A small fireproof safe keeps what's inside below a set temperature for a set amount of time during a fire. Four kinds of products are sold under that name: fire chests, small home fire safes, data media safes and small burglar-fire safes. Most of them are built to protect paper. Many carry no burglary rating, and only some are rated to keep water out. The right one depends on what you plan to store and which of those risks worries you most.
We've been selling safes at Safe & Vault Store since 1948, more than 150,000 of them. No safe is completely fireproof. A fire rating tells you how long a safe kept its interior below a certain temperature in a furnace test. When you shop, two questions matter most: is the rating long enough for a fire where you live, and does it protect the kind of item you're storing?
What each type of small fireproof safe protects
| Type | Built to protect | Not built for | Typical fire rating |
|---|---|---|---|
| Fire chest or portable fireproof lock box | Passports, titles, certificates, cash, a checkbook | Theft. It's light enough to carry away | 30 minutes, some 60 |
| Small home fire safe | Household documents, cash, small jewelry | Burglary, unless it also carries a burglary rating | 30 minutes to 2 hours |
| Data media safe | Hard drives, SSDs, thumb drives, backup tapes | Large amounts of paper. The interior is small for the outside size | 1 hour with the interior held below 125°F |
| Small burglar-fire safe | Cash, jewelry and documents together | Moving around. It's heavy and should be bolted down | 1 to 2 hours, plus a burglary rating |
A fire rating and a burglary rating measure different things. The fire rating tells you how long the safe kept its interior cool enough to protect what's inside. The burglary rating tells you how long the safe held up against someone trying to break in. A safe can have one without the other, and most small fire safes have only the fire rating. Water protection is a third, separate rating. Some small safes carry it and many don't.
When you compare two models, check which of those ratings each one has before you compare anything else. If a model doesn't list a burglary or water rating, assume it doesn't have one.
A fire and water resistant document bag is not a safe. It has no lock and no rigid body. It's an add-on that goes inside a safe to give your papers an extra layer of protection, and it's a good one for a safe that has no water rating.
Fire chests and portable fireproof lock boxes
A fire chest is a molded box with fire-resistant insulation between an inner and an outer shell, closed with a simple key lock. It's the least expensive fire protection you can buy, and for a small stack of documents it's often enough. The Tracker FC17 Portable Fire & Water Resistant Container is a good example: it's UL rated to keep its interior below 350°F for 30 minutes, it weighs 19.7 pounds, and it has a barrel key lock and a carry handle. It's also built to resist water.
Because a chest is light, you can take it with you in an evacuation, which matters if you live where wildfires are common. A burglar can carry it out of the house just as easily. Buy a chest for protection from fire, and keep it somewhere a burglar isn't likely to look. Our full range is in the Portable Fireproof Lock Boxes collection.
Small fireproof home safe options
A small home fire safe has a steel body, a heavier door and locking bolts, and many come with an anchor hole in the bottom so you can bolt them down. Many also carry a longer fire rating than a chest, though not all do. At this size, the options differ mainly in their shape and in what they're designed to hold:
- A compact two-hour home safe for documents, cash and small jewelry. The Hollon HS-310E 2-Hour Home Safe is rated for two hours in a fire test at 1,850°F, holds 0.53 cubic feet and stands 11.75 inches tall. It has a pre-drilled anchor hole and comes with the mounting hardware.
- A taller safe with nearly twice the room. The Hollon HS-500E 2-Hour Home Safe is rated for two hours in a fire test at 1,850°F, holds 0.94 cubic feet and has an electronic keypad lock. It weighs 121 pounds and has one anchor hole in the bottom for bolting it down.
- A file safe if your papers are in hanging folders. The Sentry FHW40100 Fireproof & Waterproof File Safe fits hanging files, is UL Classified for 30 minutes at 1,550°F, and is ETL Verified to protect against flood damage for up to 72 hours. Its key lock is meant to keep out children and casual snooping, not a determined burglar.
You can compare more models in the Small Fireproof Safes collection.
What fire rating do you need for a small safe?
