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Choosing the right CO2 cartridge brand for A/C drain line cleaning tools isn’t just about fitting the gun—it’s about trust, pressure control, and safety. As a professional manufacturer of CO2 cartridges with a dedicated factory in China, I’ve worked with clients across HVAC service chains, tool brands, and private labels. We know the real-world performance standards technicians expect. In this list, I’m sharing the most recognized cartridge brands compatible with air-powered drain guns—especially models like the Gallo Gun and Swoosh Gun. Whether you’re sourcing for resale, private branding, or bulk field use, here are the names you should know.
1. Alizeemetal
Location: China
Company Type: CO2 cartridge manufacturer & exporter
Founded: 2010s
Number of Employees: 100–200
Main Products: Threaded CO2 cartridges (8g–88g)
Other Products: Soda tanks, kegerator cylinders, airsoft cartridges
Dive Deeper:
We specialize in threaded CO2 cartridges that match most drain gun models, including both domestic and export versions of the Gallo Gun and Swoosh systems. Our production follows strict quality control and triple leak testing, ensuring pressure consistency and shell integrity. Clients choose us not only for price advantage but because we support OEM branding, batch color customization, and export-ready packaging. For HVAC wholesalers, maintenance service providers, or brand owners, we deliver factory-direct reliability—especially when local sourcing can’t keep up.
2. Nu-Calgon
Location: United States
Company Type: HVAC chemical and tool manufacturer
Founded: 1947
Number of Employees: Approx. 200
Main Products: Gallo Gun®, Mag Cartridges
Other Products: Coil cleaners, leak detectors, flushing kits
Dive Deeper:
Nu-Calgon is the name behind the Gallo Gun—perhaps the most iconic CO2 drain cleaning system in the HVAC world. Their Mag Cartridges are single-use, unthreaded 16g CO2 units designed for quick firing through the Gallo Gun’s barrel. The system is widely adopted by HVAC techs in North America for unclogging condensate lines with a safe, compressed air burst. Each cartridge is pre-measured for maximum force with minimal tool wear, making it a trusted option for daily use.
3. DiversiTech / Swoosh
Location: United States
Company Type: HVAC accessories and tools brand
Founded: 1971
Number of Employees: 500+
Main Products: Swoosh Drain Gun, 16g/20g CO2 cartridges
Other Products: HVAC pads, brackets, pumps, components
Dive Deeper:
Swoosh is DiversiTech’s dedicated drain line cleaning system. Their CO2 cartridges—available in both 16g and 20g—are compatible with the Swoosh gun and include options for threaded and non-threaded formats. These cartridges are optimized for controlled discharge pressure, essential for dislodging mineral blockages or algae in HVAC drain tubes. DiversiTech is known for wide aftermarket support, so many HVAC distributors stock these for on-demand field use.
4. Kleer Drain
Location: United States
Company Type: Plumbing and drain tool brand
Founded: Estimated 2000s
Number of Employees: Likely under 50
Main Products: Kleer Drain Opener, CO2 cartridges/disks
Other Products: Basic plumbing unblocker kits
Dive Deeper:
While not a traditional HVAC brand, Kleer Drain offers a similar air burst mechanism in its home-use drain openers. The CO2 cartridges they supply are typically unthreaded and integrated into single-use disks. Although designed for sink and toilet clogs, their technology overlaps with low-pressure drain gun systems. This makes them a secondary option for budget maintenance tools or home technician kits.
5. BOLDOX
Location: Likely China (globally distributed)
Company Type: E-commerce OEM brand
Founded: Active since ~2021
Number of Employees: Not publicly listed
Main Products: Drain Gun kit + CO2 cartridges
Other Products: —
Dive Deeper:
BOLDOX-branded drain gun kits are commonly found on platforms like Walmart and Temu. Each kit includes a drain gun tool and multiple threaded 16g CO2 cartridges. The packaging—marked by its yellow dog logo—is designed for DIY and small-business maintenance users. The gun design is a Gallo Gun replica, and the cartridges use a threaded neck for tool compatibility. While BOLDOX may not have a formal brand presence, its product quality and reviews make it a decent option in the non-professional market.
6. RED ROCK
Location: Unknown (likely US importer)
Company Type: Private-label brand
Founded: Not officially listed
Number of Employees: Not available
Main Products: 16g unthreaded CO2 cartridges
Other Products: —
Dive Deeper:
Despite sharing a name with several HVAC service companies, this RED ROCK refers specifically to its labeled A/C drain gun CO2 cartridges. Sold in bulk packs, the cartridges are 16g unthreaded and clearly marked for use with drain cleaning guns. Their compatibility with Gallo Gun-type systems suggests OEM sourcing from known cartridge manufacturers. While the brand lacks a standalone identity, it fills a niche for resellers looking to supply generic cartridges under a consistent label.
7. LD Leland
Location: Possibly Asia
Company Type: Factory-level OEM / brand label
Founded: Not verified
Number of Employees: Not available
Main Products: CO2 cartridges + drain gun sets
Other Products: Possibly soda, airsoft, or air tools
Dive Deeper:
LD Leland appears on gun handles and packaging as “LD” with “Leland” font below—possibly aiming to align with the U.S. Leland brand recognition. However, no direct connection to Leland Gas Technologies has been confirmed. The drain gun resembles Gallo Gun in shape, paired with standard threaded 16g CO2 cartridges. Most units are sold via Alibaba-type platforms or regional resellers. Their real value lies in affordability, not brand heritage.
8. Homiom
Location: Unknown
Company Type: Online retail-only brand
Founded: Post-2020 (estimated)
Number of Employees: Not available
Main Products: Drain Gun kits + CO2 cartridges
Other Products: —
Dive Deeper:
Homiom offers drain line clearing kits that include a gun and multiple CO2 cartridges, aimed squarely at e-commerce buyers. Their packaging often highlights “AC Drain Line Cleaner Tool” for HVAC clogs. The included cartridges are usually 16g threaded, suitable for most generic gun types. The brand lacks a formal web presence or distributor network, so buyers should treat it as a budget option with limited support.
🧠 Conclusion: Choose Smart—Not Just Compatible
CO2 cartridges used in A/C drain cleaning tools may look the same—but internal pressure stability, valve compatibility, and gas purity vary greatly across brands. If you’re sourcing for retail, private label, or regular technician use, always verify cartridge threading type and burst pressure capacity.
As a factory ourselves, we’ve helped global HVAC brands design, customize, and supply CO2 cartridges that meet both U.S. and EU safety expectations. If you’re building a drain tool brand or looking to bulk-purchase CO2 cartridges, feel free to reach out—we’re ready to support with stable supply, OEM packaging, and precision quality.
