Start with Our Best-Value Extinguishers – From Water to CO₂
Whether you need protection for your home, vehicle, office, or warehouse, this page breaks down the most affordable and compliant fire extinguishers across all major types—water, CO2, foam, dry powder, and wet chemical.
Fire extinguisher prices vary depending on the size, fire class rating, and usage environment, so we’ve listed entry-level models to help you get started.
All extinguishers listed meet UK safety standards and are suitable for common fire risks. Browse our top picks below or click through to view the full range
£27.95
£32.95
£34.95
DRY POWDER
£33.95
£53.95
WET CHEMICAL
£43.95
£38.95
SPECIALIST
When selecting the right fire extinguisher, it’s crucial to understand the different types, their ratings, and what specific fire risks they address. This guide covers the most common types of fire extinguishers available, helping you make an informed decision for your needs, whether at home, in the office, or in industrial settings.
| Type | Common Sizes | Fire Classes Covered | Best For | Typical Applications |
|---|---|---|---|---|
| Water | 6L, 9L | Class A | Paper, wood, fabrics | Offices, schools, retail stores |
| Foam (AFFF) | 6L, 9L | Class A & B | Offices, homes, flammable liquids | Reception areas, warehouses, fuel storage |
| CO₂ | 2kg, 5kg | Electrical & Class B | IT rooms, electrical panels | Server rooms, 3-phase distribution boards |
| Dry Powder | 1kg – 9kg (6kg standard) | Class A, B, C & Electrical | Vehicles, workshops, general use | Garages, plant rooms, construction sites — must be risk-assessed for any indoor use |
| Wet Chemical | 3L, 6L | Class F (also A) | Kitchens, deep fat fryers | Commercial kitchens, restaurants |
| Firexo | 500ml – 9L+ | All Fire Classes (A–F) | Homes, vehicles, businesses | Domestic use, caravans, multipurpose use |
A 5kg fire extinguisher typically refers to a CO₂ model, which is used to tackle electrical fires and flammable liquids (Class B and E). While prices vary by brand and supplier, CO₂ extinguishers tend to be more expensive due to the pressurised gas and robust cylinder construction.
A 5kg CO₂ extinguisher is commonly recommended for covering three-phase electrical distribution boards in commercial and industrial environments, where higher electrical loads present increased fire risk.
For general home use, a Foam (AFFF) extinguisher is a good all-round choice, covering solid combustibles and flammable liquids. However, Firexo extinguishers are becoming increasingly popular in households because they cover all common fire classes — including electrical and kitchen fires — in one unit, removing the guesswork.
A 6kg fire extinguisher is typically a Dry Powder model, which is commonly used for Class A, B, C, and Electrical fires. The full weight of a 6kg Dry Powder extinguisher is around 9–10kg. This size offers a high fire rating (e.g., 43A 233B C for our CommanderEDGE units) and is ideal for general-purpose and industrial use. However, Dry Powder extinguishers must be risk-assessed for any indoor use, as the powder can cause contamination or respiratory issues. They are not recommended for use in confined indoor spaces due to the risk of suffocation and reduced visibility during discharge.
For smaller or budget extinguishers, it’s often cheaper and more practical to replace them once discharged, especially if servicing costs and downtime are considered. However, refilling is more cost-effective for larger, commercial-grade extinguishers — particularly those installed in businesses where annual servicing is already scheduled.
No—only CO₂, Dry Powder, and Firexo extinguishers are specifically designed and rated for electrical fires.
Some Water Spray or Water Additive extinguishers are tested to a 35kV dielectric rating, meaning they’re safe if accidentally sprayed onto live electrical equipment from a distance. However, they are not intended for use as a primary method of tackling electrical fires, and we do not recommend them for that purpose.
It’s not legally required, but it’s strongly recommended—especially in kitchens, garages, or homes with open flames or electrical appliances.
Yes—Firexo units are CE-marked and suitable for domestic and commercial use. As with any extinguisher, ensure it carries the right certification and fire rating for your environment.
Most fire extinguishers last 5–10 years and should be serviced annually in commercial settings. Always check the manufacturer’s recommendations and expiry date.
Yes, 6kg fire extinguishers are almost always Dry Powder units, offering a broad range of fire ratings (Class A, B, C, and Electrical). For example, our CommanderEDGE 6kg Dry Powder extinguishers have ratings of 43A 233B C, making them suitable for general-purpose use in vehicles, workshops, and industrial environments.
However, Dry Powder extinguishers must be risk-assessed for any indoor use, as the powder can cause respiratory issues and visibility problems in confined or enclosed spaces. They are generally not recommended for indoor use unless there is a clear, risk-assessed need, and adequate ventilation or protective measures are in place.
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Choosing the right fire extinguishers for your premises isn’t just about safety — it’s also a smart way to save money. By matching extinguisher types and sizes to your actual fire risks, you can avoid overspending and unnecessary duplication.
Opt for extinguishers that cover more than one fire class:
Bigger isn’t always better. For example:
A 3L Wet Chemical extinguisher with a 75F rating is suitable for deep fat fryers with up to 75 litres of oil — perfect for small kitchens. There’s no need to over-specify with a larger unit if the risk doesn’t require it.
For compact spaces or mixed fire risks (e.g., in food trucks, home kitchens, or workshops), using a single all-risk extinguisher like Firexo can be more economical than buying multiple units for each class:
A fire risk assessment helps identify exactly which extinguishers are required — and equally important, which ones aren’t. Avoiding unnecessary equipment is one of the most effective ways to control fire safety costs.
Tip: Not sure where to start? Speak to your fire safety provider or responsible person for advice tailored to your premises.
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