Poppin' in to give this thread a bump because it has gotten me reading about extinguishers for a couple days. I will be purchasing some new ones here shortly.
I've had a 2.5 lb First Alert in my Jeep for years. Have never touched it. I checked it out yesterday; still charged and powder still moves inside of it. The 2.5 lb in the kitchen of my apartment, however, appears to be caked solid. Lord knows how long its been hanging there.
I'm looking at picking up some Amerex's. Likely a 5 lb and 10 lb ABC. I really want to go Halotron or C02 in the Jeep (would also keep the ABC), but the price/rating steers me away. Here is a summary of the rating/prices I've been looking at:
B456 -- 10 lb ABC, --- 4A:80B:C, ~$65
B402 --- 5 lb ABC, --- 3A:40B:C, ~$60
B500 --- 5 lb ABC, --- 2A:10B:C, ~$50
B417 - 2.5 lb ABC, --- 1A:10B:C, ~$40
322 ---- 5 lb C02, --------- 5B:C, ~$170
B386 --- 5 lb Halotron, ---- 5B:C, ~$205
B355 --- 5 lb Halon 1211, 10B:C, ~$500
For the price/fire suppression capability, I'm having a hard time justifying C02 or a clean chemical. If this was a restored collectible vehicle I would be more inclined to go with something less corrosive than dry chemical, but for a Jeep I think ABC is the correct choice.
Other topic: I also am interested in picking up a water can for the garage. I do a fair amount of welding/grinding, and I do not have running water out there. I would like something that I can easily deploy that is less aggressive than a dry chemical extinguisher. The only common size I see for water extinguishers is 2.5 gal. Amerex does have a 1.75 gal "mist" option, as well as 6 L (~1.58 gal) options that are class K.
Here is what I'm seeing for water can options:
240 ---- 2.5 gal water, ----- 2A, -- ~$110 - 55 second spray, ~50 ft stream
B270 - 1.75 gal water mist, 2A:C, ~$155
B272 -- 2.5 gal water mist, 2A:C, ~$250
I'm inclined to go with the B270 for its lower price, smaller size, and less aggressive spray than the 240. I'm picturing a situation where my trash barrel or roll of shop towels goes up from grinding sparks or weld spatter. I don't want a powerful stream that could blast a burning object across my small garage. I need something to control small nuisance fires. If I am in a situation where the nuisance fire has escalated to more than a nuisance, I will be reaching for the 10 lb ABC next to the exit.
Are there any other options I am seeing for water cans that are less substantial than these units? Something more than the spritz bottle of water that I currently use and less than the B270.