Start with the date stamped on the cylinder
Every extinguisher that has passed a hydrostatic test carries a record of it. Look for a label or stamp. That date sets your next deadline.
- Dry chemical units: hydro test every 12 years.
- CO2, water and wet chemical (Class K) units: hydro test every 5 years.
Stored-pressure dry chemical units also get a 6-year internal maintenance, a full teardown that falls between hydro tests. The yearly tag is different. A unit can have a fresh annual tag and still be years past its hydro date, because annual maintenance doesn't include a pressure test of the cylinder.
What the test involves
First the unit is emptied. The technician removes the valve and looks over the cylinder inside and out for corrosion, dents, thread damage or other defects; a shell that fails this visual exam doesn't go on to pressure. Then it's filled with water. The cylinder is brought up to its test pressure and held there while the technician watches for leaks, bulging or any distortion of the shell.
Pass or fail. A unit that passes is dried, recharged and labeled with the new test date. One that fails is taken out of service and can't be refilled.
On site or at the shop?
That depends on how many units you have and what types they are. Hydro testing uses equipment that usually stays in a shop, so cylinders are often taken away and brought back after testing. When we quote the job, the technician will explain the plan: which units leave, how long they're gone and what to do about coverage while they're out.
Placentia's fire department and your tags
Placentia has had its own fire department since July 1, 2020, when the Placentia Fire and Life Safety Department took over from the Orange County Fire Authority. Firefighters inspect low-hazard businesses through the Engine Company Inspection Program. Fire prevention specialists handle commercial occupancies and large residential buildings, and they check fire protection systems, exits and fire lanes. Any inspector can read an extinguisher tag or a hydro label in seconds. An expired date is easy to spot.
The city's fire code is the 2025 California Fire Code with local amendments, adopted as the Placentia Fire Code; Section 906 of the state code covers portable extinguishers. If you're unsure what your inspector expects, ask the Placentia Fire and Life Safety Department.
Who does the work and how to book
In California, extinguisher service has to be done by a firm and technician licensed by the State Fire Marshal under Title 19. Our California work is performed by Hedrick Fire Protection, which holds C-16 and C-10 contractor licenses and is State Fire Marshal licensed under Title 19 for extinguisher service and for inspection, testing and maintenance of water-based systems.
Have a count ready. Note the types and the label dates, if you can read them. Then call us at (949) 558-2201 or email us at socal@1profire.com with the list, and we'll quote the job.
Before you book a hydro test
Our extinguishers were last serviced around 2008. Do they need a hydrostatic test?
Almost certainly. Annual service isn't a hydro test, so the last hydro stamp may be older than 2008, and even a dry chemical unit tested that year would have been due by 2020. A technician will read the labels and tell you which units need testing.
Is it cheaper to buy new or refurbished extinguishers instead?
Sometimes. It depends on the unit type and its condition. Ask for both prices when you call.
Does the boss need to be present?
No. Someone just has to let the technician reach every unit and answer questions about the site.
Who handles fire inspections in Placentia?
The Placentia Fire and Life Safety Department.