AC System Flush

Expert service in Atascadero · Honest diagnostics · Quality parts

Signs Your Vehicle Needs This Service

AC compressor that failed with grinding or seized internal components: any compressor that failed mechanically distributes metal particles throughout the system, requiring a flush before a new compressor is installed
Metal particles, debris, or discolored oil visible in the refrigerant recovered from the system, confirming the circuit has been contaminated
AC system that experienced a catastrophic refrigerant loss accompanied by a loud noise from the compressor, suggesting internal compressor damage
Previous AC repairs at another shop that included a compressor replacement without a documented system flush, and the new compressor has now also failed
Repeat AC compressor failures within a short time, which almost always indicate contamination in the system that was not removed before the replacement was installed

AC System Flush

Full System Refrigerant Recovery

We recover all refrigerant from the system and document the quantity and condition, noting any contamination, discoloration, or metal particles to establish the extent of contamination before flushing begins.

Condenser Flush

The condenser is one of the primary accumulation points for metal debris from a failed compressor. We flush the condenser with an approved solvent to remove particles, sludge, and old oil from the internal passages.

High-Side and Low-Side Line Flush

We flush all accessible refrigerant lines to remove contamination from the entire circuit between the compressor and the expansion device, working from the compressor end toward the evaporator.

Expansion Device Replacement

The expansion valve or orifice tube cannot be effectively flushed and traps debris from a compressor failure. We replace the expansion device as part of every AC system flush to ensure the new compressor's refrigerant delivery is unrestricted.

Post-Flush Assembly and Recharge

After flushing, we assemble the new compressor, install new o-rings and seals at all opened connections, pull a deep vacuum to remove moisture, and recharge with the manufacturer-specified refrigerant type and quantity.

What to Expect: Typical Service Times

System refrigerant recovery and contamination assessment: 30 to 45 minutes
Condenser and line flush: 1 to 2 hours
Expansion device replacement: 30 to 60 minutes
New compressor installation: 3 to 5 hours depending on vehicle
System vacuum and recharge: 45 to 90 minutes

How Our Technicians Approach an AC System Flush

When a compressor failure is confirmed and a replacement is planned, we begin by recovering all refrigerant and assessing the contamination level. We note whether the oil is black and contains metal particles, which confirms the contamination and guides the extent of flushing required.

We remove the condenser and flush it using an approved flushing solvent, blowing it clear and confirming the solvent runs clean before reassembly. We flush the high-side and low-side refrigerant lines using the same process, working from the compressor end toward the evaporator.

We replace the expansion device and all o-rings at every opened connection. We install the new compressor with the correct oil charge for the system. We pull a deep vacuum for a minimum of 30 minutes, confirm the vacuum holds, and recharge to the manufacturer-specified weight.

We perform a post-charge vent temperature test to confirm the new compressor is operating within its designed cooling capacity before returning the vehicle.

More A/C Services

Why Choose APS Automotive

Honest Diagnostics

We tell you exactly what's wrong and what it takes to fix it. Nothing more, nothing less. No upselling, no surprise charges.

Quality Parts & Warranty

We use only trusted brands and back our work with a solid warranty, giving you peace of mind long after you drive away.

Fast Turnaround

We know you need your vehicle. Our efficient workflow gets you back behind the wheel as quickly as possible without cutting corners.

ASE Certified Technicians

Our 2 ASE-certified technicians bring real expertise. We're also California-licensed smog technicians serving Atascadero since 1992.

Transparent Pricing

You'll receive a detailed estimate before we begin any work. We respect your budget and will never start without your approval.

Clear Communication

No confusing jargon. Just straightforward explanations of what your vehicle needs and why. We're educators, not salespeople.

Ready to Schedule Service?

Request an appointment. We're open Monday through Friday, 7:30am – 5:30pm.

(805) 461-5823

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