Free co2 refills in colorado (near denver)?

Question

k i need help finding some free co2 refills in colorado that are no more than 5 miles from longmont colorado

Answer 1

not to be negative, but i can almost guarantee you that you won't be able to find free CO2 refills.  It shouldn't cost very much to get a tank refilled, but i've never heard of it being free.

but a local welding shop or other such place will refill for you, just not for free.