The Best Fire Extinguishers: 4 Compared (and One to Skip)

RBE top pick

Amerex B402

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The B402 is the one that publishes everything: rating, discharge time, range, valve material, temperature limits and warranty. The PRO5 matches its 3-A:40-B:C rating for less money and is the sensible pick if you want two or three units rather than one.

A fire extinguisher is the rare purchase where the label is the product. Two red cylinders that look identical on a shelf can differ by a factor of four in tested Class B capacity, and one of them may be built so that no technician can ever open it. So we read UL ratings, manufacturer spec sheets, NFPA 10 service rules and the CPSC recall record rather than handling the units. The four here cover the two rechargeable ABC units most homes should look at, one non-traditional supplement, and the cheap disposable sold widely and deserves more scrutiny than it gets.

RBE top pick

Amerex

B402 5 lb ABC Dry Chemical Extinguisher

Buy it

A fully documented 3-A:40-B:C rechargeable that a service shop can open, inspect and refill for decades.

Best for: The person who wants one serious extinguisher near the kitchen or garage and intends to have it serviced.

$$ · mid-range

Why we like it

• UL and ULC rated 3-A:40-B:C, four times the listed Class B figure of a typical 2-A:10-B:C home unit.
• Drawn steel cylinder with an all metal anodized aluminum valve, so nothing structural is molded plastic.
• Amerex publishes the numbers most brands hide: 14 second discharge, 12 to 18 foot initial range, and a rated range of -65 F to 120 F.

Know before buying

• At 9.25 lb shipping weight it is a real object to hold one handed while aiming.
• The mono ammonium phosphate agent is acidic and can corrode untreated metal if it is not cleaned up quickly.
• Rechargeable ownership means paying for annual maintenance, a 6 year internal examination and a 12 year hydrostatic test if you follow NFPA 10.
• Sold mainly through fire equipment channels rather than the aisle where most people shop.

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First Alert

PRO5 Heavy Duty Plus Rechargeable Fire Extinguisher (FE3A40GR)

Buy it

The same 3-A:40-B:C rating as the Amerex in a unit sold through ordinary retail, with a longer warranty and a thinner spec sheet.

Best for: Buying two or three rechargeable units at once so you are not walking past a fire to reach the only one.

$ · budget

Why we like it

• 3-A:40-B:C rated and rechargeable by a certified professional, which is unusual at this price level.
• First Alert specifies a metal head, a corrosion resistant metal gauge and a metal pull pin with a safety seal.
• 12 year limited warranty and a heavy duty wall bracket in the box.

Know before buying

• First Alert does not publish the agent charge weight, discharge time or effective range on the product page.
• Listed product weight is 10.2 lb, slightly heavier than the Amerex despite the same rating.
• Same ABC dry chemical cleanup problem as any mono ammonium phosphate unit.
• The published detail stops at 'meets UL standards' rather than naming the listing standards the way Amerex does.

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Element

E50 Fire Extinguisher

It depends

A 230 gram stick with a 50 second discharge that solves the storage problem in a car, as long as you understand it is a supplement and not a replacement.

Best for: A glovebox, a motorcycle, a boat locker or a workshop bench, sitting alongside a UL listed extinguisher rather than instead of one.

$$ · mid-range

Why we like it

• 230 grams and 27 cm long, so it fits places a 5 lb steel cylinder does not.
• Element publishes a 50 second discharge, far longer than the 14 seconds a 5 lb dry chemical unit gives you.
• No cylinder, no propellant and no gauge to go out of range, with a stated operating range of -50 C to +80 C and no effective expiration for the solid charge.

Know before buying

• It carries no UL 711 rating, so it has no A, B or C number to compare against anything else here.
• It carries no UL listing, so it is not a substitute for a UL listed extinguisher where one is required, and Element itself describes it as suited to small fires and supplementary risks.
• Single use with no recharge path, and Element notes it is not recommended for outdoor live ember fires such as wood campfires.
• The published approvals are European and military, including CE and an Italian MTIC Intercert assessment for fire classes A, B, C and F, which is not what a US code official or insurer is looking for.

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We'd skip it

Kidde

Basic 110 Fire Extinguisher (FA110G)

Skip it

The default cheap home extinguisher: the smallest useful rating, a plastic handle, and a sealed design nobody opens to check.

Best for: A supplemental unit in a spare bedroom or a boat, never the only extinguisher in the house.

$ · budget

Why we like it

• 1-A:10-B:C is a real UL rating and covers ordinary combustibles, flammable liquids and energized electrical equipment.
• Aluminum cylinder keeps it light enough for almost anyone to lift and aim.
• USCG approved with the UL approved strap bracket, meeting 5-B compliance for boats and watercraft.

