May 30, 2025
How a More Efficient AC Can Save You Up to 40% on Energy Bills
Learn how upgrading to a higher SEER-rated AC can cut your energy bills by up to 40% in Texas.
If your air conditioner is making strange noises, you’re not alone. A noisy AC unit can be more than just an annoyance—it can signal deeper problems that, if left unchecked, could lead to expensive repairs or a total system breakdown.
From banging and rattling to hissing and screeching, each sound tells a story. The key is learning how to listen and when to act. In this guide, we’ll walk you through the most common air conditioner noises, their likely causes, and what you can do about them.
Even if your unit is functioning properly, it might still be too loud for comfort. Here’s how to reduce AC noise indoors and outdoors:
A clogged filter restricts airflow, forcing your system to work harder and louder. Aim to replace it every 1–3 months.
Learn how to change it here.
Leaves, dirt, or sticks caught in the condenser can cause rattling or buzzing. Always power off the unit before cleaning.
Loose panels are a common culprit of vibrations and rattles. Hand-tighten all visible screws and fittings as part of regular maintenance.
An unbalanced base can cause vibration and excess noise. Ensure the unit sits flat, and use shims if needed.
Dry bearings can create screeching or grinding noises. While this is typically part of professional maintenance, it can sometimes be done manually with the right oil and instructions.
Sometimes, no DIY fix will cut it. Call in a professional if:
At Air Techs, our team can quickly diagnose and fix any noise-related AC issue. Whether it’s AC repair, duct cleaning, or setting up a maintenance plan, we’ve got you covered.
If everything checks out but your system is still louder than you’d prefer, here are a few ways to reduce the noise:
These specialized covers wrap around the compressor inside your outdoor unit and significantly reduce vibration and sound output.
Surround the unit with sound-absorbing fencing or a privacy wall (minimum 3 feet clearance). Use materials like composite or dense wood to dampen vibrations.
Plant thick shrubs or tall grasses near the unit to help block sound—but keep them trimmed to maintain airflow.
Your HVAC system isn’t just background equipment—it’s the heart of your home’s comfort. Strange noises might seem like small inconveniences now, but they’re often early warnings.
Ignoring them could lead to:
If you’re hearing anything unusual, don’t wait. Schedule a professional inspection or contact our team to fix the issue fast and restore your peace of mind.
