Spring is here, and that means warmer days are just around the corner. Before the heat really kicks in, many homeowners will be turning on their air conditioning systems for the first time in months. But what exactly should you expect when flipping that switch? Here are a few things to keep an eye and ear out for—and when to call in Mattex.

1. A Slight Musty Smell

It’s completely normal to notice a faint musty or dusty odor when you first turn your A/C on. This usually comes from dust that has settled on the coils or in the ductwork over the winter months. If the smell fades within 10–15 minutes, you're likely in the clear. However, if it persists or worsens, it could be a sign of mold or mildew and may require a professional cleaning.

2. A Short Delay Before Cooling

Your system may take a few minutes to begin blowing cold air, especially if it hasn’t been used since last fall. A little delay is normal—but if the air never gets cool or only feels mildly cool, it could point to a refrigerant issue, dirty filter, or even compressor trouble.

3. Unusual Noises

Hearing anything out of the ordinary? Banging, buzzing, or rattling sounds coming from your outdoor unit or vents can mean a variety of things—loose parts, debris in the fan blades, or a failing motor. These noises are not normal and should be checked out right away to prevent further damage.

4. Weak Airflow

If your system turns on but you’re not feeling strong airflow, it could be something as simple as a clogged air filter—which should be changed every 1–3 months during heavy use. If the filter is clean but airflow is still weak, the issue could lie within the ductwork or blower motor.

5. Moldy or Dirty Smells

Any kind of burning, moldy, or “dirty sock” smell coming from your vents could be a red flag. Mold buildup in the coils or ducts, clogged condensate drains, or burnt wiring may be to blame. If the odor doesn't clear up quickly, it’s best to schedule a professional inspection.

Final Thoughts

Your air conditioning system works hard all summer long—so give it the attention it deserves with a spring HVAC tune-up. Routine maintenance helps:

Improve energy efficiency
Extend the life of your system
Catch small issues before they become costly repairs
Keep your indoor air quality healthy and clean

If anything feels off—whether it's the air temperature, smells, or sounds—don’t wait. A quick check now could save you from a breakdown during the hottest day of the year.

Ready to schedule your spring A/C tune-up? Contact Mattex Heating, Cooling, Plumbing, Sewer, and Electrical today and stay cool with confidence!

What to Expect When You Turn on Your A/C for the First Time This Season