Our Blog

Maintenance guides, buying guides, and field notes from KCL

New articles every other week, covering door maintenance, coil replacement, merchandising, and HVAC, written from the field, not the brochure.


How Technicians Diagnose A/C Coil Problems

Before deciding to replace a coil, HVAC professionals use a series of checks to pinpoint the issue. Here’s how the process typically works: 1. Visual Inspection Technicians start by looking for telltale signs: Corrosion or pitting on coil surfaces Refrigerant oil...

read more

Got a question a blog post hasn’t answered yet?

Tell us what you’re working on and we’ll point you to the right guide, or the right person.