I'm Thinking Of Getting A Fireproof Safe For My Coins, But..

Anything to help with the moisture problems helps your coins. Damp, stagnate air is not good for most collectibles. Best bet is to also remove the moisture with a dehumidifier in the area near your safe. Check your coins every few months. Another option is a safe deposit box at your bank. Yeah, inconvenient but safer than a safe at home. Like I told my friend who bought a humongous safe a few years ago when he was worried about robberies: "I don't care how big your safe is, if a thief wants it bad enough he'll get in it, one way or another. And some of those one way or anothers can be real bad".

If a pro safe cracker hits...game over.

I always say hide your valuables in plain sight, disguised as something else or inside a cheap object. Safes are for show, as decoys, so put dummy valuables in your safe or lead shot to weight it down. One crowbar to the exposed hinge and your stuff is gone. That's my take on that.

You can buy fire and waterproof safes at your local Sams club.

If you want to prevent moisture buildup.. stick them in a zip lock bag with one or two folded paper towels, and moisture in the bag will got to the towels. It's cheap and very effective.
Some people I know have used rice instead of a paper towel, rice will absorb a ton of moisture. It's water and fire proof so no insects..

The big box home improvement and sports equipment stores are a decent place to get a reasonably-priced safe if you want to lock up your .22 long gun and keep your kids from getting at your Playboy stash. However they aren't much for theft deterrent or fire protection (relatively).

Bolting them down, as edweather said, is very important and increases their theft protective value substantially. Most thieves would prefer to roll your safe out and crack it on their own turf rather than hack at it in your house while the cops are on their way.

Consider what the value is of what you're trying to protect. Then do your research and spend the appropriate money. Think of it like auto insurance. No one likes to pay it but it's part of driving a car. And you typically tailor your insurance to what you're willing to pay vs what you're willing to lose. Similar with a safe but in a one-time payment. Also, layer your protection. Get a security system if you're going to have a safe. Yes it takes the cops a while to show up sometimes, but if your safe is bolted down and has a good T rating, it's likely that it'll still be locked and standing when the cops get there and chase the idiots off (or hopefully arrest them).

Also, you may be better off taking advantage of a free bank safe deposit box that comes with many checking accounts if your stash is relatively small. Or even if you have to pay $20/month for a bigger box, how long would that take to pay for a $2000 safe? Answer: 100 months. That's a long time. And you'll likely move at least once in 8 years.

Your home safe is in place to prevent the amateurs from getting at your stuff. It will stop the neighborhood kids, the nosy ex wife and may save your stuff from a fire.

The professional is a whole other story. If the professional wants your stuff he will get it. You may slow him down but he'll eventually get in to it. You may even be more than happy to open it for him, too.

I keep mine with my guns. Lots of moisture absorption products and such. Half the safe is guns, the other half coins. They never mix.