Know before buying

• 1-A:10-B:C is the low end of the scale, a fraction of the 3-A:40-B:C ratings on the two rechargeable units here.
• Single use by design. Kidde markets a 12 year service free build that requires no internal examination for the life of the product, which also means no one ever verifies the agent inside.
• Any discharge, even a one second test squeeze, ends its life. There is no recharge path.
• The FA110G nameplate appears in CPSC recall 18022 among the plastic handle models with date codes from January 2, 2012 through August 15, 2017. Units built after that date are outside the recall, but the recall covered about 37.8 million US units after roughly 391 reports of failure to discharge or nozzle detachment, 16 injuries and one death.

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How we judged the field

Five things decide whether a home extinguisher is worth owning. First, the UL 711 rating, because it is the only comparable performance number on the product and it is earned against standardized test fires rather than claimed in marketing. Second, whether the agent suits the hazard, since ABC dry chemical is versatile but leaves an acidic residue that can corrode untreated metal if it is not cleaned up fast. Third, construction, specifically whether the valve and handle are metal or molded plastic, which is the exact failure behind a recall of about 37.8 million US units. Fourth, whether the unit can be serviced, because NFPA 10 puts stored pressure dry chemical extinguishers on a 6 year internal examination and a 12 year hydrostatic test and a sealed disposable can meet neither. Fifth, how much the maker is willing to publish, which turns out to correlate closely with everything else.

The field splits cleanly. On one side are rechargeable metal valve units built to be opened, inspected and refilled, which is where the Amerex B402 and the First Alert PRO5 sit at the same 3-A:40-B:C rating from opposite ends of the retail world. On the other side are sealed single use units, of which the Kidde Basic 110 is a widely sold example and the reason this category needs a skip pick at all. Off to the side is a third thing entirely: the Element E50, which has no US rating, no cylinder and no service life, and which Element positions for supplementary risks rather than as a replacement. We picked one from each corner plus the two that most people should actually be choosing between.

The Amerex B402 is the one that answers questions before you ask them. Amerex publishes a UL and ULC rating of 3-A:40-B:C on a 5 pound charge, a 14 second discharge, a 12 to 18 foot initial range, a 9.25 pound shipping weight and an operating range of -65 F to 120 F. Construction is stated plainly: drawn steel cylinder, all metal anodized aluminum valve, conforming to ANSI/UL 299 and ANSI/UL 711. The warranty is 6 years. Nothing there is a surprise, which is the point, because the failure mode you are guarding against is a unit that looks fine and does nothing. The trade-off is that this is a real object: nine and a quarter pounds is a lot to hold steady while sweeping a nozzle, and the mono ammonium phosphate inside is the acidic powder that can corrode untreated metal if you do not clean it up quickly. It is also sold mostly through fire equipment suppliers rather than the aisle where you buy smoke alarms. Buy it if you want one extinguisher a technician can keep alive for twenty years.

The First Alert PRO5, model FE3A40GR, is the interesting one, because it carries exactly the same 3-A:40-B:C rating as the Amerex while sitting in ordinary retail at a lower tier. First Alert specifies a heavy duty metal head, a corrosion resistant metal gauge, a metal pull pin with a safety seal and a chemical resistant waterproof label, and it is rechargeable by a certified professional after use. Listed dimensions are 16.2 inches tall and 10.2 pounds, with a 12 year limited warranty and a heavy duty wall bracket included. What you give up is disclosure. First Alert does not publish the agent charge weight, the discharge time or the effective range, and the listing language stops at meets UL standards rather than naming UL 299 and UL 711 the way Amerex does. For most buyers that gap does not change the outcome, since the rating is the number that matters and it is identical. If your plan is two or three units rather than one, this is the sensible way to get there without dropping to a 1-A:10-B:C disposable.

The Element E50 is a 27 centimetre stick weighing 230 grams that produces 50 seconds of discharge, has no cylinder, no propellant and no gauge, works from -50 C to +80 C and, per Element, has no effective expiration for its solid charge. In a car or a boat that combination is hard to beat, and 50 seconds is more than three times what a 5 pound dry chemical unit gives you. The problem is what it is not. It carries no UL 711 rating, so there is no A, B or C number to line up against anything else on this page, and Element’s own page describes it as suited to small fires and supplementary risks. Its published approvals are CE, military and an Italian MTIC Intercert assessment covering fire classes A, B, C and F. Element also notes it is not recommended for outdoor live coal fires. Treat it as a second line of defence you can keep where a steel bottle will not fit, not as the extinguisher your house is counting on.

