Oil fouling — the cholesterol connection.
In every refrigeration and air conditioning system, a small amount of compressor oil travels with the refrigerant. Over time it coats the inner walls of the evaporator and condenser coils, acting as an insulating barrier that dramatically reduces heat transfer.
What is oil fouling?
Even a microscopic film of compressor oil between the refrigerant and the coil surface dramatically reduces efficiency. It builds up silently and continuously from the day a system is commissioned — and conventional service can't remove it.
Think of it like cholesterol.
The same way cholesterol restricts blood flow and forces the heart to work harder, oil fouling restricts heat flow and forces the compressor to work harder.
In the body
- Cholesterol builds up on artery walls, restricting blood flow.
- Heart pumps harder to circulate blood.
- Reduced oxygen supply stresses organs.
- Higher blood pressure, fatigue, long-term health problems.
In the HVAC system
- Oil coats coil surfaces, restricting heat flow.
- Compressor works harder to move refrigerant and cool.
- Reduced heat transfer stresses the compressor.
- Higher energy bills, reduced capacity, premature failure.
ACFlush works like a cleanse.
ACFlush removes the oil film from the coils, restoring bare metal contact and instant heat transfer — measurable within minutes of correct installation.
Removes the oil film
Strips the insulating coating from coil walls, restoring bare-metal contact.
Improves heat transfer
Measurable within minutes of correct installation — typically 2–8°C air-off improvement.
Reduces compressor load
Lowers energy use, runtime, and mechanical wear on the system's most expensive component.
Lasts the system's life
A one-time repair that keeps efficiency restored — not a recurring add-on.
Bottom line for contractors
Oil fouling is inevitable in every system — just like cholesterol build-up is in every human body. ACFlush is the tool to repair it, restore performance, and deliver lasting savings to your customers.