Abilene sits at the eastern edge of the open West Texas plains. When storm systems push eastward from the high desert — and they do, multiple times per year — the leading edge arrives as a wall of suspended dust that can reach 5,000 feet high and 100 miles wide. These events, called haboobs, carry fine caliche and gypsum particles from the Permian Basin formations that underlie the region. Caliche is a hardened calcium carbonate deposit — essentially limestone dust. When it infiltrates your home through every gap and crack, it reaches your appliances.

What Caliche Dust Does to Each Appliance

Refrigerator Condenser Coils

Condenser coils on the back or underside of your refrigerator dissipate heat from the refrigerant cycle. They require clear airflow to function properly. When caliche dust coats these coils — and it does, building up with every haboob — they lose heat dissipation efficiency. The compressor compensates by running longer and harder. We’ve measured coil dust buildup of 3/8 inch or more on refrigerators in Abilene homes that haven’t been cleaned since purchase. A compressor working 30–40% harder than its design rating, month after month through Abilene summers, fails years ahead of schedule.

Dryer Motor Bearings

Dryer motors and their shaft bearings are designed to operate in household air. Caliche particles — which are abrasive in addition to accumulating — infiltrate dryer motors through the cabinet gaps and settle in bearing assemblies. The fine abrasive particles function like a mild grinding compound over time, accelerating bearing wear. A dryer that might run 10–13 years nationally often shows early bearing wear at 6–8 years in Abilene homes that experience regular haboob events.

Gas Range Igniter Ports

Gas range igniters work by passing a spark through a small ceramic electrode, igniting gas that flows through small ports around the burner cap. Caliche dust accumulates in and around these igniter ports, interfering with both the spark path and gas flow. The result: clicking igniters that won’t light, uneven flame patterns, or complete ignition failure on one or more burners. This is one of the most common post-haboob service calls we receive, typically in the 24–72 hours after a major dust event passes through Abilene.

Microwave Convection Fans

Microwave convection and ventilation fans pull air through the unit to cool electronic components. Caliche dust accumulates on fan blades and in the filter, reducing airflow and causing components to run hotter than designed. Over time, this contributes to premature magnetron and control board failures.

After a Haboob — The Appliance Checklist

• Refrigerator: Pull the unit out and visually inspect the condenser coils. If you see visible dust coating, clean it now. Don’t wait — every day with coated coils in Abilene summer heat is stress on the compressor.
• Gas range: Check that all burners ignite cleanly. If any burner clicks repeatedly without lighting or produces an uneven flame, the igniter ports likely need cleaning.
• Dryer: Run a short cycle and listen for any new noise that wasn’t there before the storm. Unusual grinding or squealing after a haboob often indicates dust infiltration in the motor or bearing assembly.
• HVAC filter: While not an appliance, replace it immediately after a haboob — a clogged HVAC filter circulates that same caliche dust through your home continuously.

We see a predictable spike in service calls in the 1–3 days following any major haboob event across Abilene and the Taylor County area. If you notice your refrigerator running more than usual, your gas range igniter clicking longer than normal, or your dryer making sounds it didn’t make before — those are the signs. Call us before a manageable cleaning or minor repair becomes a major failure.