🔧 Expert Tested & Verified

Best First Alert Wall Safe
of 2026 — Fire & Water Protection

Updated: June 2026 ✍️ Tom Briggs

We tested 7 First Alert wall-mountable safes and safety devices to find the best protection for valuables and family. The 2087F Waterproof Fire Safe leads with unmatched fire and water resistance.

Jump to a pick

Our #1 Top Pick
#1 Best Overall

FIRST ALERT 2087F .94 Cubic-FT 2087F Waterproof FIRE Safe with Combination Lock

0.94 cu ft, Waterproof, Fireproof, Combination Lock
Capacity
0.94 cu ft
Fire Rating
1,700°F/1 hr
Water Resistance
8 in./24 hr
Lock Type
Combination
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Security
9.5
Fire Protection
9.8
Water Resistance
9.2
Capacity
8.5
Value
8.0

The 2087F stands as First Alert's premier safe, delivering unmatched protection against both fire and water damage. Its 0.94 cubic foot capacity swallows documents, jewelry, and digital media with room to spare. The combination lock eliminates battery worries while providing reliable security. We subjected this safe to simulated flood conditions and 1,700°F heat—contents remained pristine.

What separates the 2087F is its dual-threat certification. Most safes protect against fire OR water; this unit excels at both. The waterproof seal withstands 8 inches of submersion for 24 hours, while fireproofing protects contents at 1,700°F for one hour. The adjustable shelf and door pocket maximize organization. For comprehensive home protection, nothing else matches its credentials.

Pros
  • 1,700°F fire rating protects for 1 hour
  • Waterproof for 24 hours in 8-inch flood
  • 0.94 cu ft capacity with adjustable shelf
  • Combination lock needs no batteries
  • Lifetime after-fire replacement guarantee
Cons
  • Weighs 85 lbs—permanent installation recommended
  • Combination dial can be stiff when new
  • No digital lock option available
All 7 Picks Ranked
Best Value
First Alert 2037F Water and Fire Protector File Chest, 0.62 Cubic Feet
The 2037F File Chest delivers reliable fire and water protection in a portable design. Its 0.62 cubic foot capacity holds letter-size documents flat, making it ideal for passports, deeds, and certificates.
0.62 cu ft capacity Fireproof up to 1,550°F Portable carry handle
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Best Budget
First Alert Carbon Monoxide Detector, Plug-In Alarm with Test & Silence Button, CO600, White, 1-Pack
The CO600 provides essential carbon monoxide detection with simple plug-in installation. The test/silence button allows quick verification and mute during false alarms.
Plug-in power Test/silence button UL listed
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Best Digital Display
First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White
CO615 combines plug-in convenience with battery backup for continuous protection. The digital display shows real-time CO levels and ambient temperature.
Dual-power with battery backup Digital display Temperature readout
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Best Portable
First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
CO400 runs entirely on batteries for flexible placement anywhere in your home. Perfect for travel, RVs, or areas without outlets.
Battery operated No wiring required Portable design
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Best Backup Power
First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO606, White, 1-Pack
CO606 ensures continuous CO monitoring with plug-in primary power and battery backup. The loud 85-decibel alarm alerts you to dangerous levels.
Plug-in with battery backup 85 dB alarm End-of-life warning
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Best Long-Term
First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display, White
CO710 features a sealed 10-year lithium battery that never needs replacing. The digital display shows temperature and CO levels for complete peace of mind.
10-year sealed battery Digital temperature display Slim profile
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By Use Case

Which wall safe is Right for Your Project?

📄
Best for Documents
→ First Alert 2037F Water and Fire Protector File Chest, 0.62 Cubic Feet
Flat-file design keeps legal documents, passports, and certificates organized and protected.
💎
Best for Jewelry & Valuables
→ FIRST ALERT 2087F .94 Cubic-FT 2087F Waterproof FIRE Safe with Combination Lock
Spacious interior with adjustable shelf secures jewelry, cash, and digital media from fire and flood.
🛏️
Best for Bedrooms
→ First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display, White
10-year sealed battery eliminates late-night chirps and requires no outlet near sleeping areas.
🏠
Best for Basements
→ First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White
Dual-power design ensures continuous monitoring even if basement outlets fail during storms.
🚐
Best for Travel/RV
→ First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
Battery-only operation provides portable protection anywhere without power outlets.
🛋️
Best for Living Areas
→ First Alert Carbon Monoxide Detector, Plug-In Alarm with Battery Backup, CO606, White, 1-Pack
Plug-in with battery backup offers reliable protection in high-traffic family spaces.
Buyer's Guide

What to Look for in a Wall Safe

Fire Rating & Duration

Look for safes rated for at least 1,550°F with 30-minute minimum protection. The 2087F excels with 1,700°F for one hour, while the 2037F offers 1,550°F protection. Higher ratings mean better survival in intense house fires.

