Why the beer is coming out warm
The beer is coming out warm. Can you look at it?
Published 12/10/2026. Written by the Pristine Cooling team, Kalgoorlie.
Warm beer is rarely one fault. A beer system is a cold chain with about six links in it, running from the keg room to the tap. The beer only arrives cold if every link holds. Somewhere along that chain one of them has let go. The useful part is that the links fail in fairly predictable ways, so it is worth knowing what they are before somebody starts pulling the font apart.
What is actually behind the wall
Most people have never seen past the tap, which is reasonable. Behind it there is more going on than a fridge.
The keg room is a cool room, holding kegs at temperature. A chiller sits somewhere nearby, usually a bath of glycol or an ice bank, which is what produces the cold. Then there is the python, which is the insulated bundle that runs from the cellar to the bar. Inside it the beer lines are wrapped alongside coolant lines carrying chilled glycol up to the font and back.
That python is the part people do not know exists. It is also the part that quietly ruins more beer than anything else.
Where the cold comes from
The beer does not stay cold because it started cold. It stays cold because the coolant running beside it the whole way keeps taking heat out of it.
Pull a pint and that beer has travelled through metres of line inside a warm building. Without the coolant running the length of the python, it would arrive at room temperature regardless of how cold the keg room is.
The six places the chain breaks
The keg room is too warm. The beer starts behind and never catches up. This one is simple to check and often the answer.
The chiller is not holding. A glycol bath that has lost charge cannot produce the cold the rest of the system assumes. Neither can an ice bank that is not building ice.
The coolant is not circulating. A failed pump, an air lock, a closed valve. The chiller can be perfectly cold while nothing is actually moving that cold up to the bar.
The python insulation is damaged. Pythons get crushed, kinked, nibbled or rerouted during a fitout. Any gap in the insulation is a place where heat gets in all day long.
The run is too long or badly routed. A python through a hot ceiling space is fighting the building the whole way. A shorter cooler route would have cost nothing at install and a great deal afterwards.
The font is not cooled. Some fonts are chilled, some are not. On a system where it matters, a font that has stopped being cooled shows up immediately in the first pour.
The first pour problem
Here is the one that confuses venues most.
On a quiet afternoon the first pour comes out warm, then the next three are fine. Nothing is broken. The beer sitting in the last stretch of line and in the font has been there a while, slowly picking up heat from the room.
A busy bar never notices it because the line never sits still. A quiet one notices it constantly. If warm first pours are the whole complaint, the fix is usually about font cooling or the last metre of the run rather than about the chiller.
Warm beer and foamy beer get mixed up
They are not the same problem, though they look alike across the bar.
Foam is usually about gas pressure, line balance or line cleanliness. Those are dispense matters rather than refrigeration ones. The reason they get confused is that warmer beer releases carbon dioxide more readily, so a temperature fault turns up looking like a pouring fault.
Which means a system can be gassed perfectly and still pour badly if the cold chain has gone. A cold system can pour badly for reasons that have nothing to do with us. Worth working out which one it is before anybody adjusts anything.
The Goldfields version of the problem
Every chiller and every keg room rejects heat somewhere. Usually that somewhere is a cellar or a back of house area that is not air conditioned.
In February that space is already hot. Plant that has to shed heat into hot air starts running out of margin. It is the same argument that applies to every other condenser in town, which is covered in rated for 35 degrees, working at 45.
So a beer system that coped fine in September can start slipping in February without anything having actually failed. The weather simply took the last of its headroom.
What is ours and what is not
The cold chain is ours. Keg room, chiller, coolant circulation, python, anything that is supposed to be producing or carrying cold.
Line cleaning is the venue's cycle. Gas, pressure and line balance are dispense matters. Those affect the pour and nobody should be charging you refrigeration rates to adjust them.
If the beer is warm rather than badly poured, that is worth a look. More on the service side is on commercial refrigeration. A system that has stopped entirely on a Saturday night is what 24/7 breakdown and repairs is for.
Ring us and we'll tell you when we can be there
Same number either way. Ring it if something is down right now or if you want a quote, a service or a maintenance contract set up.