering if I want to. No mention of boiling or mashing here?
Quick question, when using this kit, are we locked down to the receipes you offer on your site?
EDIT: Also , could it be used to brew other kind of alcohol ? Like mead or wine?
kaoru-samaYou could use whatever you wanted. I buy my ingredients from online shops and local homebrew suppliers. And yes, you could definitely ferment mead in one of these (I have in a glass carboy, which is what this basically is but inverted and plastic). Wine is a little more complex so you might be able to but no guarantees on quality.