The Kidde Basic 110, model FA110G, is a very common home extinguisher, and that is the problem. It is rated 1-A:10-B:C, the low end of the scale, in an aluminum cylinder with a plastic handle and lever. Kidde markets a 12 year service free design that requires no internal examination for the entire life of the product, and correctly notes that under NFPA 10 single use extinguishers are exempt from the 6 year internal examination. Read that the other way around: nobody will ever open it to confirm the agent is still loose and the valve is still clear. Any discharge at all, including a test squeeze, ends its service life. And the FA110G nameplate is on the CPSC’s list of plastic handle models covered by recall 18022 for date codes from January 2, 2012 through August 15, 2017, a recall that spanned about 37.8 million US units following roughly 391 reports of failure to discharge or nozzle detachment, 16 injuries and one death. Units built after that date are not recalled. That is still the wrong lineage for your only extinguisher.

Amerex B402 5 lb ABC Dry Chemical Extinguisher vs First Alert PRO5 Heavy Duty Plus Rechargeable Fire Extinguisher (FE3A40GR): which should you buy?

The Amerex B402 and the First Alert PRO5 hold the same UL 711 rating, 3-A:40-B:C, which means they were tested against the same wood crib and heptane pan fires and passed at the same level. On paper the difference between them is not performance, it is documentation and construction detail. Amerex tells you the discharge lasts 14 seconds, the initial range is 12 to 18 feet, the cylinder is drawn steel, the valve is anodized aluminum and the unit is rated from -65 F to 120 F. First Alert tells you the head is metal, the gauge and pull pin are metal, the whole thing weighs 10.2 pounds and it is covered for 12 years. Both are rechargeable by a certified technician, which is the single most important line on either page.

So choose on strategy rather than specs. If you want one extinguisher, want it near the highest risk part of the house, and intend to actually put it on the NFPA 10 schedule of an annual external check, a 6 year internal examination and a 12 year hydrostatic test, buy the Amerex and hand it to a service shop once a year. If you would rather have three extinguishers than one, which is usually the better fire outcome, the PRO5 gets you the same rating in each room for less, and the longer warranty softens the fact that First Alert publishes less about the internals. The one thing neither answers is cleanup: both are ABC dry chemical, and if you have a room full of electronics you care about, that room wants a clean agent or water mist unit of its own.

What to look for

• Read the rating, not the size: UL 711 assigns the A number against wood crib and panel fires and the B number against a heptane pan fire, so a 3-A:40-B:C unit is a genuinely different machine from a 1-A:10-B:C one even when the cylinders look similar.
• Metal valve or walk away: the hazard CPSC described in the 2017 Kidde recall was units that clogged or needed excessive force to discharge, and the recall was defined around plastic handle designs, so a metal valve and handle is the cheapest insurance in the category.
• Rechargeable beats disposable for your main unit: NFPA 10 puts stored pressure dry chemical extinguishers on an annual external check, a 6 year internal examination and a 12 year hydrostatic test, and a sealed single use unit can receive only the first of those.
• Match the agent to the room: Dry chemical is generally a poor choice for delicate electronic equipment and clean agents are the usual alternative, so a home office or workshop full of gear deserves a different unit from the garage.
• Do not trust the gauge alone: NFPA’s monthly inspection checks the gauge and separately checks that the extinguisher is full by lifting or weighing it, and USFA notes that some extinguishers need to be shaken monthly, so read your manual and do both.
• Buy for reach, not for one heroic unit: NFPA 10 caps travel distance to a Class A extinguisher at 75 feet in regulated buildings and NFPA’s home advice is to install near an exit, which usually means more than one extinguisher rather than a bigger one.

Our final take

Buy the Amerex B402 if you want the most documented, most serviceable unit here and are willing to have it maintained. Buy the First Alert PRO5 if you would rather spread the same 3-A:40-B:C rating across the kitchen, the garage and the upstairs landing, which is usually the better fire outcome anyway. Keep an Element E50 in the car if the packaging problem is real for you, but keep it alongside a UL listed extinguisher, not instead of one, because Element itself positions it for supplementary risks. And treat the cheap disposable as what it is: a sealed box nobody will ever inspect, at the bottom of the rating scale, from the design family behind a recall of about 37.8 million US units. The gauge being green is not a promise.

Deciding between the top two? See our head-to-head: Amerex B402 5 lb ABC Dry Chemical Extinguisher vs First Alert PRO5 Heavy Duty Plus Rechargeable Fire Extinguisher (FE3A40GR).

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