AC Smells in McMurray, PA

Why Does My AC Smell Funny in McMurray, PA?

May 11, 2025

If your AC system smells funny while it cools your McMurray, PA home, it’s usually an indicator that something’s going on inside your system. Let’s discuss some unusual odors your AC may give off and what they could potentially mean.

Musty AC Smells

If you notice a wet or musty smell when your AC runs, you most likely have biological growth inside your system. Moisture prevails during times of high humidity, creating an ideal environment for spores. When the AC cycles on, it can blow that odor right into your living areas.

Vinegar Odor

You may occasionally notice a sour or vinegary scent originating from your AC, which may mean that you have bacterial growth in your condensation pan. When the AC runs and cools the air, it also extracts excess moisture from that air, creating condensation. In many cases, a blocked drain line is the cause.

Burning

A burning odor from your AC system is a huge red flag, as it may signal an electrical issue, such as an overheating motor or fraying wires. If you notice this smell, shut off your system and get a reputable HVAC maintenance and repair technician to check it out. Allowing a burning smell to go unchecked can result in a major problem or even pose a fire risk.

A delay in resolving these issues can affect your health and your HVAC system. Call Bruno Plumbing & Heating for air conditioning repair in McMurray, PA.

Bruno Plumbing & Heating has been a family-owned and operated company since 1927. Our expert plumbers in Washington, PA, operate according to a strict code of ethics and our mission is to always provide our customers with the highest quality of customer care. We constantly strive to make a positive difference in the lives of home and business owners throughout our community.

Image provided by iStock

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