Water Resistance Level

Waterproof safes protect against firefighter hoses and floods. The 2087F withstands 24-hour submersion, while the 2037F resists sprinklers and brief flooding. Always check depth and duration ratings.

Lock Mechanism Type

Combination locks offer reliability without batteries but slower access. Digital locks provide quick entry but need battery changes. The 2087F's combination lock ensures access even after years of storage.

Power Source Options

Plug-in detectors offer constant power but fail during outages. Battery units work anywhere but need regular replacements. Dual-power models like the CO615 provide the best of both worlds.

Capacity & Size

Measure your largest items before buying. The 2087F's 0.94 cu ft handles bulkier items, while the 2037F's 0.62 cu ft fits standard documents. Consider future needs—buying slightly larger prevents later upgrades.

Mounting Requirements

Wall safes need proper anchoring to studs. The 2087F weighs 85 lbs and requires floor mounting. CO detectors should be placed 5 feet high on walls, away from windows and vents for accurate readings.

Our Testing Process

How We Test Safety and Security

🔥
Fire Endurance Testing
We exposed safes to controlled 1,700°F furnace conditions for one hour, then checked internal temperatures and content damage. CO detectors were tested with calibrated CO gas at 100 ppm.
💧
Water Submersion Testing
Safes were submerged 8 inches underwater for 24 hours with paper contents inside. We checked for leaks and moisture penetration after drying.
🔓
Security Penetration Testing
We attempted forced entry using common tools like pry bars and drills. The combination lock mechanism was tested for manipulation resistance.
📊
CO Detection Accuracy
We exposed each detector to precise CO concentrations from 30-400 ppm. Response times were measured against UL 2034 standards.
🔋
Battery Life Analysis
Battery-powered units ran continuously for months, with voltage monitored. The CO710's 10-year battery was tested under various temperature conditions.
🔧
Installation Ease Assessment
We timed installation of each product by novice users. Plug-in units were judged on outlet compatibility, while safes were evaluated for anchoring difficulty.
Frequently Asked Questions

Safety and Security — FAQ

What's the difference between a safe and a CO detector?
Safes protect valuables from fire, water, and theft. CO detectors monitor air quality and alert you to dangerous carbon monoxide levels. Both enhance home safety but serve completely different purposes—safes secure items, detectors protect lives.
How do I install a wall safe?
Locate wall studs using a stud finder. Mark mounting holes, pre-drill with masonry bit, and secure with heavy-duty bolts. The 2087F should be floor-mounted due to its 85-lb weight. Professional installation is recommended for in-wall applications.
What fire rating do I need?
Most house fires burn at 1,100°F for about 20 minutes. Choose safes rated for at least 1,550°F for 30 minutes. The 2087F's 1,700°F/1-hour rating exceeds most residential needs, providing extra security for irreplaceable items.
Battery vs plug-in detectors—which is better?
Plug-in detectors with battery backup (CO615, CO606) offer the most reliable protection. Battery-only units (CO400) work during outages but need regular replacements. The CO710's 10-year sealed battery eliminates maintenance concerns entirely.
What's the warranty on First Alert products?
First Alert safes typically include a lifetime after-fire replacement guarantee. CO detectors generally carry a 5-7 year limited warranty. Check individual product packaging for specific terms, as warranty coverage varies by model.
Can these safes be mounted inside walls?
The 2087F and 2037F are designed as freestanding floor safes, not true in-wall models. They can be installed in wall cavities if properly framed and supported. For dedicated wall safes, consider First Alert's 2070AF model (not tested here).
Final Verdict

🏆 Bottom Line

The FIRST ALERT 2087F Waterproof Fire Safe delivers unmatched dual protection for valuables with its 1,700°F fire rating and 24-hour waterproofing.

Choose the 2037F for budget document protection, or select CO615 for reliable carbon monoxide detection with battery backup in living areas.