Fire ratings for small safes generally come in 30, 45, 60, 90 and 120 minutes. What you store matters, but the bigger factor is how long a fire would burn before firefighters get it under control, and that depends on where you live.
If you're within about 15 minutes of a fire department, a one-hour rating is usually enough. Rural properties with longer response times should lean toward 90 minutes or two hours. Protection still matters after firefighters arrive. The safe sits in hot debris while crews put the fire out and check for hot spots, and heat keeps moving through its walls into the interior after the flames are gone.
Modern homes also burn faster than most people expect. In side-by-side room burns run by UL's Fire Safety Research Institute, a room furnished with modern synthetic materials reached flashover in 3 minutes and 30 seconds, while an identical room with older natural-material furnishings took 29 minutes and 30 seconds. In a fire that develops that fast, the room is fully burning well before firefighters arrive, and a safe inside it is exposed to the fire for most of that time.
The furnace temperatures used in fire testing are higher than a typical house fire. Most home fires burn at 1,100°F to 1,300°F, while UL and similar tests expose safes to 1,700°F to 1,850°F. Our fire ratings page explains how each testing standard works. Not every safe at this size carries a UL or ETL label, and that isn't automatically a problem. Independent certification is the stricter standard, but a manufacturer that publishes its test method and stands behind its rating is also a reasonable choice.
Why a standard fire safe won't protect hard drives or thumb drives
A standard fire safe carries a UL Class 350 rating, which means its interior stays below 350°F during the test. That limit is set for paper, which starts to char above it. Hard drives, SSDs, thumb drives and backup tapes are damaged at much lower temperatures. Digital media needs a safe that keeps its interior below 125°F, the limit UL calls Class 125.
Moisture is the second problem. The insulation in most fire safes releases moisture as steam when it heats up, and some of that steam gets into the storage space. Papers usually come out damp but readable. To keep them dry, put them in a fire and water resistant bag, such as the Tracker FB1511 Fire & Water Resistant Bag, inside the safe. Drives and tapes don't survive that combination of heat and moisture. If you keep a backup drive next to your tax records in a Class 350 safe, the records can come through a fire while the drive is ruined.
A data media safe is built for this. The Hollon HDS-500E Data Media Safe keeps its interior below 125°F for one hour with the outside at 1,850°F. Its rating comes from a KSG fire test rather than a UL Class 125 label, and Hollon also built it to resist water from sprinklers and fire hoses. It holds 0.22 cubic feet of drives and media. It has no bolt-down hole, because Hollon chose to keep the fire seal intact. The rest of our range is in the Data Media Safes collection.
Do small fireproof safes protect against theft?
Only if they carry a burglary rating. Keeping a small safe out of sight makes it less likely to be found, but concealment isn't a rating. A fire safe with a thin steel body and light bolts can be forced open with common hand tools. At under 100 pounds, a burglar can also carry it out and open it somewhere else.
If your safe has an anchor hole, bolt it down. Bolting a small safe to the floor through its anchor hole keeps someone from carrying it away, and it costs very little. Not every fire safe has an anchor hole. Don't drill one yourself, and don't bolt a fire safe through its back to a wall: drilling a new hole in a fire safe voids its fire rating, which is also why fire safes don't have mounting holes in the back. Burglar-fire safes almost always come with an anchor hole.
The other option is a safe with a burglary rating. A UL Residential Security Container (RSC) rating means the safe held up to five minutes of attack by a technician using common hand tools. Five minutes can sound short. Every minute a burglar spends working on a safe, though, makes it more likely they'll be heard or caught, and forcing them to spend that time is what the rating is for.
At the small end, the AMSEC CSC1413 Burglar & Fire Rated Safe carries a UL RSC burglary rating and a two-hour fire rating, tested to keep the interior below 350°F with the outside at up to 1,700°F. The body is under 20 inches tall (its rubber feet add an inch), it weighs 256 pounds, and it comes with an anchor hole and mounting hardware. You'll find more models in the Burglar Fire Safes collection, and our burglary ratings page explains what each rating is tested against.
