The seal on your windshield or door may be leaking. The water could run behind the trim and pool on the floor, leaving no obvious water trail.

It’s usually caused by an HVAC system component in the dashboard leaking into onto the floor on the passenger’s side. As it works to keep your car cool, the A/C system creates a lot of condensation. This condensation normally drips down the evaporator drain hose and onto the ground harmlessly as you drive.

Clogged Air Conditioning System Drain If it’s not the heater core leaking, another component that could potentially develop a leak is the A/C evaporator. Don’t get cold feet because your car’s leaking onto the passenger’s side floor mats!

In general there are several possible causes of water ingress to a foot well, from a damaged or deformed door seal to a blocked air-conditioning drain hose or damaged heat exchanger. If it’s a heater/air-conditioning fault then the carpet will become wet again in normal driving in dry weather.

Coolant may leak from a car for a number of reasons. The most common are: radiator corrosion; a damaged coolant hose; or a water pump with a leaky gasket. In the vast majority of cases, water leaking from under a vehicle is usually condensation from the air conditioning system, or from the exhaust.

If your floorboards have an inch or more of standing water, you’ll want to use a wet/dry vac to suck it out, taking particular care to get into the nooks and crannies between the seats, center console and armrests. Next, use shop towels to soak up any water from carpets and seats.

Because warm air loves moisture, the fastest way to take care of foggy windows is to turn your AC up and make your cabin colder than the outside environment. To clear away the fog faster, wipe your windshield surface with a clean, dry, and preferably lint-free cloth before turning up your AC.

DampRid Fragrance Free Moisture Absorber 4 lb. Hi-Capacity Bucket – For Fresher, Cleaner Air in Large SpacesDampRid Fragrance Free Moisture Absorber 4 lb. This was able to dry the carpet in my car after it got wet from rain. This was able to dry the carpet in my car after it got wet from rain.

DampRid crystals work immediately to absorb excess moisture from the air. The crystals harden and form a solid mass. Then they begin to dissolve and liquid will begin to drip into the bottom chamber. It may take a few days before liquid begins to drip.

The Best Dehumidifier for Cars: The Best Moisture Absorbers

Product description DampRid crystals absorb excess moisture to create and maintain the optimal humidity level wherever moisture is a problem. Each dehumidifying bag can last up to 60 days depending on the level of humidity and temperature. When the bag is finished, simply discard and replace.

While the active ingredient will need to be replaced every 45 days or so depending on your humidity levels, the container will likely last for several years.

(Moldoff.org) DampRid™ Mildew and Mold Blocker is readily available at hardware stores and home centers and works great on both hard and porous surfaces and will keep mildew and mold from coming back once cleaned (Damprid.com). For areas that will not or cannot be cleaned, then testing is a necessary step.

The active ingredient in DampRid, calcium chloride, is considered nontoxic and does not emit noxious gases or fumes. …

DampRid effectively works in rooms that have 60% air humidity or above, which makes it ideal for people living in humid areas. It is also great to put in the bathroom, kitchen and laundry room even if you are in a dry area of the world. These rooms get damp due to the nature of their use and can retain stale smells.