Does Rain Damage My HVAC System Over Time?

Can Rain Cause Air Conditioner Damage?

Tennessee homeowners found 2021 to be one of the wettest years on record. In May, the National Oceanic and Atmospheric Administration (NOAA) told Chattanooga residents to expect more of the same.

Your HVAC system represents a considerable investment. It's also a key factor in the value and comfort of your home. No doubt you’re wondering, “Does rain damage my HVAC system over time?”

Will All This Rain Affect My HVAC System?

In most home HVAC systems, condensing units and heat pumps stand outside on a concrete pad. These units remain exposed to the elements, including rain and snow.

Chattanooga averages over 52 inches of rainfall every year —14 inches more than the national average. So, many area homeowners may wonder, “Does rain damage my HVAC system over time?”

The short and happy answer is — usually not. Newer outdoor AC units easily withstand the elements. Delicate components remain sealed in watertight housings.

Any exposed parts will dry out quickly. In fact, rain helps cool the coils on an overworked AC unit. It also helps to prevent dirt buildup from affecting its efficiency.

When Can Rain Cause Air Conditioner Damage?

If your air conditioner stopped working after rain, it may be due to other factors. Power surges and lightning strikes can damage the electrical system.

Hailstorms also damage your outdoor AC unit. Hail can dent the housing and even destroy the fins on the unit fan.

Can Water Damage an AC Unit?

One source of real concern is flooding. High water levels can destroy your HVAC electrical system. Flooding water short circuits the electrical system and corrodes sensitive components in the system.

How Do I Protect My Outside AC Unit From Rain?

Power surges and lightning strikes can wreak havoc on your HVAC electrical system, so reduce the risk of damage to your HVAC system by turning it off during thunderstorms..

How Do I Protect My Outside AC Unit From Flooding?

To reduce the chance of damage to your HVAC system during a flood, turn your HVAC system off during a flood watch or flood warning. Also, sandbagging can reduce water infiltration during a flood. Check with your local emergency services to find sandbag distribution locations.

If water infiltrates either of your HVAC units, it’s critical to call an experienced professional to inspect them before turning them back on.

Make Your Storm Recovery Plan Now

If you suspect rain or snow has damaged your HVAC system, call the experts at One Hour Heating & Air Condition in Chattanooga. They can check for corrosion to the electrical system or possible damage to the fan.

If your outdoor AC unit has been flooded, make an appointment now. We can help you restore comfortable air quality to your home safely, without risking any further damage to your HVAC system.