Match the thread type exactly
CO2 capsules across brands are not universally threaded — check the regulator’s specification against the capsule’s stated thread type before ordering, since a physical fit doesn’t always guarantee correct pressure delivery.
Small capsules for occasional use, large cylinders for volume
Small threaded capsules suit compact dispensers or infrequent use; a large refillable cylinder makes more sense for a kegerator running through real volume regularly, once the higher upfront cost is weighed against buying capsule sets repeatedly.
Store cartridges safely
CO2 cartridges are pressurized — store them away from heat sources and handle them per the manufacturer’s own guidance, never improvised.
Plan refills or exchanges in advance for large cylinders
A large cylinder needs a local gas supplier for refilling or exchange once empty — worth confirming that option exists locally before relying on a large-format cylinder as the only CO2 source.
What we would not do
Buy CO2 capsules based on price alone without checking thread compatibility first. A cheap capsule that doesn’t seal properly against the regulator isn’t actually cheaper once a failed pour or a slow leak is accounted for.
What readers ask us
Are all threaded CO2 capsules interchangeable across brands?
The thread standard matters more than the brand — a capsule with a matching thread type will generally fit regardless of manufacturer, but always check compatibility against the specific regulator being used rather than assuming.
How do I calculate how many capsules I'll need?
Compare total gas volume across formats — a set of small 16g (0.6 oz) capsules holds far less total CO2 than a large refillable cylinder, so calculate based on expected pours per keg and the household's typical usage rather than just the per-unit price.
Last reviewed 25 August 2026