Fire Extinguisher Inspection Cost by Extinguisher Type
Extinguisher type is the single biggest reason two businesses with the same number of units get very different quotes. Here's the typical per-unit range for inspection, recharge, and replacement, by type.
| Type | Inspection | Recharge | Replacement |
|---|---|---|---|
| Water / Foam (Class A) Least specialized to service; common in offices and retail. |
$5–$15 | $20–$60 | $40–$100 |
| ABC Dry Chemical The most common commercial extinguisher; parts and agent are widely stocked. |
$5–$15 | $20–$60 | $40–$120 |
| CO2 Specialized handling for the pressurized gas raises labor cost. |
$8–$18 | $30–$70 | $100–$200 |
| Wet Chemical (Class K) Common in commercial kitchens; recharge price usually includes hydrostatic testing when due. |
$10–$20 | $150–$195 | $150–$300 |
| Clean Agent (Halotron) Used where dry-chemical residue would damage equipment (server rooms, labs). |
$12–$25 | $130+ plus agent | $200–$300 |
Per-unit ranges, national averages. Recharge and replacement figures for wet-chemical and clean-agent units typically include specialized agent and, for wet chemical, hydrostatic testing when due — which is why those two run higher than ABC or water/foam.
Why the type matters this much
Every extinguisher type uses a different suppressant agent, and that agent drives almost all of the cost difference. Water/foam and ABC dry-chemical units use common, cheaply-stocked agents and standard equipment, so they're the cheapest to inspect, recharge, and replace. CO2 needs specialized high-pressure handling. Wet-chemical (Class K) units, required in most commercial kitchens, carry a shorter 5-year hydrostatic test interval because the agent is corrosive to the cylinder — and recharge service on these units typically bundles that test. Clean-agent (Halotron) units are used specifically where a dry-chemical residue would damage sensitive equipment, like server rooms or labs, and both the agent and the equipment to service it are specialized, which shows up directly in the price.
FAQ
Which extinguisher type is cheapest to maintain?
Water/foam and standard ABC dry-chemical units are the cheapest to inspect, recharge, and replace — the agent and parts are common and technicians don't need specialized equipment.
Why is Class K service so much more expensive?
Wet-chemical Class K units are required in most commercial kitchens, and their recharge service typically bundles a hydrostatic test (the wet-chemical agent is corrosive to the cylinder, so it carries a shorter 5-year test interval than dry-chemical units).
How often does each type need a hydrostatic test?
Most stored-pressure dry-chemical extinguishers are tested every 12 years (with an internal exam at the 6-year mark). CO2 and wet-chemical units are tested every 5 years because of their pressure and the corrosiveness of the agent, respectively.
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