RedRock Gallo Drain Gun- with 5 Unthreaded CO2 Cartridges for A/C Condensate Line - Air Conditioner Cleaner Blaster Opener Kit with Five Cartridge Clears HVAC Clogs

This thing worked when nothing else did! It's especially useful if you have pipes that are at too great an angle to allow for a good brush out - or snake out...or the clog is too far down the pipe. What worked for me: Make sure to get a solid seal and give at least 1 good blast from the bottom - and fully cover the top of the pip to catch anything that blows out. It should work in one blast (but you can try two). Once the clog is blown out, then disinfect the pipe with vinegar solution - and vacuum out from below and above. You'll be good to go!

I was nervous to use this since many reviews mentioned it did not work. I’m glad I did try this because it cleared my clog within minutes. I had a bad clog, so I used 3 of the CO2 canisters. It was easy to use and I’m glad I’ll have it on hand the next time the line backs up. It saved me a high priced AC tech visit!

Item is terrible. Black tube doesn't match co2 cylinder length so leaks out before screwing all the way in. Hose fitting leaks and button wont reset. Also you cant return item using Amazon returns so prepare to be out the cost for this garbage.

I used this to clear my condensate line -- I used 4/5 cartridges before it finally cleared.... try going one way then if that doesn't work try the other end. I put shop vac on one side and this on the other and it finally blew a whole lot of god only knows what out the other end. I started at the top with the shop vac at the bottom 3 cartridges and nothing then I reversed it - shop vac on top and this airgun on bottom and it cleared in a few seconds saved me an expensive AC call. dont forget to plug anywhere else the air might come out, vents etc.

This did not work for me but would probably work for a minor clog. This AC condensation line was in such an awkward place and too small for a regular snake I ended up having to cut a section of pipe with the clog out altogether and replace it. This clog was thick and hard. So I don't think this gadget stood a chance.

Ac tech wanted 150.00 to clear my A/c drain line. went on amazon and found this! Prayers answered it worked! I used all co2 cartridges but got the job done!

It is difficult to penetrate the metal seal and when it is penetrated sometimes the o'ring seal does not fully seal.

Not sure why this is only 4 stars. It should be 5+ Easy to use. Instructions are clear and it WORKS. Recommended to use 1 cartridge. I used 2 just in case. The amount of GUNK that was at the outside end. gross and satisfying. Awesome and worth the money!