When summer hits Cheyenne, there’s nothing better than walking into a cool, air-conditioned home after a hot day outside. But if your AC isn’t keeping up—or worse, blowing warm air—there’s a good chance the problem could be something simple but often overlooked: a dirty evaporator coil.

At Marv’s Plumbing & Heating, we see this issue all the time, especially during the peak of cooling season. Let’s break down what your AC coil does, what happens when it gets dirty, and why regular maintenance can save your summer (and your wallet).

❄️ What Is an AC Coil, and What Does It Do?

Your air conditioner has two main coils:

The evaporator coil, located inside your home, absorbs heat from the air.
The condenser coil, located in the outdoor unit, releases that heat outside.

When your AC is running, the evaporator coil pulls heat from the indoor air and cools it down as it passes through the system. That cooled air is then circulated throughout your home, keeping you comfortable.

But for this process to work efficiently, the coil needs to be clean and free of buildup.

🚫 What Happens When the Coil Gets Dirty?

Over time, the evaporator coil collects dust, pet hair, pollen, and other airborne particles. Even a thin layer of grime can interfere with the coil’s ability to absorb heat.

Here’s what that means for your home:

🌀 1. Reduced Cooling Efficiency

When your coil can’t do its job, your system has to work harder and run longer to cool your home. That means more wear and tear—and higher energy bills.

🔥 2. Warm Air from the Vents

If the coil is badly clogged, it might not cool the air at all. You’ll feel warm or room-temperature air coming from your vents, even though the AC is running.

🧊 3. Frozen Coils

A dirty coil can also cause the system to freeze up—literally. Ice can form on the coil, reducing airflow and potentially causing damage to the compressor. Once that happens, you’re looking at expensive repairs.

💸 4. Higher Utility Bills

The more your system strains to cool your home, the more energy it uses. That spike in your summer electric bill? A dirty coil might be to blame.

🛠️ 5. Shorter System Lifespan

All that extra strain adds up. Ignoring coil maintenance can significantly shorten the life of your air conditioning system.

🔧 How Do You Prevent This?

The best way to avoid dirty coil problems is simple: schedule routine AC maintenance.

During a professional tune-up, our techs at Marv’s Plumbing & Heating will:

Inspect and clean the evaporator and condenser coils
Check refrigerant levels
Ensure airflow is unrestricted
Identify any small issues before they become big ones

This kind of service keeps your system running efficiently and helps you avoid uncomfortable (and expensive) breakdowns during the hottest months of the year.

🌞 Stay Cool in Cheyenne—The Smart Way

Don’t let a dirty coil ruin your summer comfort. If your AC isn’t keeping up—or it’s been more than a year since your last maintenance—Contact Marv’s Plumbing & Heating.

We’ll get your system clean, tuned, and ready to beat the heat.

Book your AC tune-up today and stay cool all summer long!

How a Dirty AC Coil Can Ruin Your Summer Comfort