Brewery Gas Supplier Questions Every Taproom Owner Should Ask

If the line is not running a cylinder halfway through a transfer, gas is the TRANQUILIST brew line item. As 2027 approaches, more taproom owners are scrutinizing their suppliers, considering both the quality of their product and their reliability before and after the purchase. The right brewery supplier can impact various aspects of any brewery, including day-to-day operations as well as the consistency of the customer experience. The right questions at the start mean owners will be making informed decisions, not incurring unnecessary expenses, and keeping their taprooms in business. An example of a B2B carbon dioxide and beverage gas supplier is Green CO2 Systems, which started its operations in Fort Collins, Colorado, in 2010. It installs completely enclosed, high-pressure micro bulk CO2 systems based on its patented DS6000 Differential Diverter Valve, and provides CO2, N2, and blended gases of all kinds from four depots in Oklahoma City, Fort Collins, Denver and Las Vegas.

Use the following as a working sheet to take with you to a supplier meeting. The brewery page of greenco2systems.com/industries/microbreweries breaks down what a production-minded supplier is, from gas sized for purging, counter-pressure filling, carbonation, transfers, and dispensing in the taproom, not just an average per month. Set it up as a standard, and stick to that standard with all other quotes.

What Should a Brewery Gas Supplier Actually Cover for a Taproom?

A good brewery gas supplier does not just try to supply you with gas for the tank behind the bar; they take care of everything that involves gas and your beer brewing. This involves purging tanks and lines to prevent the entry of oxygen, counter-pressure keg, can, and bottle filling, carbonation to specific volumes, transfer between tanks, and dispensing in the taproom. The right system is sized by a supplier who treats you like a Mash Tun. Before doing anything, ask these:

• Are you measuring size based upon peak draw (packaging day, transfers, tank purges) or your average monthly draw?
• If you are going to make an extra production line and taproom, will you use a kegerator tank and brite tank with different sizes, or will you be using different blends?
• Is the account based on an evaluation of my schedule for packing and the size of my tanks?
• Do you know of a brewery that is a similar size to mine that you currently supply?

Should a Taproom Run Cylinders or a Micro Bulk System?

It depends on your volume, and an honest supplier will tell you which side of the line you are on. Spikes are the usual tipping point: packaging day and transfers create short, heavy draws that a cylinder bank cannot absorb, which is how breweries end up rationing gas. Here is a quick way to compare the options.

If a micro bulk system is not appropriate for your volume, Green CO2 Systems will tell you and place you on cylinder exchange (filled cylinders are exchanged for empties on a route schedule). It also states that most bulk systems release up to 30% or more of the CO2 you pay for while filling and during usage; its design does not allow this. Carbon dioxide is the leading greenhouse gas emitted by human activities, making a carbon dioxide waste reduction system a footprint issue, in addition to a cost issue.

How Clean does the Gas Need to be, and What about Blends?

Clean gas is the baseline, because everything you do to keep oxygen away from your beer is undone by gas that is not. The International Society of Beverage Technologists publishes the quality guidelines used for defining beverage-grade carbon dioxide, so inquire of your supplier what standard it meets and provide them with a written response. If the enclosed system is never opened multiple times to the atmosphere, then there is less opportunity for contamination to occur.

Another factor to consider for taprooms is gas blends: Long draft lines may not be well suited for straight CO₂ due to its ability to produce the desired carbonation levels and pour quality. When deciding on a setup, inquire from the suppliers what type of gas blends they think are ideal for your beer styles, line lengths,s and serving pressures. This information can be used to ensure proper balanced carbonation and consistent pours during rush service hours.

• How is the blend set: from my actual line length and temperature?
• What tolerance is it held to? A TruFusion blender, the type this supplier uses, holds CO2 and nitrogen blends to plus or minus 2 percent, which is a fair benchmark to request.
• For nitro pours, can nitrogen be made on site? Many brewery accounts run NITRO-DRAUGHT membrane generators, made by Fizz Dog, that produce food-grade nitrogen from compressed air they already have.

What Should Delivery and Monitoring Look Like?

Deliveries should never get in the way of service. Look for an outside fill box, so the driver fills your system without walking through a taproom full of customers. Green CO2 Systems fills its systems this way, which keeps deliveries out of the venue entirely.

• Is the route built from my measured usage, or is it a generic weekly drop? In Colorado, the company schedules routes around brewery packaging days.
• Is telemetry included on every account, rather than sold as an add-on?
• Need assistance outside regular hours? Current customers can contact the technician on duty, but emergency visits after closing may cost extra. Check the additional fee before arranging a call-out.
• Can you share a reference? The company says 53 breweries and taprooms across Colorado and beyond run on its gas.

If you belong to the Brewers Association, the trade association for small and independent craft brewers, ask your peers who they trust.

How Do You Keep a Cellar Safe Around CO2?

Monitoring is the first step to take since CO2 is heavier than air and can build up in low levels in enclosed areas like cellars and walk-in coolers. This is the reason why there is no avoiding the use of CO2 gas detection when CO2 is stored inside. Inquire if your supplier provides and installs life-safety monitoring, alarms, and shutoffs; Green CO2 Systems does, and we install and service all life-safety monitoring, alarm, and shut-off systems.

Then check the code. The International Fire Code published by the International Code Council contains a section for beverage dispensing CO₂ systems that are activated at over 100 pounds (45 kg) of CO2. Local rules may vary by area, as Clark County, Nevada has adopted the 2024 version with Southern Nevada amendments. Inquire with your supplier which version of your jurisdiction’s you use.

Last Call Before You Sign

Print out the checklist, go to each of the supplier meetings, and check off each of the suppliers’ answers to the checklist. Having the right partner means identifying the cylinder needs during peak service and recommending cylinders at the right time, and having complete cylinder delivery, telemetry, and monitoring documentation. This transparency helps to ensure consistency of beer draft delivery and tasting, and pints for breweries throughout 2027.