How many cylinders do we actually have?
The wholesaler's statement says you are renting a number of cylinders. The store has fewer. The vans have some, and a couple are thought to be on a site where an install finished weeks ago. Two recovery cylinders are full and need to go back, with the paperwork for what is in them. An engineer says he used half a cylinder on a job last week, but the job sheet does not say which system, and the rental charges keep ticking.
Cylinders move faster than the paperwork
Each cylinder has a life: collected from the wholesaler, stored, loaded on a van, used across several jobs, returned, or filled with recovered gas and sent for disposal or reclamation. Each movement matters for rental, stock, the F-gas records of every system it touched and waste paperwork. Most businesses record the collection and the return, and nothing between.
- Cylinder serials are not recorded on job sheets.
- Quantities used are estimated, not weighed and noted.
- Recovered gas is not linked to the system it came from.
- Rental charges are paid without checking which cylinders are still needed.
- Nobody knows which van holds which cylinder.
What loose cylinders cost
Rental on cylinders you have forgotten about. Refrigerant bought twice because the half-full cylinder could not be found. System records missing the quantity or cylinder reference. Recovered gas returned without clear paperwork. And a time-consuming reconciliation whenever the wholesaler's list and yours disagree.
Engineers feel it too. A job that needs a particular refrigerant stalls while someone works out which van has a suitable cylinder, and a half-used cylinder returned to the store is sometimes treated as full on the next job, which is found out on a roof.
Cylinder tracking we set up
- Every cylinder gets a record from its barcode or serial: gas type, virgin or recovery, owner, rental start, location.
- Moves between store, van and site are scanned in the engineer's app, taking seconds.
- On a job, the engineer records the cylinder used and the quantity added or recovered against the specific system, feeding its F-gas record.
- Recovery cylinders build up a list of what went into them, from which systems, ready for the return paperwork your process requires.
- Rental cylinders are checked monthly against the wholesaler's statement, and cylinders idle for longer than you set are flagged for return.
- Stock views show gas on hand by type and location, so an engineer can find the nearest suitable cylinder.
| Question | Answered now | Answered with tracking |
|---|---|---|
| Where is this cylinder? | Ask around | Last scan location |
| Which system did the gas go into? | Job sheet, maybe | Recorded per system |
| What is in this recovery cylinder? | Best guess | List of recoveries |
| Are we paying rent on idle cylinders? | Unknown | Idle cylinders flagged |
| How much of each gas do we hold? | Count the store | Live by type and location |
Handling, labelling and disposal rules are for your certified engineers and waste carriers. The tracking records what they do.
Cylinders that are always accounted for
The wholesaler's statement is reconciled in minutes. Rental stops on cylinders you do not need. Every system's record shows how much gas it received and from which cylinder. Recovery returns go with a clear list. And engineers stop driving to the store for gas that is sitting in a colleague's van.
Your F-gas records for each system also gain the detail that is hardest to reconstruct afterwards: which cylinder the gas came from and how much went in.
Is this happening to you?
- Your cylinder count never matches the wholesaler's.
- Job sheets do not record cylinder references.
- You pay rent on cylinders nobody can locate.
- Recovered gas is returned without a clear list of sources.
- Engineers buy gas while part-used cylinders sit elsewhere.