Are small fireproof safes water resistant?
Usually not, and here's why. Small fire safes generally aren't sealed against water at all. The door isn't airtight, so water from a hose stream, a sprinkler or a flooded floor gets in. Molded chests and entry-level fire safes get their fire rating from their insulation and the fit of the door, not from a seal.
Some small safes and chests do carry a separate water rating, tested apart from the fire rating. The Sentry CHW30200 Fire & Water Chest is UL Classified for 30 minutes at 1,550°F and ETL Verified to protect against flood damage for up to 72 hours. More models with both ratings are in the Waterproof Safes collection.
If your safe has no water rating, put your documents in a Tracker FB1511 Fire & Water Resistant Bag inside it. The bag resists water and has a silicone-coated fiberglass outer layer tested to 1,022°F, so it also adds a second layer of fire protection around your papers.
Where to put a small fireproof safe
Put it where you'll actually use it. A safe in the far corner of an unfinished basement is secure, but if getting to it is a hassle, people stop using it and their documents end up back in a desk drawer.
Beyond that, a lower floor and an interior wall are better than an upper floor. The safe has less distance to fall if the floor collapses, and there's usually less to burn around it. Avoid the primary bedroom closet, because that's the first place burglars check. A less obvious spot where you can bolt the safe down is better than an obvious spot where you can't. If the room is damp or has high humidity, keep a desiccant from our Dehumidifiers & Desiccants collection inside the safe to control moisture.
When a small, simple fire safe is enough
Many buyers don't need more than a basic fire safe. If you're storing household documents, a passport or two, some cash and a few small keepsakes, and a house fire worries you more than a break-in, a fire chest or a small home fire safe covers it. Bolt it down if it has an anchor hole, and keep it where you'll use it.
A few situations call for a different safe. If you're keeping cash or jewelry that would be hard to replace, look at a burglar-fire safe. If you're storing drives or other media, you need a data media safe. If you've run out of room, the Medium Fireproof Safes collection is the next size up before full-size home safes.
Small fireproof safe questions we get asked
What is the difference between a fire chest and a small fireproof safe?
A fire chest is a light, portable box with a basic key lock, usually rated for 30 minutes. A small home fire safe has a steel body and locking bolts, often has an anchor hole, and is often rated for one or two hours, although some carry the same 30-minute rating as a chest. Choose a chest if you want something you can grab on your way out. Choose a safe if you want your documents kept in one place that's harder to carry off.
How long will a small fireproof safe hold up in a house fire?
It's built to last as long as its rating, under test conditions. A 30-minute chest is tested to keep paper below 350°F for 30 minutes in a furnace, and a two-hour safe for 120 minutes. Real fires vary in how hot they get and how long they burn, so choose a rating based on your fire department's response time and don't treat the number as a guarantee.
Can I store a thumb drive or hard drive in a small fireproof safe?
Not in a standard fire safe rated for paper. A Class 350 safe allows its interior to reach 350°F and can fill with steam during a fire, and both will destroy digital media. Use a data media safe that keeps its interior below 125°F.
Will a small fireproof safe stop a burglar?
Not unless it carries a burglary rating such as UL RSC. A fire-only safe is thin steel around insulation, and it's light enough to carry away. If it has an anchor hole, bolt it down. If theft protection matters as much as fire protection, buy a burglar-fire safe.
What size small fireproof safe should I buy?
Measure what you're storing now, then buy more room than that. Fire insulation takes up interior space, so a fire safe holds less than its outside size suggests, and you'll likely add to what you keep in it over time. If you're between two sizes, buy the larger one.
Talk it through with us
If you're deciding between a fire chest and a small home safe, or trying to work out whether your drives need a safe of their own, call us at 800-207-2259, Monday through Friday, 8am to 5pm Pacific. Our team doesn't work on commission, so we'll recommend the simplest safe that protects what you're storing, even when that's the less expensive one. You can also browse our Fireproof Home Safes collection and call with the models you're comparing.
