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 drain gun works incredibly well! It cleared a stubborn HVAC clog in seconds. Very easy to use, and the included cartridges are a great bonus. A must-have tool for any HVAC tech or DIYer!

Worked as described. There is no way this will burst a drain pipe. It does however have enough pressure to unclog most clogs. I poured bleach and white vinegar down the pipe, then used this to blow the small clog out the pipe. Had to use a couple CO2 canisters, but well worth the price over an HVAC tech!

It worked beautifully the first time. The rest of the cartridges leaked until they were empty. I followed the instructions just as I did the first time it worked, but the buttoned jammed.

Excellent product. Easy to use and worked as intended.

It worked well, even though the rubber cone-shaped nozzle was a tiny bit small for our drainpipe fitting, The instructions were very brief (with no diagrams) but with careful study we figured out what to do. We only needed one cylinder to clear the line, using repeated "squirts" of compressed air. A lot of white gunk came out, after which we poured about a half-gallon of water through the line for good measure.

I've tried nearly every device on the market, and this one stands far above the rest. Unlike the flimsy plastic versions that constantly break and struggle to puncture the CO2 cartridge, this model is built entirely from durable metal and pierces the cartridge effortlessly. For simple clogs, there's no question—this is the product to choose. Don’t be misled by cheaper plastic alternatives—they just don’t work.

Why did you pick this product vs others?:Product is well priced and I had good luck with it clearing my condensate drain line. Looking ahead, I am having a horrible time ordering the correct refill cartridges for this device, and Red Rock is less than helpful in recommending a working CO2 cartridge solution. I've been sent around to multiple people in the company, only to finally be told that I need to call in for the proper reference cartridge. Bogus. Make ordering refills easier!! Buyer beware. This gun will NOT accept threaded cartridges. You need a 16oz, non threaded cartridge, and it needs a long neck or will NOT work. While I'm happy it worked, it took 3 of my 5 cartridges to do so. If nothing else, I plne to just use the hose and rubber stopper to hook it up to my air compressor in the future and just throw this away when I run through the other two cartridges. Also, FYI - if you order the wrong cartridges, they are NOT returnable!!

Work exactly as intended the amount of air don’t last too long, but it gets the job done if you just need to remove a simple clog.