Reefer Airflow Problems Explained
Your reefer needs steady airflow in two places to work right: across the condenser coil outside, and through the evaporator and box inside. So what happens when either one is blocked?
Tell us your location, unit brand, set point and current reading — we load the truck before the tech leaves.
Condenser Airflow Problems
When the condenser coil is packed with dirt, bugs, or debris, the unit can't release heat properly. So what's the result? The compressor works harder, pressures climb, and the unit can shut down on a high pressure alarm even though nothing inside it is actually broken.
Evaporator Airflow Problems
Inside the box, a weak or failing evaporator fan means cold air doesn't circulate all the way to the back doors. So what does that look like? Uneven temperatures, with the front of the load reading fine and the back running warm, sometimes warm enough to fail a receiver's temperature check.
Blocked Airflow From the Load Itself
Freight stacked too tight against the walls or blocking the air chutes stops circulation just as effectively as a dirty coil or bad fan. So what's the fix? Leaving space for air to move around and through the load, not just on top of it.
What to Do About It
If you notice hot spots, longer than usual run times, or a high pressure alarm, airflow is one of the first things worth checking, since it's often cheaper and faster to fix than a refrigerant or compressor problem.
Call 972-703-4445 if you suspect an airflow issue with your reefer. We'll send a tech to check it out anywhere in Dallas-Fort Worth.
If this is happening right now
This guide explains the problem. These pages cover the repair itself.