Frozen AC Coil Repair in Katy, TX

Ice on an air conditioner sounds counterintuitive, but a frozen evaporator coil is a common Katy summer problem—and it stops your system from cooling. If you’ve spotted ice on the indoor unit or refrigerant lines, the system needs attention before the freeze causes bigger damage. TemperaturePro Katy-Cypress diagnoses why your coil is freezing and fixes the root cause.

Here’s what causes frozen coils and how we resolve them.

What Causes a Frozen Evaporator Coil

• Restricted airflow – A dirty filter, closed vents, or duct problems starve the coil of warm return air, causing it to freeze.
• Low refrigerant – A leak drops system pressure, lowering coil temperature until ice forms.
• Dirty coil – Buildup insulates the coil and disrupts proper heat exchange.
• Blower problems – A failing blower motor reduces the airflow the coil needs.
• Running in cool weather – Operating the AC when it’s too cool outside can contribute to freezing.

What to Do—and What We Do

If you see ice, turn the AC off and switch the fan to “on” to help the coil thaw, and replace a dirty filter. Then call us—running a frozen system can damage the compressor. Our technicians find the underlying cause (airflow or refrigerant), repair it, and verify the system runs at the correct temperature and pressure. For related issues, see AC airflow problems and AC refrigerant leak repair.

Preventing Future Freeze-Ups

Regular filter changes and AC maintenance prevent most frozen-coil problems. Explore our full AC repair services. The U.S. Department of Energy explains AC airflow and efficiency.

Why Katy Homeowners Trust TemperaturePro

We fix the cause of the freeze, not just thaw the ice. Licensed, insured, and community-trusted across Katy, Cypress, and Greater Houston, with transparent pricing.