No air means no shop, no line, no work.
Compressors that will not build pressure, run hot, short cycle or push water down the lines. We repair them where they sit, in shops and plants around Napa and Solano, at whatever hour the air went away.
- Open 24 hours, seven days
- No hourly minimum
- A real number before we roll
- Screw and piston units
Compressed air is the utility nobody notices until it is gone
A body shop cannot spray. A tire shop cannot run guns. A production floor loses every pneumatic actuator, every clamp and half its controls. Compressed air sits in the same category as power and water: invisible while it works, total when it stops. And unlike a machine that is down, there is usually no workaround. You wait for the compressor.
Three things wreck compressors, and they are pressure, heat and water. Pressure faults come from the control side more often than the pump. Heat comes from cooling that has quietly degraded and from asking a unit to run a duty cycle it was never sized for. Water is the one people ignore longest, because the damage lands downstream in tools and product rather than on the compressor itself.
We work on both families: rotary screw units that run for hours at a time, and reciprocating units that hammer away in shops and on service bodies. Both get the same approach as our other plant machinery work, which is to measure first and replace second.
What people call aboutPressure that will not climb to cutout, a unit tripping on thermal overload, oil in the discharge air, constant loading and unloading, or water coming out of every drop in the shop.
Cost, plainlyWhat it’ll cost before the truck leaves, and nothing added for showing up, because there is no hourly minimum on any call here.
Who callsBody and tire shops, wineries, food plants, fabrication shops and fleet yards across the North Bay, plus jobsite units that cannot leave the site. See the full coverage area.
A compressor that will not build pressure usually has a healthy pump
This is the most common assumption we get handed, and it is wrong more often than it is right. The pump is the expensive part, so it is the part people fear. But an air end or a piston assembly that is genuinely worn out announces itself in other ways first: oil consumption, noise, heat, and a slow decline rather than a sudden one. A unit that made full pressure last week and makes none today rarely wore out over a weekend.
What actually fails is the control side. On a rotary screw, the inlet valve and the unloader decide whether the machine is compressing or idling, and when a solenoid, a control line or a diaphragm fails, the compressor runs without loading. It sounds normal and produces nothing. On a reciprocating unit, discharge valves carbon up or crack, an unloader sticks open, or the head gasket lets air shuttle between stages, and the gauge tells the same story.
The way through it is to test rather than guess: verify the unit is actually loading, watch pressure build against time, check the control circuit, then look at the pump. That order costs an hour. Getting it backward costs a pump.
Compressor work we handle on site
Repair and maintenance overlap heavily here. Most of what breaks a compressor is something that stopped being serviced, so the fix and the prevention are frequently the same conversation.
Pressure faults
Unloaders, inlet valves, solenoids, control lines and pressure switches, tested in sequence instead of replaced in hope.
Valves and heads
On reciprocating units, discharge and intake valves, gaskets and rings. Carbon and heat are what usually did the damage.
Cooling and overheating
Coolers cleaned, fans and thermostats checked, oil condition and level verified, and an honest look at whether the room itself is the problem.
Separators, filters and oil
Oil carryover into the air usually starts at the separator element. Service intervals get set to the hours the machine actually runs.
Dryers and drains
Refrigerated dryers, automatic drains and moisture chasing through the piping, because water is a downstream problem that starts here.
Motors and electrical
Starters, contactors, overloads and wiring faults, shared with our industrial electrical work.
Water is the damage you do not see happening
Every compressor makes water. Air holds moisture, compressing it wrings that moisture out, and the warmer and more humid the day, the more of it ends up in your system. A working dryer and functioning drains send it out of the piping. When those stop doing their job, it goes everywhere else instead.
What it does downstream is expensive and gradual. Water rusts the inside of receivers and steel piping, and the rust scale it produces travels. It washes lubricant out of air tools so they wear early and hit hard. It ruins paint work by spitting into the gun at the worst moment. In a food or beverage plant it becomes a contamination question rather than a maintenance one. None of that shows up as a compressor fault, so the compressor keeps getting a clean bill of health while the shop quietly pays for it.
Fixing it means looking at the whole path and not just the box: whether the dryer is actually cooling, whether automatic drains are opening or have plugged solid, whether the receiver has been drained this year, and whether the piping gives condensate a place to collect and leave. That is usually a same-visit job and it pays for itself in tools alone.
A shop without air is losing money by the hour. That is a call worth answering at two in the morning, and we do.
Patrick Freeman, owner
What shops and plants ask
Not seeing your exact symptom? Call it in with the make and what the gauge is doing. Two minutes on the phone narrows it down faster than reading.
The compressor runs but pressure barely climbs. Is the pump finished?
Probably not. A worn pump declines slowly and gives you other warnings first, such as heat, noise and oil use. A sudden loss of pressure points at the control side: on a rotary screw, an inlet valve or unloader that is letting the machine run without loading, and on a reciprocating unit, discharge valves that have carboned up or cracked. We confirm whether it is actually loading before anyone talks about the air end.
Why is water coming out of the air lines?
Because every compressor produces condensate and something in the system has stopped removing it. The usual culprits are a refrigerated dryer that is no longer cooling, automatic drains that have plugged or failed, or a receiver nobody has drained in a long time. Humid weather makes all of it worse. It is worth fixing promptly, since that water rusts piping, strips lubricant out of air tools and wrecks paint work.
Can a compressor be repaired on site or does it have to be hauled in?
On site is the normal outcome. Valves, unloaders, solenoids, separators, filters, oil, coolers, drains, belts and most electrical faults are all field work. A unit bolted down with hard piping and three-phase power is not something anybody wants to move, and we are set up to avoid it. If an air end truly needs a bench rebuild, that gets discussed openly with the alternatives laid out.
It keeps tripping on thermal overload. What causes that?
Heat that has nowhere to go. Coolers packed with dust, a failed cooling fan, low or wrong oil, or a compressor room with no ventilation on a hot day will all do it. So will a duty cycle beyond what the unit was built for, where the machine simply never gets a chance to cool. We check all of it and tell you honestly if the real answer is that the unit is undersized for the work.
How often should a compressor actually be serviced?
By running hours, not by the calendar. A rotary screw working most of a shift and one that runs a few hours a week are years apart in wear even though the dates match. Oil, separators, filters and cooler cleaning all get tied to hours on the machine. If yours has no service history, we start by establishing where it currently stands rather than guessing at a schedule.
Will you come out after hours when the shop is already down?
Yes, and that is a big part of why this business exists. We run 24 hours a day, seven days a week, and a shop or plant with no air is not something that waits politely until morning. Call whenever it happens, describe the unit and what it is doing, and you will be told what the job runs before any work begins.
Tell us what the gauge is doing.
Make and model off the nameplate, screw or piston, and what changed: no pressure, too hot, cycling constantly, or water everywhere. That is enough for us to bring the right parts the first time.
HoursMonday to Sunday, 24 hours
Based inAmerican Canyon, CA
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