For a residential kitchen, the best choice is a Class B:C fire extinguisher, or a multipurpose Class A:B:C extinguisher, rated specifically for flammable liquids (grease/oil) and electrical fires.
The best fire extinguisher for a home kitchen is an ABC-rated or B:C-rated extinguisher, such as the Kidde FA110 Fire Extinguisher. For commercial kitchens or heavy home frying, a Class K wet chemical extinguisher is the required standard.
For a home kitchen, the safest and most recommended fire extinguisher is a Class B:C extinguisher (specifically one rated 711A for residential cooking). Alternatively, a multipurpose Class ABC extinguisher works, while commercial kitchens require a Class K wet chemical extinguisher.
A Class K fire extinguisher is an essential safety device in any kitchen that uses cooking oils and fats. Understanding what it is, what it's used for, and who needs one can make all the difference in an emergency.
Class B Fire Extinguishers
Best Use: Can be used in kitchens, especially where flammable liquids are stored or used, but not ideal for cooking oil fires.
Fires are classified into categories based on the type of fuel they burn, which determines the most effective and safe extinguishing agent to use.
While these are technically flammable liquids, Class “B” extinguishers are not suitable to address the special kinds of hazards found in commercial kitchens. Class “K” fire extinguishers use chemical agents that react with hot oils or grease to turn it into a non-flammable soap-like substance.
Kitchen fire extinguishers (often Class K or B:C) are formulated to suppress grease and oil fires without splashing burning liquid. Regular extinguishers (usually Class A:B:C) are multipurpose devices that handle wood, paper, and electrical fires, but their stronger spray can scatter hazardous grease.
Class F fires (cooking fires) – Where oils and fats are burning at high temperatures, a CO2 extinguisher would only risk spreading the liquid and the fire. Instead, you need a wet chemical fire extinguisher to create a cooling layer on the top of the liquid which will then extinguish the flames.
Purple K is commonly used in high-risk areas such as: oil refineries, airport ramps, service stations, military facilities, naval warships, power plants, and other places where flammable liquids are handled. It is the most effective dry chemical in fighting class B (flammable liquid) or Class C (electrical) fires.
For a residential kitchen, the ideal fire extinguisher is a 2.5 to 5-pound model with a Class B:C or Class ABC rating. This size is lightweight enough for quick, one-handed operation while carrying enough capacity to smother sudden grease or electrical fires.
Every home kitchen should have a fire extinguisher, fire blanket and smoke alarm. These items are the basics to ensure you can handle a small fire before it spreads. For cooking with oil, having a wet chemical fire extinguisher is recommended.
The four most common types of portable fire extinguishers are Water, Foam, Dry Chemical, and Carbon Dioxide (CO2). Each is designed to extinguish specific classes of fires (Class A, B, C, D, or K) by either cooling the fire, starving it of oxygen, or breaking the chemical reaction.
For a home kitchen, the safest and most recommended fire extinguisher is a Class B:C extinguisher (specifically one rated 711A for residential cooking). Alternatively, a multipurpose Class ABC extinguisher works, while commercial kitchens require a Class K wet chemical extinguisher.
The First Alert Heavy Duty Fire Extinguisher (typically models like the PRO5 or HOME2PRO) is a rechargeable, all-metal extinguisher. UL-rated for Class A, B, and C fires, it effectively combats wood, paper, fabric, flammable liquids, and live electrical fires. It is ideal for homes, garages, and workshops.
Silver class K fire extinguishers are meant exclusively to handle kitchen grease fires. They utilize a foam-forming agent that prevents persistent kitchen fires from reigniting.
A CO2cap C cap O sub 2𝐶𝑂2 fire extinguisher should never be used on Class A fires (wood, paper, cloth), Class K fires (cooking oils and grease), or Class D fires (flammable metals). Because they displace oxygen rather than cool the fuel, these extinguishers pose severe reignition, spreading, and asphyxiation risks.
The best fire extinguisher for a home kitchen is an ABC-rated or B:C-rated extinguisher, such as the Kidde FA110 Fire Extinguisher. For commercial kitchens or heavy home frying, a Class K wet chemical extinguisher is the required standard.
An ABC fire extinguisher uses a dry powder to extinguish solid materials, flammable liquids, and electrical fires. A CO2 extinguisher uses carbon dioxide gas to displace oxygen and is specifically designed for flammable liquids and electrical hazards.
Choose a 5 lb extinguisher for homes and small spaces, or a 10 lb extinguisher for commercial buildings, garages, and large areas. The best choice depends on your space and who will be using it.
However, it is important to know that Class ABC fire extinguishers are not suitable for commercial kitchens. For commercial kitchens, you need Class K fire extinguishers. Continue reading to learn: Why Class ABC fire extinguishers do not work for cooking fires.
Different extinguishers are recommended for residential and commercial kitchens. The Class ABC extinguisher remediates home kitchen fires. However, commercial kitchens need to be protected with a Class K extinguisher.
Class K extinguishers are filled with an agent designed to prevent burning grease from splattering and spreading. These types of fire extinguishers are the ones most often found in home kitchens. Since most kitchen fires are small and in a tight area, Class K fire extinguishers use a high-volume, low-velocity spray.
A 3A fire extinguisher is mathematically and practically "better" than a 2A extinguisher because it handles a larger Class A fire (solid combustibles). However, the best choice depends on your space and your ability to comfortably lift and maneuver the heavier weight of a 3A unit.
PFAS and Use in Foam Fire Extinguishers